Annotation of loncom/xml/lonplot.pm, revision 1.162
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.162 ! foxr 4: # $Id: lonplot.pm,v 1.161 2012/07/17 09:54:48 foxr Exp $
1.1 matthew 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.35 matthew 28:
1.149 jms 29:
30:
31:
1.1 matthew 32: package Apache::lonplot;
1.10 matthew 33:
1.1 matthew 34: use strict;
1.89 matthew 35: use warnings FATAL=>'all';
36: no warnings 'uninitialized';
1.10 matthew 37: use Apache::File;
1.1 matthew 38: use Apache::response;
1.2 matthew 39: use Apache::lonxml;
1.20 matthew 40: use Apache::edit;
1.106 albertel 41: use Apache::lonnet;
1.113 www 42: use LONCAPA;
43:
1.10 matthew 44:
1.129 albertel 45: use vars qw/$weboutputformat $version/;
1.97 matthew 46:
1.109 foxr 47:
1.108 foxr 48:
1.33 harris41 49: BEGIN {
1.97 matthew 50: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
51: #
52: # Determine the version of GNUPLOT
53: $weboutputformat = 'gif';
1.129 albertel 54: my $versionstring = `gnuplot --version 2>/dev/null`;
55: ($version) = ($versionstring =~ /^gnuplot ([\d.]+)/);
56: if ($version >= 4) {
1.97 matthew 57: $weboutputformat = 'png';
58: }
1.108 foxr 59:
60: }
61:
1.1 matthew 62:
1.149 jms 63: =pod
64:
1.10 matthew 65: ##
66: ## Description of data structures:
67: ##
68: ## %plot %key %axis
69: ## --------------------------
70: ## height title color
71: ## width box xmin
72: ## bgcolor pos xmax
73: ## fgcolor ymin
74: ## transparent ymax
75: ## grid
76: ## border
77: ## font
1.19 matthew 78: ## align
1.10 matthew 79: ##
80: ## @labels: $labels[$i] = \%label
81: ## %label: text, xpos, ypos, justify
1.14 matthew 82: ##
1.10 matthew 83: ## @curves: $curves[$i] = \%curve
1.14 matthew 84: ## %curve: name, linestyle, ( function | data )
1.10 matthew 85: ##
86: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
87: ## [y1,y2,y3,y4] ]
88: ##
1.21 matthew 89:
90: ###################################################################
91: ## ##
92: ## Tests used in checking the validitity of input ##
93: ## ##
94: ###################################################################
1.29 matthew 95:
1.149 jms 96: =cut
97:
1.32 matthew 98: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
99: # is longer than this, it will be truncated.
100:
1.157 foxr 101: my %linetypes = # For png use these linetypes.
1.135 faziophi 102: (
103: solid => 1,
104: dashed => 0
105: );
1.157 foxr 106: my %ps_linetypes = # For ps the line types are different!
107: (
108: solid => 0,
109: dashed => 7
110: );
1.135 faziophi 111:
1.29 matthew 112: my %linestyles =
113: (
114: lines => 2, # Maybe this will be used in the future
115: linespoints => 2, # to check on whether or not they have
116: dots => 2, # supplied enough <data></data> fields
117: points => 2, # to use the given line style. But for
118: steps => 2, # now there are more important things
119: fsteps => 2, # for me to deal with.
120: histeps => 2,
1.34 matthew 121: errorbars => 3,
122: xerrorbars => [3,4],
123: yerrorbars => [3,4],
1.35 matthew 124: xyerrorbars => [4,6],
1.34 matthew 125: boxes => 3,
1.110 albertel 126: filledcurves => 2,
1.35 matthew 127: vector => 4
1.29 matthew 128: );
129:
1.11 matthew 130: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 131: my $real_test =
132: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.62 matthew 133: my $pos_real_test =
134: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
1.79 matthew 135: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
1.1 matthew 136: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 137: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.119 albertel 138: my $sml_test = sub {$_[0]=~/^(\d+|small|medium|large)$/};
1.29 matthew 139: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.67 matthew 140: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
1.21 matthew 141:
1.160 foxr 142: my $arrowhead_test = sub{$_[0]=~/^(nohead|head|heads| )+$/};
143: my $arrowstyle_test= sub{$_[0]=~/^(filled|empty|nofilled)+$/};
144: my $degree_test = sub{&$pos_real_test($_[0]) && ($_[0] <= 360.0)};
145:
1.21 matthew 146: ###################################################################
147: ## ##
148: ## Attribute metadata ##
149: ## ##
150: ###################################################################
1.47 matthew 151: my @gnuplot_edit_order =
1.123 albertel 152: qw/alttag bgcolor fgcolor height width texwidth fontface font texfont
153: transparent grid samples
154: border align plotcolor plottype gridtype lmargin rmargin
1.115 albertel 155: tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
1.110 albertel 156: pattern solid/;
1.101 matthew 157:
1.105 matthew 158: my $margin_choices = ['default',0..20];
1.48 matthew 159:
1.47 matthew 160: my %gnuplot_defaults =
1.1 matthew 161: (
1.64 matthew 162: alttag => {
163: default => 'dynamically generated plot',
164: test => $words_test,
1.120 albertel 165: description => 'Brief description of the plot',
1.64 matthew 166: edit_type => 'entry',
167: size => '40'
168: },
1.20 matthew 169: height => {
1.65 matthew 170: default => 300,
1.20 matthew 171: test => $int_test,
1.120 albertel 172: description => 'Height of image (pixels)',
1.38 matthew 173: edit_type => 'entry',
174: size => '10'
1.20 matthew 175: },
176: width => {
1.65 matthew 177: default => 400,
1.20 matthew 178: test => $int_test,
1.120 albertel 179: description => 'Width of image (pixels)',
1.38 matthew 180: edit_type => 'entry',
181: size => '10'
1.20 matthew 182: },
183: bgcolor => {
184: default => 'xffffff',
185: test => $color_test,
1.120 albertel 186: description => 'Background color of image (xffffff)',
1.38 matthew 187: edit_type => 'entry',
1.154 foxr 188: size => '10',
189: class => 'colorchooser'
1.20 matthew 190: },
191: fgcolor => {
192: default => 'x000000',
193: test => $color_test,
1.120 albertel 194: description => 'Foreground color of image (x000000)',
1.38 matthew 195: edit_type => 'entry',
1.154 foxr 196: size => '10',
197: class => 'colorchooser'
1.20 matthew 198: },
199: transparent => {
200: default => 'off',
201: test => $onoff_test,
1.34 matthew 202: description => 'Transparent image',
1.45 matthew 203: edit_type => 'onoff'
1.20 matthew 204: },
205: grid => {
1.65 matthew 206: default => 'on',
1.20 matthew 207: test => $onoff_test,
1.34 matthew 208: description => 'Display grid',
1.45 matthew 209: edit_type => 'onoff'
1.20 matthew 210: },
1.110 albertel 211: gridlayer => {
212: default => 'off',
213: test => $onoff_test,
214: description => 'Display grid front layer over filled boxes or filled curves',
215: edit_type => 'onoff'
216: },
217: box_border => {
218: default => 'noborder',
219: test => sub {$_[0]=~/^(noborder|border)$/},
220: description => 'Draw border for boxes',
221: edit_type => 'choice',
222: choices => ['border','noborder']
223: },
1.20 matthew 224: border => {
225: default => 'on',
226: test => $onoff_test,
1.34 matthew 227: description => 'Draw border around plot',
1.45 matthew 228: edit_type => 'onoff'
1.20 matthew 229: },
230: font => {
1.119 albertel 231: default => '9',
1.20 matthew 232: test => $sml_test,
1.125 albertel 233: description => 'Font size to use in web output (pts)',
1.20 matthew 234: edit_type => 'choice',
1.126 albertel 235: choices => [['5','5 (small)'],'6','7','8',['9','9 (medium)'],'10',['11','11 (large)'],'12','15']
1.20 matthew 236: },
1.120 albertel 237: fontface => {
238: default => 'sans-serif',
239: test => sub {$_[0]=~/^(sans-serif|serif|classic)$/},
240: description => 'Type of font to use',
241: edit_type => 'choice',
242: choices => ['sans-serif','serif', 'classic']
243: },
1.110 albertel 244: samples => {
1.77 matthew 245: default => '100',
246: test => $int_test,
247: description => 'Number of samples for non-data plots',
248: edit_type => 'choice',
249: choices => ['100','200','500','1000','2000','5000']
250: },
1.20 matthew 251: align => {
1.116 albertel 252: default => 'middle',
253: test => sub {$_[0]=~/^(left|right|middle|center)$/},
1.120 albertel 254: description => 'Alignment for image in HTML',
1.20 matthew 255: edit_type => 'choice',
1.116 albertel 256: choices => ['left','right','middle']
1.82 matthew 257: },
258: texwidth => {
259: default => '93',
260: test => $int_test,
261: description => 'Width of plot when printed (mm)',
262: edit_type => 'entry',
263: size => '5'
264: },
1.110 albertel 265: texfont => {
1.92 matthew 266: default => '22',
267: test => $int_test,
268: description => 'Font size to use in TeX output (pts):',
269: edit_type => 'choice',
1.96 matthew 270: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
1.92 matthew 271: },
1.110 albertel 272: plotcolor => {
1.105 matthew 273: default => 'monochrome',
274: test => sub {$_[0]=~/^(monochrome|color|colour)$/},
275: description => 'Color setting for printing:',
276: edit_type => 'choice',
277: choices => [qw/monochrome color colour/],
278: },
1.110 albertel 279: pattern => {
280: default => '',
281: test => $int_test,
1.120 albertel 282: description => 'Pattern value for boxes:',
1.110 albertel 283: edit_type => 'choice',
284: choices => [0,1,2,3,4,5,6]
285: },
286: solid => {
287: default => 0,
288: test => $real_test,
289: description => 'The density of fill style for boxes',
290: edit_type => 'entry',
291: size => '5'
292: },
293: fillstyle => {
294: default => 'empty',
295: test => sub {$_[0]=~/^(empty|solid|pattern)$/},
296: description => 'Filled style for boxes:',
297: edit_type => 'choice',
298: choices => ['empty','solid','pattern']
299: },
300: plottype => {
1.87 matthew 301: default => 'Cartesian',
302: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
303: description => 'Plot type:',
304: edit_type => 'choice',
1.94 matthew 305: choices => ['Cartesian','Polar']
1.87 matthew 306: },
1.115 albertel 307: gridtype => {
308: default => 'Cartesian',
1.118 albertel 309: test => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
1.115 albertel 310: description => 'Grid type:',
311: edit_type => 'choice',
1.118 albertel 312: choices => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
1.115 albertel 313: },
1.110 albertel 314: lmargin => {
1.101 matthew 315: default => 'default',
316: test => sub {$_[0]=~/^(default|\d+)$/},
317: description => 'Left margin width (pts):',
318: edit_type => 'choice',
319: choices => $margin_choices,
320: },
1.110 albertel 321: rmargin => {
1.101 matthew 322: default => 'default',
323: test => sub {$_[0]=~/^(default|\d+)$/},
324: description => 'Right margin width (pts):',
325: edit_type => 'choice',
326: choices => $margin_choices,
327: },
1.110 albertel 328: tmargin => {
1.101 matthew 329: default => 'default',
330: test => sub {$_[0]=~/^(default|\d+)$/},
331: description => 'Top margin width (pts):',
332: edit_type => 'choice',
333: choices => $margin_choices,
334: },
1.110 albertel 335: bmargin => {
1.101 matthew 336: default => 'default',
337: test => sub {$_[0]=~/^(default|\d+)$/},
1.104 www 338: description => 'Bottom margin width (pts):',
1.101 matthew 339: edit_type => 'choice',
340: choices => $margin_choices,
341: },
1.110 albertel 342: boxwidth => {
343: default => '',
344: test => $real_test,
1.120 albertel 345: description => 'Width of boxes, default is auto',
1.110 albertel 346: edit_type => 'entry',
347: size => '5'
348: },
1.101 matthew 349: major_ticscale => {
350: default => '1',
351: test => $real_test,
352: description => 'Size of major tic marks (plot coordinates)',
353: edit_type => 'entry',
354: size => '5'
355: },
356: minor_ticscale => {
357: default => '0.5',
358: test => $real_test,
359: description => 'Size of minor tic mark (plot coordinates)',
360: edit_type => 'entry',
361: size => '5'
362: },
1.1 matthew 363: );
364:
365: my %key_defaults =
366: (
1.20 matthew 367: title => {
368: default => '',
369: test => $words_test,
370: description => 'Title of key',
1.38 matthew 371: edit_type => 'entry',
372: size => '40'
1.20 matthew 373: },
374: box => {
375: default => 'off',
376: test => $onoff_test,
377: description => 'Draw a box around the key?',
1.45 matthew 378: edit_type => 'onoff'
1.20 matthew 379: },
380: pos => {
381: default => 'top right',
382: test => $key_pos_test,
1.120 albertel 383: description => 'Position of the key on the plot',
1.20 matthew 384: edit_type => 'choice',
385: choices => ['top left','top right','bottom left','bottom right',
386: 'outside','below']
387: }
1.1 matthew 388: );
389:
390: my %label_defaults =
391: (
1.20 matthew 392: xpos => {
393: default => 0,
394: test => $real_test,
1.120 albertel 395: description => 'X position of label (graph coordinates)',
1.38 matthew 396: edit_type => 'entry',
397: size => '10'
1.20 matthew 398: },
399: ypos => {
400: default => 0,
401: test => $real_test,
1.120 albertel 402: description => 'Y position of label (graph coordinates)',
1.38 matthew 403: edit_type => 'entry',
404: size => '10'
1.20 matthew 405: },
406: justify => {
407: default => 'left',
408: test => sub {$_[0]=~/^(left|right|center)$/},
409: description => 'justification of the label text on the plot',
410: edit_type => 'choice',
411: choices => ['left','right','center']
1.134 raeburn 412: },
413: rotate => {
414: default => 0,
415: test => $real_test,
416: description => 'Rotation of label (degrees)',
417: edit_type => 'entry',
418: size => '10',
1.20 matthew 419: }
1.1 matthew 420: );
421:
1.89 matthew 422: my @tic_edit_order = ('location','mirror','start','increment','end',
423: 'minorfreq');
1.45 matthew 424: my %tic_defaults =
425: (
426: location => {
427: default => 'border',
428: test => sub {$_[0]=~/^(border|axis)$/},
1.90 matthew 429: description => 'Location of major tic marks',
1.45 matthew 430: edit_type => 'choice',
431: choices => ['border','axis']
432: },
433: mirror => {
434: default => 'on',
435: test => $onoff_test,
1.120 albertel 436: description => 'Mirror tics on opposite axis?',
1.45 matthew 437: edit_type => 'onoff'
438: },
439: start => {
440: default => '-10.0',
441: test => $real_test,
1.90 matthew 442: description => 'Start major tics at',
1.45 matthew 443: edit_type => 'entry',
444: size => '10'
445: },
446: increment => {
447: default => '1.0',
448: test => $real_test,
1.90 matthew 449: description => 'Place a major tic every',
1.45 matthew 450: edit_type => 'entry',
451: size => '10'
452: },
453: end => {
454: default => ' 10.0',
455: test => $real_test,
1.90 matthew 456: description => 'Stop major tics at ',
1.45 matthew 457: edit_type => 'entry',
458: size => '10'
459: },
1.89 matthew 460: minorfreq => {
461: default => '0',
462: test => $int_test,
1.98 matthew 463: description => 'Number of minor tics per major tic mark',
1.89 matthew 464: edit_type => 'entry',
465: size => '10'
466: },
1.45 matthew 467: );
468:
1.152 faziophi 469: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat', 'xzero', 'yzero');
1.1 matthew 470: my %axis_defaults =
471: (
1.28 matthew 472: color => {
1.20 matthew 473: default => 'x000000',
474: test => $color_test,
1.120 albertel 475: description => 'Color of grid lines (x000000)',
1.38 matthew 476: edit_type => 'entry',
1.154 foxr 477: size => '10',
478: class => 'colorchooser'
1.20 matthew 479: },
480: xmin => {
481: default => '-10.0',
482: test => $real_test,
1.120 albertel 483: description => 'Minimum x-value shown in plot',
1.38 matthew 484: edit_type => 'entry',
485: size => '10'
1.20 matthew 486: },
487: xmax => {
488: default => ' 10.0',
489: test => $real_test,
1.120 albertel 490: description => 'Maximum x-value shown in plot',
1.38 matthew 491: edit_type => 'entry',
492: size => '10'
1.20 matthew 493: },
494: ymin => {
495: default => '-10.0',
496: test => $real_test,
1.120 albertel 497: description => 'Minimum y-value shown in plot',
1.38 matthew 498: edit_type => 'entry',
499: size => '10'
1.20 matthew 500: },
501: ymax => {
502: default => ' 10.0',
503: test => $real_test,
1.120 albertel 504: description => 'Maximum y-value shown in plot',
1.38 matthew 505: edit_type => 'entry',
506: size => '10'
1.132 albertel 507: },
508: xformat => {
509: default => 'on',
510: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
511: description => 'X-axis number formatting',
512: edit_type => 'choice',
513: choices => ['on', 'off', '2e', '2f'],
514: },
515: yformat => {
516: default => 'on',
517: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
1.151 raeburn 518: description => 'Y-axis number formatting',
1.132 albertel 519: edit_type => 'choice',
520: choices => ['on', 'off', '2e', '2f'],
521: },
1.152 faziophi 522:
523: xzero => {
524: default => 'off',
525: test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
526: description => 'Show x-zero (y=0) axis',
527: edit_type => 'choice',
528: choices => ['off', 'line', 'thick-line', 'dotted'],
529: },
530:
531: yzero => {
532: default => 'off',
533: test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
534: description => 'Show y-zero (x=0) axis',
535: edit_type => 'choice',
536: choices => ['off', 'line', 'thick-line', 'dotted'],
537: },
1.1 matthew 538: );
539:
1.160 foxr 540: my @curve_edit_order = ('color','name','linestyle','linewidth','linetype',
541: 'pointtype','pointsize','limit', 'arrowhead', 'arrowstyle',
542: 'arrowlength', 'arrowangle', 'arrowbackangle'
543: );
1.60 matthew 544:
1.1 matthew 545: my %curve_defaults =
546: (
1.20 matthew 547: color => {
548: default => 'x000000',
549: test => $color_test,
1.120 albertel 550: description => 'Color of curve (x000000)',
1.38 matthew 551: edit_type => 'entry',
1.154 foxr 552: size => '10',
553: class => 'colorchooser'
1.20 matthew 554: },
555: name => {
556: default => '',
557: test => $words_test,
1.120 albertel 558: description => 'Name of curve to appear in key',
1.38 matthew 559: edit_type => 'entry',
560: size => '20'
1.20 matthew 561: },
562: linestyle => {
563: default => 'lines',
564: test => $linestyle_test,
1.135 faziophi 565: description => 'Plot with:',
1.20 matthew 566: edit_type => 'choice',
1.38 matthew 567: choices => [keys(%linestyles)]
1.60 matthew 568: },
1.119 albertel 569: linewidth => {
1.130 albertel 570: default => 1,
1.119 albertel 571: test => $int_test,
1.135 faziophi 572: description => 'Line width (may not apply to all plot styles)',
1.119 albertel 573: edit_type => 'choice',
574: choices => [1,2,3,4,5,6,7,8,9,10]
575: },
1.135 faziophi 576: linetype => {
577: default => 'solid',
578: test => sub {$_[0]=~/^(solid|dashed)$/},
579: description => 'Line type (may not apply to all plot styles)',
580: edit_type => 'choice',
581: choices => ['solid', 'dashed']
582: },
1.60 matthew 583: pointsize => {
584: default => 1,
1.62 matthew 585: test => $pos_real_test,
1.135 faziophi 586: description => 'Point size (may not apply to all plot styles)',
1.62 matthew 587: edit_type => 'entry',
588: size => '5'
589: },
590: pointtype => {
591: default => 1,
1.60 matthew 592: test => $int_test,
1.135 faziophi 593: description => 'Point type (may not apply to all plot styles)',
1.60 matthew 594: edit_type => 'choice',
1.62 matthew 595: choices => [0,1,2,3,4,5,6]
1.110 albertel 596: },
597: limit => {
598: default => 'closed',
1.135 faziophi 599: test => sub {$_[0]=~/^(above|below|closed|x1|x2|y1|y2)$/},
1.120 albertel 600: description => 'Point to fill -- for filledcurves',
1.110 albertel 601: edit_type => 'choice',
1.135 faziophi 602: choices => ['above', 'below', 'closed','x1','x2','y1','y2']
1.110 albertel 603: },
1.160 foxr 604: arrowhead => {
605: default => 'head',
606: test => $arrowhead_test,
607: description => 'Vector arrow head type',
608: edit_type => 'choice',
609: choices => ['nohead', 'head', 'heads']
610: },
611: arrowstyle => {
612: default => 'filled',
613: test => $arrowstyle_test,
614: description => 'Vector arrow head style',
615: edit_type => 'choice',
616: choices => ['filled', 'empty', 'nofilled']
617: },
618: arrowlength => {
619: default => 0.02,
620: test => $pos_real_test,
621: description => "Length of vector arrow (only applies to vector plots)",
622: edit_type => 'entry',
623: size => '5'
624: },
625: arrowangle => {
626: default => 10.0,
627: test => $degree_test,
628: description => 'Angle of arrow branches to arrow body (only applies to vector plots)',
629: edit_type => 'entry',
630: size => '5'
631: },
632:
633: arrowbackangle => {
634: default => 90.0,
635: test => $degree_test,
636: descripton => 'Angle of arrow back lines to branches.',
637: edit_type => 'entry',
638: size => '5'
639: }
640:
1.1 matthew 641: );
642:
1.21 matthew 643: ###################################################################
644: ## ##
645: ## parsing and edit rendering ##
646: ## ##
647: ###################################################################
1.107 foxr 648:
649: undef %Apache::lonplot::plot;
650: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 651:
1.47 matthew 652: sub start_gnuplot {
1.107 foxr 653: undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
1.89 matthew 654: undef($title); undef($xlabel); undef($ylabel);
655: undef(@labels); undef(@curves);
656: undef(%xtics); undef(%ytics);
1.6 matthew 657: #
1.1 matthew 658: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
659: my $result='';
1.25 matthew 660: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 661: ('title','xlabel','ylabel','key','axis','label','curve',
662: 'xtics','ytics'));
1.29 matthew 663: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 664: if ($target eq 'web' || $target eq 'tex') {
1.107 foxr 665: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 666: $tagstack->[-1]);
1.20 matthew 667: } elsif ($target eq 'edit') {
1.47 matthew 668: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
669: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
1.116 albertel 670: \@gnuplot_edit_order)
671: .&Apache::edit::end_row()
672: .&Apache::edit::start_spanning_row();
1.20 matthew 673: } elsif ($target eq 'modified') {
674: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 675: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.155 foxr 676:
1.20 matthew 677: if ($constructtag) {
1.155 foxr 678: #
679: # The color chooser does not prepent x to the color values
680: # Do that here:
681: #
682: foreach my $attribute ('bgcolor', 'fgcolor') {
683: my $value = $token->[2]{$attribute};
684: if (defined $value && !($value =~ /^x/)) {
685: $token->[2]{$attribute} = 'x' . $value;
686: }
687: }
1.20 matthew 688: $result = &Apache::edit::rebuild_tag($token);
689: }
1.4 matthew 690: }
1.21 matthew 691: return $result;
1.1 matthew 692: }
693:
1.47 matthew 694: sub end_gnuplot {
1.1 matthew 695: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
696: pop @Apache::lonxml::namespace;
1.4 matthew 697: &Apache::lonxml::deregister('Apache::lonplot',
698: ('title','xlabel','ylabel','key','axis','label','curve'));
699: my $result = '';
1.56 albertel 700: my $randnumber;
1.153 foxr 701: my $tmpdir =LONCAPA::tempdir(); # Where temporary files live:
702:
1.56 albertel 703: # need to call rand everytime start_script would evaluate, as the
704: # safe space rand number generator and the global rand generator
1.95 www 705: # are not separate
1.56 albertel 706: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
707: $target eq 'answer') {
708: $randnumber=int(rand(1000));
709: }
1.51 matthew 710: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 711: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 712: ##
713: ## Determine filename
1.106 albertel 714: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
1.69 matthew 715: '_'.time.'_'.$$.$randnumber.'_plot';
1.4 matthew 716: ## Write the plot description to the file
1.51 matthew 717: &write_gnuplot_file($tmpdir,$filename,$target);
1.113 www 718: $filename = &escape($filename);
1.4 matthew 719: ## return image tag for the plot
1.51 matthew 720: if ($target eq 'web') {
721: $result .= <<"ENDIMAGE";
1.114 albertel 722: <img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data"
1.107 foxr 723: width = "$Apache::lonplot::plot{'width'}"
724: height = "$Apache::lonplot::plot{'height'}"
725: align = "$Apache::lonplot::plot{'align'}"
726: alt = "$Apache::lonplot::plot{'alttag'}" />
1.12 matthew 727: ENDIMAGE
1.51 matthew 728: } elsif ($target eq 'tex') {
1.107 foxr 729: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
730: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
1.91 albertel 731: #might be inside the safe space, register the URL for later
732: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
1.111 albertel 733: $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
1.153 foxr 734: $result .= '\graphicspath{{'.$tmpdir.'}}'."\n";
1.113 www 735: $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
1.51 matthew 736: }
1.20 matthew 737: } elsif ($target eq 'edit') {
1.21 matthew 738: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 739: }
1.1 matthew 740: return $result;
741: }
1.2 matthew 742:
1.45 matthew 743:
744: ##--------------------------------------------------------------- xtics
745: sub start_xtics {
746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
747: my $result='';
1.51 matthew 748: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 749: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
750: $tagstack->[-1]);
751: } elsif ($target eq 'edit') {
752: $result .= &Apache::edit::tag_start($target,$token,'xtics');
753: $result .= &edit_attributes($target,$token,\%tic_defaults,
754: \@tic_edit_order);
755: } elsif ($target eq 'modified') {
756: my $constructtag=&Apache::edit::get_new_args
757: ($token,$parstack,$safeeval,keys(%tic_defaults));
758: if ($constructtag) {
759: $result = &Apache::edit::rebuild_tag($token);
760: }
761: }
762: return $result;
763: }
764:
765: sub end_xtics {
766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
767: my $result = '';
1.51 matthew 768: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 769: } elsif ($target eq 'edit') {
770: $result.=&Apache::edit::tag_end($target,$token);
771: }
772: return $result;
773: }
774:
775: ##--------------------------------------------------------------- ytics
776: sub start_ytics {
777: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
778: my $result='';
1.51 matthew 779: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 780: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
781: $tagstack->[-1]);
782: } elsif ($target eq 'edit') {
783: $result .= &Apache::edit::tag_start($target,$token,'ytics');
784: $result .= &edit_attributes($target,$token,\%tic_defaults,
785: \@tic_edit_order);
786: } elsif ($target eq 'modified') {
787: my $constructtag=&Apache::edit::get_new_args
788: ($token,$parstack,$safeeval,keys(%tic_defaults));
789: if ($constructtag) {
790: $result = &Apache::edit::rebuild_tag($token);
791: }
792: }
793: return $result;
794: }
795:
796: sub end_ytics {
797: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
798: my $result = '';
1.51 matthew 799: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 800: } elsif ($target eq 'edit') {
801: $result.=&Apache::edit::tag_end($target,$token);
802: }
803: return $result;
804: }
805:
1.119 albertel 806: ##-----------------------------------------------------------------font
1.120 albertel 807: my %font_properties =
808: (
809: 'classic' => {
810: face => 'classic',
811: file => 'DejaVuSansMono-Bold',
812: printname => 'Helvetica',
1.121 albertel 813: tex_no_file => 1,
1.120 albertel 814: },
815: 'sans-serif' => {
816: face => 'sans-serif',
817: file => 'DejaVuSans',
818: printname => 'DejaVuSans',
819: },
820: 'serif' => {
821: face => 'serif',
822: file => 'DejaVuSerif',
823: printname => 'DejaVuSerif',
824: },
825: );
826:
1.119 albertel 827: sub get_font {
1.124 albertel 828: my ($target) = @_;
1.120 albertel 829: my ($size, $selected_font);
830:
1.119 albertel 831: if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) {
1.120 albertel 832: $selected_font = $font_properties{'classic'};
1.119 albertel 833: if ( $Apache::lonplot::plot{'font'} eq 'small') {
834: $size = '5';
835: } elsif ( $Apache::lonplot::plot{'font'} eq 'medium') {
836: $size = '9';
837: } elsif ( $Apache::lonplot::plot{'font'} eq 'large') {
1.126 albertel 838: $size = '11';
1.119 albertel 839: } else {
840: $size = '9';
841: }
842: } else {
1.122 albertel 843: $size = $Apache::lonplot::plot{'font'};
1.120 albertel 844: $selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}};
1.119 albertel 845: }
1.124 albertel 846: if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) {
1.146 foxr 847: # $selected_font = $font_properties{'classic'};
1.124 albertel 848: $size = $Apache::lonplot::plot{'texfont'};
849: }
1.120 albertel 850: return ($size, $selected_font);
1.119 albertel 851: }
1.45 matthew 852:
1.1 matthew 853: ##----------------------------------------------------------------- key
854: sub start_key {
855: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
856: my $result='';
1.51 matthew 857: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 858: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 859: $tagstack->[-1]);
1.20 matthew 860: } elsif ($target eq 'edit') {
1.25 matthew 861: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 862: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 863: } elsif ($target eq 'modified') {
864: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 865: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 866: if ($constructtag) {
867: $result = &Apache::edit::rebuild_tag($token);
868: }
1.4 matthew 869: }
1.1 matthew 870: return $result;
871: }
872:
873: sub end_key {
874: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
875: my $result = '';
1.51 matthew 876: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 877: } elsif ($target eq 'edit') {
1.21 matthew 878: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 879: }
1.1 matthew 880: return $result;
881: }
1.21 matthew 882:
1.128 albertel 883: sub parse_label {
884: my ($target,$text) = @_;
885: my $parser=HTML::LCParser->new(\$text);
886: my $result;
887: while (my $token=$parser->get_token) {
888: if ($token->[0] eq 'S') {
889: if ($token->[1] eq 'sub') {
890: $result .= '_{';
891: } elsif ($token->[1] eq 'sup') {
892: $result .= '^{';
893: } else {
894: $result .= $token->[4];
895: }
896: } elsif ($token->[0] eq 'E') {
897: if ($token->[1] eq 'sub'
898: || $token->[1] eq 'sup') {
899: $result .= '}';
900: } else {
901: $result .= $token->[2];
902: }
903: } elsif ($token->[0] eq 'T') {
904: $result .= &replace_entities($target,$token->[1]);
905: }
906: }
907: return $result;
908: }
909:
1.143 foxr 910: #
911: # Note that there are severe restrictions on font selection in the
912: # ps driver now. later in life Gnuplot is supposed to support
913: # utf-8 fonts in the posts script driver. When this happens,
914: # the tex entries with comments that include the word <FIX>
915: # should be changed to print the correct glyphs rather than some
916: # approximation or fallback of what is intended.
1.128 albertel 917:
918: my %lookup =
1.137 foxr 919: ( # Greek alphabet:
1.139 foxr 920:
921: '(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
922: '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
923: '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
924: '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
925: '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
926: '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
927: '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
928: '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
929: '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
930: '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
931: '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
932: '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
933: '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
934: '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
935: '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
936: '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
937: '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
938: '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
939: '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
940: '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
941: '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
942: '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
943: '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
944: '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
945: '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
946: '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
947: '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
948: '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
949: '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
950: '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
951: '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
952: '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
953: '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
954: '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
955: '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
956: '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
957: '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
958: '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
959: '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
960: '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
961: '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
962: '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
963: '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
964: '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
965: '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
966: '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
967: '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
968: '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
969: '(thetasym|#977)' => {'tex' => '{/Symbol \165}', 'web' => "\x{3d1}"},
970: '(upsih|#978)' => {'tex' => '{/Symbol \241}', 'web' => "\x{3d2}"},
971: '(piv|#982)' => {'tex' => '{/Symbol \166}', 'web' => "\x{3d6}"},
1.137 foxr 972:
973:
974: # Punctuation:
975:
1.138 foxr 976: '(quot|#034)' => {'tex' => '\42', 'web' => '\42'},
977: '(amp|#038)' => {'tex' => '\46', 'web' => '\46'},
978: '(lt|#060)' => {'tex' => '\74', 'web' => '\74'},
979: '(gt|#062)' => {'tex' => '\76', 'web' => '\76'},
1.137 foxr 980: '#131' => {'tex' => '{/Symbol \246}', 'web' => "\x{192}"},
1.138 foxr 981: '#132' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"},
982: '#133' => {'tex' => '{/Symbol \274}', 'web'=> "\x{2026}"},
983: '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"},
984: '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"},
985: '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'},
1.143 foxr 986: '#137' => {'tex' => '%o', 'web' => "\x{2030}"}, # Per Mille <FIX>
987: '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # S-Caron <FIX>
1.138 foxr 988: '#139' => {'tex' => '<', 'web' => '<'},
1.143 foxr 989: '#140' => {'tex' => 'AE', 'web' => "\x{152}"}, # AE ligature <FIX>
1.138 foxr 990: '#145' => {'tex' => '\140', 'web' => "\x{2018}"},
991: '#146' => {'tex' => '\47', 'web' => "\x{2019}"},
1.143 foxr 992: '#147' => {'tex' => '\140\140', 'web' => "\x{201c}"}, # Left " <FIX>
993: '#148' => {'tex' => '\47\47', 'web' => '\\"'}, # Right " <FIX>
1.138 foxr 994: '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"},
1.143 foxr 995: '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash
1.138 foxr 996: '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash
1.143 foxr 997: '#152' => {'tex' => '\\\\~', 'web' => '\\\\~'},
998: '#153' => {'tex' => '{/Symbol \324}', 'web' => "\x{2122}"}, # trademark
1.139 foxr 999:
1000: # Accented letters, and other furreign language glyphs.
1001:
1.138 foxr 1002: '#154' => {'tex' => 's', 'web' => "\x{161}"}, # small s-caron no ps.
1003: '#155' => {'tex' => '>', 'web' => '\76'}, # >
1.143 foxr 1004: '#156' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.<FIX>
1005: '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print <FIX>
1.138 foxr 1006: '(nbsp|#160)' => {'tex' => ' ', 'web' => ' '}, # non breaking space.
1007: '(iexcl|#161)' => {'tex' => '{/Text \241}', 'web' => "\x{a1}"}, # inverted !
1008: '(cent|#162)' => {'tex' => '{/Text \242}', 'web' => "\x{a2}"}, # Cent currency.
1.142 foxr 1009: '(pound|#163)' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency.
1.143 foxr 1010: '(curren|#164)' => {'tex' => '{/ZapfDingbats \161}','web' => "\x{a4}"}, # Generic currency symb. <FIX>
1.138 foxr 1011: '(yen|#165)' => {'tex' => '{/Text \245}', 'web' => "\x{a5}"}, # Yen currency.
1012: '(brvbar|#166)' => {'tex' => '{/Symbol \174}', 'web' => "\x{a6}"}, # Broken vert bar no print.
1013: '(sect|#167)' => {'tex' => '{\247}', 'web' => "\x{a7}"}, # Section symbol.
1014: '(uml|#168)' => {'tex' => '{\250}', 'web' => "\x{a8}"}, # 'naked' umlaut.
1015: '(copy|#169)' => {'tex' => '{/Symbol \343}', 'web' => "\x{a9}"}, # Copyright symbol.
1016: '(ordf|#170)' => {'tex' => '{/Text \343}', 'web' => "\x{aa}"}, # Feminine ordinal.
1017: '(laquo|#171)' => {'tex' => '{/Text \253}', 'web' => "\x{ab}"}, # << quotes.
1018: '(not|#172)' => {'tex' => '\254', 'web' => "\x{ac}"}, # Logical not.
1.143 foxr 1019: '(shy|#173)' => {'tex' => '\255', 'web' => "\x{ad}"}, # soft hyphen.
1.138 foxr 1020: '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm.
1.143 foxr 1021: '(macr|#175)' => {'tex' => '^{\255}', 'web' => "\x{af}"}, # 'naked' macron (overbar).
1022: '(deg|#176)' => {'tex' => '{/Text \260}', 'web' => "\x{b0}"}, # Degree symbo..`
1.138 foxr 1023: '(plusmn|#177)' => {'tex' => '{/Symbol \261}', 'web' => "\x{b1}"}, # +/- symbol.
1024: '(sup2|#178)' => {'tex' => '^2', 'web' => "\x{b2}"}, # Superscript 2.
1025: '(sup3|#179)' => {'tex' => '^3', 'web' => "\x{b3}"}, # Superscript 3.
1.143 foxr 1026: '(acute|#180)' => {'tex' => '{/Text \222}', 'web' => "\x{b4}"}, # 'naked' acute accent.
1.138 foxr 1027: '(micro|#181)' => {'tex' => '{/Symbol \155}', 'web' => "\x{b5}"}, # Micro (small mu).
1028: '(para|#182)' => {'tex' => '{/Text \266}', 'web' => "\x{b6}"}, # Paragraph symbol.
1.143 foxr 1029: '(middot|#183)' => {'tex' => '\267', 'web' => "\x{b7}"}, # middle dot
1.138 foxr 1030: '(cedil|#184)' => {'tex' => '\233', 'web' => "\x{b8}"}, # 'naked' cedilla.
1031: '(sup1|#185)' => {'tex' => '^1', 'web' => "\x{b9}"}, # superscript 1.
1.143 foxr 1032: '(ordm|#186)' => {'tex' => '{\260}', 'web' => "\x{ba}"}, # masculine ordinal.
1.138 foxr 1033: '(raquo|#187)', => {'tex' => '\273', 'web' => "\x{bb}"}, # Right angle quotes.
1034: '(frac14|#188)' => {'tex' => '\274', 'web' => "\x{bc}"}, # 1/4.
1035: '(frac12|#189)' => {'tex' => '\275', 'web' => "\x{bd}"}, # 1/2.
1036: '(frac34|#190)' => {'tex' => '\276', 'web' => "\x{be}"}, # 3/4
1037: '(iquest|#191)' => {'tex' => '{/Text \277}', 'web' => "\x{bf}"}, # Inverted ?
1038: '(Agrave|#192)' => {'tex' => '\300', 'web' => "\x{c0}"}, # A Grave.
1039: '(Aacute|#193)' => {'tex' => '\301', 'web' => "\x{c1}"}, # A Acute.
1040: '(Acirc|#194)' => {'tex' => '\302', 'web' => "\x{c2}"}, # A Circumflex.
1041: '(Atilde|#195)' => {'tex' => '\303', 'web' => "\x{c3}"}, # A tilde.
1042: '(Auml|#196)' => {'tex' => '\304', 'web' => "\x{c4}"}, # A umlaut.
1043: '(Aring|#197)' => {'tex' => '\305', 'web' => "\x{c5}"}, # A ring.
1.139 foxr 1044: '(AElig|#198)' => {'tex' => '\306', 'web' => "\x{c6}"}, # AE ligature.
1045: '(Ccedil|#199)' => {'tex' => '\307', 'web' => "\x{c7}"}, # C cedilla
1046: '(Egrave|#200)' => {'tex' => '\310', 'web' => "\x{c8}"}, # E Accent grave.
1047: '(Eacute|#201)' => {'tex' => '\311', 'web' => "\x{c9}"}, # E acute accent.
1048: '(Ecirc|#202)' => {'tex' => '\312', 'web' => "\x{ca}"}, # E Circumflex.
1049: '(Euml|#203)' => {'tex' => '\313', 'web' => "\x{cb}"}, # E umlaut.
1050: '(Igrave|#204)' => {'tex' => '\314', 'web' => "\x{cc}"}, # I grave accent.
1051: '(Iacute|#205)' => {'tex' => '\315', 'web' => "\x{cd}"}, # I acute accent.
1052: '(Icirc|#206)' => {'tex' => '\316', 'web' => "\x{ce}"}, # I circumflex.
1053: '(Iuml|#207)' => {'tex' => '\317', 'web' => "\x{cf}"}, # I umlaut.
1054: '(ETH|#208)' => {'tex' => '\320', 'web' => "\x{d0}"}, # Icelandic Cap eth.
1055: '(Ntilde|#209)' => {'tex' => '\321', 'web' => "\x{d1}"}, # Ntilde (enyan).
1056: '(Ograve|#210)' => {'tex' => '\322', 'web' => "\x{d2}"}, # O accent grave.
1057: '(Oacute|#211)' => {'tex' => '\323', 'web' => "\x{d3}"}, # O accent acute.
1058: '(Ocirc|#212)' => {'tex' => '\324', 'web' => "\x{d4}"}, # O circumflex.
1059: '(Otilde|#213)' => {'tex' => '\325', 'web' => "\x{d5}"}, # O tilde.
1060: '(Ouml|#214)' => {'tex' => '\326', 'web' => "\x{d6}"}, # O umlaut.
1061: '(times|#215)' => {'tex' => '\327', 'web' => "\x{d7}"}, # Times symbol.
1062: '(Oslash|#216)' => {'tex' => '\330', 'web' => "\x{d8}"}, # O slash.
1063: '(Ugrave|#217)' => {'tex' => '\331', 'web' => "\x{d9}"}, # U accent grave.
1064: '(Uacute|#218)' => {'tex' => '\332', 'web' => "\x{da}"}, # U accent acute.
1065: '(Ucirc|#219)' => {'tex' => '\333', 'web' => "\x{db}"}, # U circumflex.
1066: '(Uuml|#220)' => {'tex' => '\334', 'web' => "\x{dc}"}, # U umlaut.
1067: '(Yacute|#221)' => {'tex' => '\335', 'web' => "\x{dd}"}, # Y accent acute.
1068: '(THORN|#222)' => {'tex' => '\336', 'web' => "\x{de}"}, # Icelandic thorn.
1069: '(szlig|#223)' => {'tex' => '\337', 'web' => "\x{df}"}, # German sharfes s.
1070: '(agrave|#224)' => {'tex' => '\340', 'web' => "\x{e0}"}, # a accent grave.
1071: '(aacute|#225)' => {'tex' => '\341', 'web' => "\x{e1}"}, # a grave.
1072: '(acirc|#226)' => {'tex' => '\342', 'web' => "\x{e2}"}, # a circumflex.
1073: '(atilde|#227)' => {'tex' => '\343', 'web' => "\x{e3}"}, # a tilde.
1074: '(auml|#228)' => {'tex' => '\344', 'web' => "\x{e4}"}, # a umlaut
1075: '(aring|#229)' => {'tex' => '\345', 'web' => "\x{e5}"}, # a ring on top.
1076: '(aelig|#230)' => {'tex' => '\346', 'web' => "\x{e6}"}, # ae ligature.
1.142 foxr 1077: '(ccedil|#231)' => {'tex' => '\347', 'web' => "\x{e7}"}, # C cedilla
1.139 foxr 1078: '(egrave|#232)' => {'tex' => '\350', 'web' => "\x{e8}"}, # e accent grave.
1079: '(eacute|#233)' => {'tex' => '\351', 'web' => "\x{e9}"}, # e accent acute.
1080: '(ecirc|#234)' => {'tex' => '\352', 'web' => "\x{ea}" }, # e circumflex.
1081: '(euml|#235)' => {'tex' => '\353', 'web' => "\x{eb}"}, # e umlaut.
1082: '(igrave|#236)' => {'tex' => '\354', 'web' => "\x{ec}"}, # i grave.
1.142 foxr 1083: '(iacute|#237)' => {'tex' => '\355', 'web' => "\x{ed}"}, # i acute.
1084: '(icirc|#238)' => {'tex' => '\356', 'web' => "\x{ee}"}, # i circumflex.
1.139 foxr 1085: '(iuml|#239)' => {'tex' => '\357', 'web' => "\x{ef}"}, # i umlaut.
1086: '(eth|#240)' => {'tex' => '\360', 'web' => "\x{f0}"}, # Icelandic eth.
1087: '(ntilde|#241)' => {'tex' => '\361', 'web' => "\x{f1}"}, # n tilde.
1088: '(ograve|#242)' => {'tex' => '\362', 'web' => "\x{f2}"}, # o grave.
1089: '(oacute|#243)' => {'tex' => '\363', 'web' => "\x{f3}"}, # o acute.
1.143 foxr 1090: '(ocirc|#244)' => {'tex' => '\364', 'web' => "\x{f4}"}, # o circumflex.
1.139 foxr 1091: '(otilde|#245)' => {'tex' => '\365', 'web' => "\x{f5}"}, # o tilde.
1092: '(ouml|#246)' => {'tex' => '\366', 'web' => "\x{f6}"}, # o umlaut.
1093: '(divide|#247)' => {'tex' => '\367', 'web' => "\x{f7}"}, # division symbol
1094: '(oslash|#248)' => {'tex' => '\370', 'web' => "\x{f8}"}, # o slashed.
1095: '(ugrave|#249)' => {'tex' => '\371', 'web' => "\x{f9}"}, # u accent grave.
1096: '(uacute|#250)' => {'tex' => '\372', 'web' => "\x{fa}"}, # u acute.
1097: '(ucirc|#251)' => {'tex' => '\373', 'web' => "\x{fb}"}, # u circumflex.
1098: '(uuml|#252)' => {'tex' => '\374', 'web' => "\x{fc}"}, # u umlaut.
1099: '(yacute|#253)' => {'tex' => '\375', 'web' => "\x{fd}"}, # y acute accent.
1100: '(thorn|#254)' => {'tex' => '\376', 'web' => "\x{fe}"}, # small thorn (icelandic).
1101: '(yuml|#255)' => {'tex' => '\377', 'web' => "\x{ff}"}, # y umlaut.
1102:
1103: # Latin extended A entities:
1104:
1.143 foxr 1105: '(OElig|#338)' => {'tex' => '{/Text \326}', 'web' => "\x{152}"}, # OE ligature.
1106: '(oelig|#339)' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.
1.139 foxr 1107: '(Scaron|#352)' => {'tex' => 'S', 'web' => "\x{160}"}, # S caron no printable.
1108: '(scaron|#353)' => {'tex' => 's', 'web' => "\x{161}"}, # s caron no printable.
1109: '(Yuml|#376)' => {'tex' => 'Y', 'web' => "\x{178}"}, # Y umlaut - no printable.
1110:
1111: # Latin extended B.
1112:
1.143 foxr 1113: '(fnof|#402)' => {'tex' =>'{/Symbol \246}', 'web' => "\x{192}"}, # f with little hook.
1.139 foxr 1114:
1.140 foxr 1115: # Standalone accents:
1.139 foxr 1116:
1117: '(circ|#710)' => {'tex' => '^', 'web' => '^'}, # circumflex.
1118: '(tilde|#732)' => {'tex' => '~', 'web' => '~'}, # tilde.
1119:
1.140 foxr 1120: # General punctuation. We're not able to make a distinction between
1121: # the various length spacings in the print version. (e.g. en/em/thin).
1122: # the various joiners will be empty strings in the print version too.
1123:
1124:
1125: '(ensp|#8194)' => {'tex' => ' ', 'web' => "\x{2002}"}, # en space.
1126: '(emsp|#8195)' => {'tex' => ' ', 'web' => "\x{2003}"}, # em space.
1127: '(thinsp|#8201)' => {'tex' => ' ', 'web' => "\x{2009}"}, # thin space.
1.144 foxr 1128: '(zwnj|#8204)' => {'tex' => ' ', 'web' => "\x{200c}"}, # Zero width non joiner.
1129: '(zwj|#8205)' => {'tex' => ' ', 'web' => "\x{200d}"}, # Zero width joiner.
1130: '(lrm|#8206)' => {'tex' => ' ', 'web' => "\x{200e}"}, # Left to right mark
1131: '(rlm|#8207)' => {'tex' => ' ', 'web' => "\x{200f}"}, # right to left mark.
1.140 foxr 1132: '(ndash|#8211)' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash.
1133: '(mdash|#8212)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash.
1134: '(lsquo|#8216)' => {'tex' => '{/Text \140}', 'web' => "\x{2018}"}, # Left single quote.
1.144 foxr 1135: '(rsquo|#8217)' => {'tex' => '\47', 'web' => "\x{2019}"}, # Right single quote.
1136: '(sbquo|#8218)' => {'tex' => '\54', 'web' => "\x{201a}"}, # Single low-9 quote.
1137: '(ldquo|#8220)' => {'tex' => '\42', 'web' => "\x{201c}"}, # Left double quote.
1138: '(rdquo|#8221)' => {'tex' => '\42', 'web' => "\x{201d}"}, # Right double quote.
1139: '(bdquo|#8222)' => {'tex' => ',', 'web' => "\x{201e}"}, # Double low-9 quote.
1140: '(dagger|#8224)' => {'tex' => '+', 'web' => "\x{2020}"}, # Is this a dagger I see before me now?
1.145 foxr 1141: '(Dagger|#8225)' => {'tex' => '\261', 'web' => "\x{2021}"}, # it's handle pointing towards my heart?
1.140 foxr 1142: '(bull|#8226)' => {'tex' => '\267', 'web' => "\x{2022}"}, # Bullet.
1.144 foxr 1143: '(hellep|#8230)' => {'tex' => '{/Symbol \274}', 'web' => "\x{2026}"}, # Ellipses.
1144: '(permil|#8240)' => {'tex' => '%_o', 'web' => "\x{2031}"}, # Per mille.
1.140 foxr 1145: '(prime|#8242)' => {'tex' => '\264', 'web' => "\x{2032}"}, # Prime.
1146: '(Prime|#8243)' => {'tex' => '{/Symbol \262}', 'web' => "\x{2033}"}, # double prime.
1.144 foxr 1147: '(lsaquo|#8249)' => {'tex' => '<', 'web' => "\x{2039}"}, # < quote.
1148: '(rsaquo|#8250)' => {'tex' => '\74', 'web' => "\x{203a}"}, # > quote.
1.140 foxr 1149: '(oline|#8254)' => {'tex' => '{/Symbol \140}', 'web' => "\x{203e}"}, # Overline.
1150: '(frasl|#8260)' => {'tex' => '/', 'web' => "\x{2044}"}, # Fraction slash.
1.144 foxr 1151: '(euro|#8364)' => {'tex' => '{/Symbol \240}', 'web' => "\x{20ac}"}, # Euro currency.
1.140 foxr 1152:
1153: # Letter like symbols.
1154:
1155: '(weierp|#8472)' => {'tex' => '{/Symbol \303}', 'web' => "\x{2118}"}, # Power set symbol
1156: '(image|#8465)' => {'tex' => '{/Symbol \301}', 'web' => "\x{2111}"}, # Imaginary part
1157: '(real|#8476)' => {'tex' => '{/Symbol \302}', 'web' => "\x{211c}"}, # Real part.
1158: '(trade|#8482)' => {'tex' => '{/Symbol \344}', 'web' => "\x{2122}"}, # trademark symbol.
1159: '(alefsym|#8501)' => {'tex' => '{/Symbol \300}', 'web' => "\x{2135}"}, # Hebrew alef.
1160:
1161: # Arrows of various types and directions.
1162: '(larr|#8592)' => {'tex' => '{/Symbol \254}', 'web' => "\x{2190}"}, # <--
1.142 foxr 1163: '(uarr|#8593)' => {'tex' => '{/Symbol \255}', 'web' => "\x{2191}"}, # up arrow.
1.140 foxr 1164: '(rarr|#8594)' => {'tex' => '{/Symbol \256}', 'web' => "\x{2192}"}, # -->
1165: '(darr|#8595)' => {'tex' => '{/Symbol \257}', 'web' => "\x{2193}"}, # down arrow.
1166: '(harr|#8596)' => {'tex' => '{/Symbol \253}', 'web' => "\x{2194}"}, # <-->
1167: '(crarr|#8629)' => {'tex' => '{/Symbol \277}', 'web' => "\x{21b5}"}, # corner arrow down and right.
1168: '(lArr|#8656)' => {'tex' => '{/Symbol \334}', 'web' => "\x{21d0}"}, # <==
1169: '(uArr|#8657)' => {'tex' => '{/Symbol \335}', 'web' => "\x{21d1}"}, # Up double arrow.
1170: '(rArr|#8658)' => {'tex' => '{/Symbol \336}', 'web' => "\x{21d2}"}, # ==>
1171: '(dArr|#8659)' => {'tex' => '{/Symbol \337}', 'web' => "\x{21d3}"}, # Down double arrow.
1172: '(hArr|#8660)' => {'tex' => '{/Symbol \333}', 'web' => "\x{21d4}"}, # <==>
1173:
1174: # Mathematical operators. For some of these we do the best we can in printing.
1175:
1176: '(forall|#8704)' => {'tex' => '{/Symbol \42}', 'web' => "\x{2200}"}, # For all.
1177: '(part|#8706)' => {'tex' => '{/Symbol d}', 'web' => "\x{2202}"}, # partial derivative
1178: '(exist|#8707)' => {'tex' => '{/Symbol \44}', 'web' => "\x{2203}"}, # There exists.
1179: '(empty|#8709)' => {'tex' => '{/Symbol \306}', 'web' => "\x{2205}"}, # Null set.
1180: '(nabla|#8711)' => {'tex' => '{/Symbol \321}', 'web' => "\x{2207}"}, # Gradient e.g.
1181: '(isin|#8712)' => {'tex' => '{/Symbol \316}', 'web' => "\x{2208}"}, # Element of the set.
1.145 foxr 1182: '(notin|#8713)' => {'tex' => '{/Symbol \317}', 'web' => "\x{2209}"}, # Not an element of
1.140 foxr 1183: '(ni|#8715)' => {'tex' => '{/Symbol \47}', 'web' => "\x{220b}"}, # Contains as a member
1184: '(prod|#8719)' => {'tex' => '{/Symbol \325}', 'web' => "\x{220f}"}, # Product
1185: '(sum|#8721)' => {'tex' => '{/Symbol \345}', 'web' => "\x{2211}"}, # Sum of.
1.145 foxr 1186: '(minus|#8722)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2212}"}, # - sign.
1.140 foxr 1187: '(lowast|#8727)' => {'tex' => '*', 'web' => "\x{2217}"}, # *
1188: '(radic|#8730)' => {'tex' => '{/Symbol \326}', 'web' => "\x{221a}"}, # Square root.
1189: '(prop|#8733)' => {'tex' => '{/Symbol \265}', 'web' => "\x{221d}"}, # Proportional to.
1190: '(infin|#8734)' => {'tex' => '{/Symbol \245}', 'web' => "\x{221e}"}, # Infinity.
1191: '(ang|#8736)' => {'tex' => '{/Symbol \320}', 'web' => "\x{2220}"}, # Angle .
1192: '(and|#8743)' => {'tex' => '{/Symbol \331}', 'web' => "\x{2227}"}, # Logical and.
1193: '(or|#8744)' => {'tex' => '{/Symbol \332}', 'web' => "\x{2228}"}, # Logical or.
1194: '(cap|#8745)' => {'tex' => '{/Symbol \307}', 'web' => "\x{2229}"}, # Set intersection.
1195: '(cup|#8746)' => {'tex' => '{/Symbol \310}', 'web' => "\x{222a}"}, # Set union.
1196: '(int|8747)' => {'tex' => '{/Symbol \362}', 'web' => "\x{222b}"}, # Integral.
1.145 foxr 1197:
1198: # Some gnuplot guru will have to explain to me why the next three
1199: # require the extra slashes... else they print very funkily.
1200:
1201: '(there4|#8756)' => {'tex' => '{/Symbol \\\134}', 'web' => "\x{2234}"}, # Therefore triple dots.
1202: '(sim|#8764)' => {'tex' => '\\\176', 'web' => "\x{223c}"}, # Simlar to.
1203: '(cong|#8773)' => {'tex' => '{/Symbol \\\100}','web' => "\x{2245}"}, # Congruent to/with.
1204:
1205: '(asymp|#8776)' => {'tex' => '{/Symbol \273}', 'web' => "\x{2248}"}, # Asymptotic to.
1.141 foxr 1206: '(ne|#8800)' => {'tex' => '{/Symbol \271}', 'web' => "\x{2260}"}, # not equal to.
1207: '(equiv|#8801)' => {'tex' => '{/Symbol \272}', 'web' => "\x{2261}"}, # Equivalent to.
1208: '(le|8804)' => {'tex' => '{/Symbol \243}', 'web' => "\x{2264}"}, # Less than or equal to.
1209: '(ge|8805)' => {'tex' => '{/Symbol \263}', 'web' => "\x{2265}"}, # Greater than or equal to
1210: '(sub|8834)' => {'tex' => '{/Symbol \314}', 'web' => "\x{2282}"}, # Subset of.
1211: '(sup|8835)' => {'tex' => '{/Symbol \311}', 'web' => "\x{2283}"}, # Super set of.
1212: '(nsub|8836)' => {'tex' => '{/Symbol \313}', 'web' => "\x{2284}"}, # not subset of.
1213: '(sube|8838)' => {'tex' => '{/Symbol \315}', 'web' => "\x{2286}"}, # Subset or equal.
1214: '(supe|8839)' => {'tex' => '{/Symbol \312}', 'web' => "\x{2287}"}, # Superset or equal
1215: '(oplus|8853)' => {'tex' => '{/Symbol \305}', 'web' => "\x{2295}"}, # O with plus inside
1216: '(otimes|8855)' => {'tex' => '{/Symbol \304}', 'web' => "\x{2297}"}, # O with times.
1217: '(perp|8869)' => {'tex' => '{/Symbol \136}', 'web' => "\x{22a5}"}, # Perpendicular.
1218: '(sdot|8901)' => {'tex' => '{/Symbol \227}', 'web' => "\x{22c5}"}, # Dot operator.
1219:
1220: # Misc. technical symbols:
1221:
1222: '(lceil|8698)' => {'tex' => '{/Symbol \351}', 'web' => "\x{2308}"}, # Left ceiling.
1223: '(rceil|8969)' => {'tex' => '{/Symbol \371}', 'web' => "\x{2309}"}, # Right ceiling.
1224: '(lfloor|8970)' => {'tex' => '{/Symbol \353}', 'web' => "\x{230a}"}, # Left floor.
1225: '(rfloor|8971)' => {'tex' => '{/Symbol \373}', 'web' => "\x{230b}"}, # Right floor.
1.145 foxr 1226:
1227: # The gnuplot png font evidently does not have the big angle brackets at
1228: # positions 0x2329, 0x232a so use ordinary brackets.
1229:
1230: '(lang|9001)' => {'tex' => '{/Symbol \341}', 'web' => '<'}, # Left angle bracket.
1231: '(rang|9002)' => {'tex' => '{/Symbol \361}', 'web' => '>'}, # Right angle bracket.
1.141 foxr 1232:
1233: # Gemoetric shapes.
1234:
1235: '(loz|9674)' => {'tex' => '{/Symbol \340}', 'web' => "\x{25ca}"}, # Lozenge.
1236:
1237: # Misc. symbols
1238:
1239: '(spades|9824)' => {'tex' => '{/Symbol \252}', 'web' => "\x{2660}"},
1240: '(clubs|9827)' => {'tex' => '{/Symbol \247}', 'web' => "\x{2663}"},
1241: '(hearts|9829)' => {'tex' => '{/Symbol \251}', 'web' => "\x{2665}"},
1242: '(diams|9830)' => {'tex' => '{/Symbol \250}', 'web' => "\x{2666}"}
1.139 foxr 1243:
1.133 albertel 1244: );
1245:
1.128 albertel 1246:
1247: sub replace_entities {
1248: my ($target,$text) = @_;
1249: $text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g;
1250: while (my ($re, $replace) = each(%lookup)) {
1.137 foxr 1251: my $repl = $replace->{$target};
1.128 albertel 1252: $text =~ s/&$re;/$replace->{$target}/g;
1253: }
1254: $text =~ s{(&)}{\\\\$1}g;
1255: return $text;
1.127 albertel 1256: }
1257:
1.1 matthew 1258: ##------------------------------------------------------------------- title
1259: sub start_title {
1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1261: my $result='';
1.51 matthew 1262: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 1263: $title = &Apache::lonxml::get_all_text("/title",$parser,$style);
1.58 matthew 1264: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1.49 matthew 1265: $title =~ s/\n/ /g;
1.32 matthew 1266: if (length($title) > $max_str_len) {
1267: $title = substr($title,0,$max_str_len);
1268: }
1.128 albertel 1269: $title = &parse_label($target,$title);
1.20 matthew 1270: } elsif ($target eq 'edit') {
1.25 matthew 1271: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.112 albertel 1272: my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
1.116 albertel 1273: $result.=&Apache::edit::editline('',$text,'',60);
1.20 matthew 1274: } elsif ($target eq 'modified') {
1.42 matthew 1275: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1276: $result.=&Apache::edit::modifiedfield("/title",$parser);
1.4 matthew 1277: }
1.1 matthew 1278: return $result;
1279: }
1280:
1281: sub end_title {
1282: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1283: my $result = '';
1.51 matthew 1284: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1285: } elsif ($target eq 'edit') {
1.27 matthew 1286: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1287: }
1.1 matthew 1288: return $result;
1289: }
1290: ##------------------------------------------------------------------- xlabel
1291: sub start_xlabel {
1292: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1293: my $result='';
1.51 matthew 1294: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 1295: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.58 matthew 1296: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1.49 matthew 1297: $xlabel =~ s/\n/ /g;
1.32 matthew 1298: if (length($xlabel) > $max_str_len) {
1299: $xlabel = substr($xlabel,0,$max_str_len);
1300: }
1.128 albertel 1301: $xlabel = &parse_label($target,$xlabel);
1.20 matthew 1302: } elsif ($target eq 'edit') {
1.25 matthew 1303: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.112 albertel 1304: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.116 albertel 1305: $result.=&Apache::edit::editline('',$text,'',60);
1.20 matthew 1306: } elsif ($target eq 'modified') {
1.42 matthew 1307: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1308: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
1.4 matthew 1309: }
1.1 matthew 1310: return $result;
1311: }
1312:
1313: sub end_xlabel {
1314: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1315: my $result = '';
1.51 matthew 1316: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1317: } elsif ($target eq 'edit') {
1.27 matthew 1318: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1319: }
1.1 matthew 1320: return $result;
1321: }
1.21 matthew 1322:
1.1 matthew 1323: ##------------------------------------------------------------------- ylabel
1324: sub start_ylabel {
1325: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1326: my $result='';
1.51 matthew 1327: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 1328: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.58 matthew 1329: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1.49 matthew 1330: $ylabel =~ s/\n/ /g;
1.32 matthew 1331: if (length($ylabel) > $max_str_len) {
1332: $ylabel = substr($ylabel,0,$max_str_len);
1333: }
1.128 albertel 1334: $ylabel = &parse_label($target,$ylabel);
1.20 matthew 1335: } elsif ($target eq 'edit') {
1.25 matthew 1336: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.112 albertel 1337: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.116 albertel 1338: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 1339: } elsif ($target eq 'modified') {
1.42 matthew 1340: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1341: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
1.4 matthew 1342: }
1.1 matthew 1343: return $result;
1344: }
1345:
1346: sub end_ylabel {
1347: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1348: my $result = '';
1.51 matthew 1349: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1350: } elsif ($target eq 'edit') {
1.27 matthew 1351: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1352: }
1.1 matthew 1353: return $result;
1354: }
1.21 matthew 1355:
1.1 matthew 1356: ##------------------------------------------------------------------- label
1357: sub start_label {
1358: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1359: my $result='';
1.51 matthew 1360: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1361: my %label;
1362: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 1363: $tagstack->[-1]);
1.112 albertel 1364: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.58 matthew 1365: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1.49 matthew 1366: $text =~ s/\n/ /g;
1.32 matthew 1367: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
1.128 albertel 1368: $label{'text'} = &parse_label($target,$text);
1.17 matthew 1369: push(@labels,\%label);
1.20 matthew 1370: } elsif ($target eq 'edit') {
1.25 matthew 1371: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 1372: $result .= &edit_attributes($target,$token,\%label_defaults);
1.112 albertel 1373: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.39 matthew 1374: $result .= &Apache::edit::end_row().
1375: &Apache::edit::start_spanning_row().
1.63 albertel 1376: &Apache::edit::editline('',$text,'',60);
1.20 matthew 1377: } elsif ($target eq 'modified') {
1.42 matthew 1378: &Apache::edit::get_new_args
1.24 matthew 1379: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 1380: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1381: $result.=&Apache::edit::modifiedfield("/label",$parser);
1.4 matthew 1382: }
1.1 matthew 1383: return $result;
1384: }
1385:
1386: sub end_label {
1387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1388: my $result = '';
1.51 matthew 1389: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1390: } elsif ($target eq 'edit') {
1.21 matthew 1391: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1392: }
1.1 matthew 1393: return $result;
1394: }
1395:
1396: ##------------------------------------------------------------------- curve
1397: sub start_curve {
1398: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1399: my $result='';
1.25 matthew 1400: &Apache::lonxml::register('Apache::lonplot',('function','data'));
1401: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 1402: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1403: my %curve;
1404: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 1405: $tagstack->[-1]);
1.17 matthew 1406: push (@curves,\%curve);
1.20 matthew 1407: } elsif ($target eq 'edit') {
1.26 matthew 1408: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.60 matthew 1409: $result .= &edit_attributes($target,$token,\%curve_defaults,
1.116 albertel 1410: \@curve_edit_order)
1411: .&Apache::edit::end_row()
1412: .&Apache::edit::start_spanning_row();
1413:
1.20 matthew 1414: } elsif ($target eq 'modified') {
1415: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 1416: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 1417: if ($constructtag) {
1.155 foxr 1418: #
1419: # Fix up the color attribute as jcolor does not prepend an x
1420: #
1421: my $value = $token->[2]{'color'};
1422: if (defined $value && !($value =~ /^x/)) {
1423: $token->[2]{'color'} = 'x' . $value;
1424: }
1.20 matthew 1425: $result = &Apache::edit::rebuild_tag($token);
1426: }
1.4 matthew 1427: }
1.1 matthew 1428: return $result;
1429: }
1430:
1431: sub end_curve {
1432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1433: my $result = '';
1.25 matthew 1434: pop @Apache::lonxml::namespace;
1435: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 1436: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1437: } elsif ($target eq 'edit') {
1.21 matthew 1438: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1439: }
1.1 matthew 1440: return $result;
1441: }
1.21 matthew 1442:
1.1 matthew 1443: ##------------------------------------------------------------ curve function
1444: sub start_function {
1445: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1446: my $result='';
1.51 matthew 1447: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1448: if (exists($curves[-1]->{'data'})) {
1.85 matthew 1449: &Apache::lonxml::warning
1450: ('Use of the <b>curve function</b> tag precludes use of '.
1451: ' the <b>curve data</b> tag. '.
1452: 'The curve data tag will be omitted in favor of the '.
1453: 'curve function declaration.');
1.17 matthew 1454: delete $curves[-1]->{'data'} ;
1455: }
1.112 albertel 1456: my $function = &Apache::lonxml::get_all_text("/function",$parser,
1457: $style);
1.58 matthew 1458: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
1.147 www 1459: $function=~s/\^/\*\*/gs;
1.58 matthew 1460: $curves[-1]->{'function'} = $function;
1.20 matthew 1461: } elsif ($target eq 'edit') {
1.37 matthew 1462: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.112 albertel 1463: my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
1.116 albertel 1464: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 1465: } elsif ($target eq 'modified') {
1.42 matthew 1466: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1467: $result.=&Apache::edit::modifiedfield("/function",$parser);
1.4 matthew 1468: }
1.1 matthew 1469: return $result;
1470: }
1471:
1472: sub end_function {
1473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1474: my $result = '';
1.51 matthew 1475: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1476: } elsif ($target eq 'edit') {
1.26 matthew 1477: $result .= &Apache::edit::end_table();
1.4 matthew 1478: }
1.1 matthew 1479: return $result;
1480: }
1.21 matthew 1481:
1.1 matthew 1482: ##------------------------------------------------------------ curve data
1483: sub start_data {
1484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1485: my $result='';
1.51 matthew 1486: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1487: if (exists($curves[-1]->{'function'})) {
1.85 matthew 1488: &Apache::lonxml::warning
1489: ('Use of the <b>curve function</b> tag precludes use of '.
1490: ' the <b>curve data</b> tag. '.
1491: 'The curve function tag will be omitted in favor of the '.
1492: 'curve data declaration.');
1.17 matthew 1493: delete($curves[-1]->{'function'});
1494: }
1.112 albertel 1495: my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.58 matthew 1496: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1.40 matthew 1497: # Deal with cases where we're given an array...
1498: if ($datatext =~ /^\@/) {
1499: $datatext = &Apache::run::run('return "'.$datatext.'"',
1500: $safeeval,1);
1501: }
1.49 matthew 1502: $datatext =~ s/\s+/ /g;
1.17 matthew 1503: # Need to do some error checking on the @data array -
1504: # make sure it's all numbers and make sure each array
1505: # is of the same length.
1506: my @data;
1.35 matthew 1507: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 1508: @data = split /,/,$datatext;
1.95 www 1509: } else { # Assume it's space separated.
1.17 matthew 1510: @data = split / /,$datatext;
1511: }
1512: for (my $i=0;$i<=$#data;$i++) {
1513: # Check that it's non-empty
1.19 matthew 1514: if (! defined($data[$i])) {
1515: &Apache::lonxml::warning(
1.85 matthew 1516: 'undefined curve data value. Replacing with '.
1.19 matthew 1517: ' pi/e = 1.15572734979092');
1518: $data[$i] = 1.15572734979092;
1519: }
1.17 matthew 1520: # Check that it's a number
1.19 matthew 1521: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
1522: &Apache::lonxml::warning(
1.85 matthew 1523: 'Bad curve data value of '.$data[$i].' Replacing with '.
1.19 matthew 1524: ' pi/e = 1.15572734979092');
1525: $data[$i] = 1.15572734979092;
1526: }
1.17 matthew 1527: }
1.35 matthew 1528: # complain if the number of data points is not the same as
1529: # in previous sets of data.
1.150 raeburn 1530: if (($curves[-1]->{'data'}) && ($#data != $#{$curves[-1]->{'data'}->[0]})){
1.35 matthew 1531: &Apache::lonxml::warning
1532: ('Number of data points is not consistent with previous '.
1533: 'number of data points');
1534: }
1.17 matthew 1535: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 1536: } elsif ($target eq 'edit') {
1.37 matthew 1537: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.112 albertel 1538: my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.116 albertel 1539: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 1540: } elsif ($target eq 'modified') {
1.42 matthew 1541: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1542: $result.=&Apache::edit::modifiedfield("/data",$parser);
1.4 matthew 1543: }
1.1 matthew 1544: return $result;
1545: }
1546:
1547: sub end_data {
1548: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1549: my $result = '';
1.51 matthew 1550: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1551: } elsif ($target eq 'edit') {
1.26 matthew 1552: $result .= &Apache::edit::end_table();
1.4 matthew 1553: }
1.1 matthew 1554: return $result;
1555: }
1556:
1557: ##------------------------------------------------------------------- axis
1558: sub start_axis {
1559: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1560: my $result='';
1.51 matthew 1561: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1562: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
1563: $tagstack->[-1]);
1.20 matthew 1564: } elsif ($target eq 'edit') {
1.25 matthew 1565: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.65 matthew 1566: $result .= &edit_attributes($target,$token,\%axis_defaults,
1567: \@axis_edit_order);
1.20 matthew 1568: } elsif ($target eq 'modified') {
1.29 matthew 1569: my $constructtag=&Apache::edit::get_new_args
1570: ($token,$parstack,$safeeval,keys(%axis_defaults));
1.155 foxr 1571:
1.29 matthew 1572: if ($constructtag) {
1.155 foxr 1573: #
1574: # Fix up the color attribute since jchooser does not
1575: # prepend an x to the color:
1576: #
1577: my $value = $token->[2]{'color'};
1578: if (defined $value && !($value =~ /^x/)) {
1579: $token->[2]{'color'} = 'x' . $value;
1580: }
1581:
1.29 matthew 1582: $result = &Apache::edit::rebuild_tag($token);
1583: }
1.4 matthew 1584: }
1.1 matthew 1585: return $result;
1586: }
1587:
1588: sub end_axis {
1589: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1590: my $result = '';
1.51 matthew 1591: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1592: } elsif ($target eq 'edit') {
1.21 matthew 1593: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 1594: } elsif ($target eq 'modified') {
1.4 matthew 1595: }
1.1 matthew 1596: return $result;
1597: }
1598:
1.21 matthew 1599: ###################################################################
1600: ## ##
1601: ## Utility Functions ##
1602: ## ##
1603: ###################################################################
1604:
1.13 matthew 1605: ##----------------------------------------------------------- set_defaults
1606: sub set_defaults {
1.21 matthew 1607: my ($var,$defaults) = @_;
1.13 matthew 1608: my $key;
1.24 matthew 1609: foreach $key (keys(%$defaults)) {
1.13 matthew 1610: $var->{$key} = $defaults->{$key}->{'default'};
1611: }
1612: }
1613:
1.1 matthew 1614: ##------------------------------------------------------------------- misc
1.2 matthew 1615: sub get_attributes{
1.21 matthew 1616: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 1617: foreach my $attr (keys(%{$defaults})) {
1.92 matthew 1618: if ($attr eq 'texwidth' || $attr eq 'texfont') {
1.86 albertel 1619: $values->{$attr} =
1620: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
1621: } else {
1622: $values->{$attr} =
1623: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1624: }
1.10 matthew 1625: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 1626: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 1627: next;
1628: }
1.10 matthew 1629: my $test = $defaults->{$attr}->{'test'};
1630: if (! &$test($values->{$attr})) {
1.6 matthew 1631: &Apache::lonxml::warning
1632: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 1633: .$defaults->{$attr}->{'default'} );
1634: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 1635: }
1.2 matthew 1636: }
1.11 matthew 1637: return ;
1.6 matthew 1638: }
1.162 ! foxr 1639: ##
! 1640: # Generate tic mark specifications.
! 1641: #
! 1642: # @param type - type of tics (xtics or ytics).
! 1643: # @param spec - Reference to a hash that contains the tic specification.
! 1644: # @param target - 'tex' if hard copy target.
! 1645: #
! 1646: # @return string - the tic specification command.
! 1647: #
! 1648: sub generate_tics {
! 1649: my ($type, $spec, $target) = @_;
! 1650: my $result = '';
! 1651:
! 1652:
! 1653: if (defined %$spec) {
! 1654:
! 1655:
! 1656:
! 1657: # Major tics:
! 1658:
! 1659: $result .= "set $type $spec->{'location'} ";
! 1660: $result .= ($spec->{'mirror'} eq 'on') ? 'mirror ' : 'nomirror ';
! 1661: $result .= "$spec->{'start'}, ";
! 1662: $result .= "$spec->{'increment'}, ";
! 1663: $result .= "$spec->{'end'} ";
! 1664: if ($target eq 'tex' ) {
! 1665: $result .= 'font "Helvetica,22"';
! 1666: }
! 1667: $result .= "\n";
! 1668:
! 1669: # minor frequency:
! 1670:
! 1671: if ($spec->{'minorfreq'} != 0) {
! 1672: $result .= "set m$type $spec->{'minorfreq'}\n";
! 1673: }
! 1674: } else {
! 1675: $result .= "set $type font " . '"Helvetica,22"' ."\n";
! 1676: }
! 1677:
! 1678:
! 1679: return $result;
! 1680: }
1.40 matthew 1681:
1.15 matthew 1682: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 1683: sub write_gnuplot_file {
1.51 matthew 1684: my ($tmpdir,$filename,$target)= @_;
1.124 albertel 1685: my ($fontsize, $font_properties) = &get_font($target);
1.6 matthew 1686: my $gnuplot_input = '';
1.10 matthew 1687: my $curve;
1.100 matthew 1688: #
1689: # Check to be sure we do not have any empty curves
1690: my @curvescopy;
1691: foreach my $curve (@curves) {
1692: if (exists($curve->{'function'})) {
1693: if ($curve->{'function'} !~ /^\s*$/) {
1694: push(@curvescopy,$curve);
1695: }
1696: } elsif (exists($curve->{'data'})) {
1697: foreach my $data (@{$curve->{'data'}}) {
1698: if (scalar(@$data) > 0) {
1699: push(@curvescopy,$curve);
1700: last;
1701: }
1702: }
1703: }
1704: }
1705: @curves = @curvescopy;
1.6 matthew 1706: # Collect all the colors
1707: my @Colors;
1.107 foxr 1708: push @Colors, $Apache::lonplot::plot{'bgcolor'};
1709: push @Colors, $Apache::lonplot::plot{'fgcolor'};
1710: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
1.9 matthew 1711: foreach $curve (@curves) {
1712: push @Colors, ($curve->{'color'} ne '' ?
1713: $curve->{'color'} :
1.107 foxr 1714: $Apache::lonplot::plot{'fgcolor'} );
1.6 matthew 1715: }
1.155 foxr 1716:
1.6 matthew 1717: # set term
1.51 matthew 1718: if ($target eq 'web') {
1.120 albertel 1719: $gnuplot_input .= 'set terminal png enhanced nocrop ';
1.107 foxr 1720: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
1.120 albertel 1721: $gnuplot_input .= 'font "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1722: '/'.$font_properties->{'file'}.'.ttf" ';
1723: $gnuplot_input .= $fontsize;
1724: $gnuplot_input .= ' size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
1.51 matthew 1725: $gnuplot_input .= "@Colors\n";
1726: # set output
1727: $gnuplot_input .= "set output\n";
1728: } elsif ($target eq 'tex') {
1.156 foxr 1729: $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} dash ";
1.121 albertel 1730: if (!$font_properties->{'tex_no_file'}) {
1731: $gnuplot_input .=
1732: 'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1733: '/'.$font_properties->{'file'}.'.pfb" ';
1734: }
1.120 albertel 1735: $gnuplot_input .= ' "'.$font_properties->{'printname'}.'" ';
1736: $gnuplot_input .= $fontsize;
1.153 foxr 1737: $gnuplot_input .= "\nset output \"".$tmpdir.
1.113 www 1738: &unescape($filename).".eps\"\n";
1.143 foxr 1739: $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font.
1740:
1.87 matthew 1741: }
1.159 foxr 1742: $gnuplot_input .= "set encoding utf8\n";
1.115 albertel 1743: # cartesian or polar plot?
1.107 foxr 1744: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
1.87 matthew 1745: $gnuplot_input .= 'set polar'.$/;
1746: } else {
1747: # Assume Cartesian
1.51 matthew 1748: }
1.115 albertel 1749: # cartesian or polar grid?
1750: if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
1751: $gnuplot_input .= 'set grid polar'.$/;
1.118 albertel 1752: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
1753: $gnuplot_input .= 'set logscale x'.$/;
1754: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
1755: $gnuplot_input .= 'set logscale y'.$/;
1756: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
1757: $gnuplot_input .= 'set logscale x'.$/;
1758: $gnuplot_input .= 'set logscale y'.$/;
1.115 albertel 1759: } else {
1760: # Assume Cartesian
1761: }
1.110 albertel 1762: # solid or pattern for boxes?
1763: if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
1764: $gnuplot_input .= 'set style fill solid '.
1765: $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
1766: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
1767: $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
1768: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
1769: }
1.101 matthew 1770: # margin
1.107 foxr 1771: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
1772: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
1.101 matthew 1773: }
1.107 foxr 1774: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
1775: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
1.101 matthew 1776: }
1.107 foxr 1777: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
1778: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
1.101 matthew 1779: }
1.107 foxr 1780: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
1781: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
1.101 matthew 1782: }
1.129 albertel 1783:
1.101 matthew 1784: # tic scales
1.129 albertel 1785: if ($version > 4) {
1786: $gnuplot_input .= 'set tics scale '.
1787: $Apache::lonplot::plot{'major_ticscale'}.', '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1788: } else {
1789: $gnuplot_input .= 'set ticscale '.
1790: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1791: }
1.110 albertel 1792: #boxwidth
1793: if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
1794: $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
1795: }
1796: # gridlayer
1797: $gnuplot_input .= 'set grid noxtics noytics front '.$/
1798: if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
1799:
1.7 matthew 1800: # grid
1.107 foxr 1801: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
1.7 matthew 1802: # border
1.107 foxr 1803: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
1.9 matthew 1804: 'set border'.$/ :
1.67 matthew 1805: 'set noborder'.$/ );
1.77 matthew 1806: # sampling rate for non-data curves
1.107 foxr 1807: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
1.67 matthew 1808: # title, xlabel, ylabel
1.45 matthew 1809: # titles
1.125 albertel 1810: my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';
1811: my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';
1812:
1.89 matthew 1813: if ($target eq 'tex') {
1.125 albertel 1814: $gnuplot_input .= "set title \"$title\" font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
1815: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($xlabel));
1816: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($ylabel));
1.89 matthew 1817: } else {
1.125 albertel 1818: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1819: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x \n" if (defined($xlabel));
1820: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));
1.89 matthew 1821: }
1.45 matthew 1822: # tics
1.162 ! foxr 1823: $gnuplot_input .= &generate_tics('xtics', \%xtics, $target);
! 1824:
! 1825: $gnuplot_input .= &generate_tics('ytics', \%ytics, $target);
! 1826:
1.45 matthew 1827: # axis
1.23 matthew 1828: if (%axis) {
1.132 albertel 1829: if ($axis{'xformat'} ne 'on') {
1830: $gnuplot_input .= "set format x ";
1831: if ($axis{'xformat'} eq 'off') {
1832: $gnuplot_input .= "\"\"\n";
1833: } else {
1834: $gnuplot_input .= "\"\%.".$axis{'xformat'}."\"\n";
1835: }
1836: }
1837: if ($axis{'yformat'} ne 'on') {
1838: $gnuplot_input .= "set format y ";
1839: if ($axis{'yformat'} eq 'off') {
1840: $gnuplot_input .= "\"\"\n";
1841: } else {
1842: $gnuplot_input .= "\"\%.".$axis{'yformat'}."\"\n";
1843: }
1844: }
1.13 matthew 1845: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1846: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.152 faziophi 1847: if ($axis{'xzero'} ne 'off') {
1848: $gnuplot_input .= "set xzeroaxis ";
1849: if ($axis{'xzero'} eq 'line' || $axis{'xzero'} eq 'thick-line') {
1850: $gnuplot_input .= "lt -1 ";
1851: if ($axis{'xzero'} eq 'thick-line') {
1852: $gnuplot_input .= "lw 3 ";
1853: }
1854: }
1855: $gnuplot_input .= "\n";
1856: }
1857: if ($axis{'yzero'} ne 'off') {
1858: $gnuplot_input .= "set yzeroaxis ";
1859: if ($axis{'yzero'} eq 'line' || $axis{'yzero'} eq 'thick-line') {
1860: $gnuplot_input .= "lt -1 ";
1861: if ($axis{'yzero'} eq 'thick-line') {
1862: $gnuplot_input .= "lw 3 ";
1863: }
1864: }
1865: $gnuplot_input .= "\n";
1866: }
1.6 matthew 1867: }
1868: # Key
1.23 matthew 1869: if (%key) {
1.9 matthew 1870: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1871: if ($key{'title'} ne '') {
1.67 matthew 1872: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1.11 matthew 1873: }
1874: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 1875: } else {
1.9 matthew 1876: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 1877: }
1.6 matthew 1878: # labels
1.10 matthew 1879: my $label;
1.6 matthew 1880: foreach $label (@labels) {
1881: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.134 raeburn 1882: $label->{'xpos'}.','.$label->{'ypos'};
1883: if ($label->{'rotate'} ne '') {
1884: $gnuplot_input .= ' rotate by '.$label->{'rotate'};
1885: }
1886: $gnuplot_input .= ' '.$label->{'justify'};
1887:
1.103 matthew 1888: if ($target eq 'tex') {
1.124 albertel 1889: $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ;
1.103 matthew 1890: }
1891: $gnuplot_input .= $/;
1.6 matthew 1892: }
1.74 matthew 1893: if ($target eq 'tex') {
1.107 foxr 1894: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
1.74 matthew 1895: $gnuplot_input .="\n";
1.120 albertel 1896: }
1.6 matthew 1897: # curves
1.156 foxr 1898: #
1899: # Each curve will have its very own linestyle.
1900: # (This should work just fine in web rendition I think).
1901: # The line_xxx variables will hold the elements of the line style.
1902: # type (solid/dashed), color, width
1903: #
1904: my $linestyle_index = 50;
1905: my $line_width = '';
1906:
1.160 foxr 1907: # If arrows are needed there will be an arrow style for each as well:
1908: #
1909:
1910: my $arrow_style_index = 50;
1911:
1.156 foxr 1912: my $plot_command;
1913: my $plot_type;
1914:
1.9 matthew 1915: for (my $i = 0;$i<=$#curves;$i++) {
1916: $curve = $curves[$i];
1.156 foxr 1917: $plot_command.= ', ' if ($i > 0);
1.119 albertel 1918: if ($target eq 'tex') {
1919: $curve->{'linewidth'} *= 2;
1920: }
1.157 foxr 1921: $line_width = $curve->{'linewidth'};
1.6 matthew 1922: if (exists($curve->{'function'})) {
1.156 foxr 1923: $plot_type =
1.9 matthew 1924: $curve->{'function'}.' title "'.
1925: $curve->{'name'}.'" with '.
1.72 matthew 1926: $curve->{'linestyle'};
1.6 matthew 1927: } elsif (exists($curve->{'data'})) {
1.40 matthew 1928: # Store data values in $datatext
1929: my $datatext = '';
1930: # get new filename
1.70 matthew 1931: my $datafilename = "$tmpdir/$filename.data.$i";
1.40 matthew 1932: my $fh=Apache::File->new(">$datafilename");
1933: # Compile data
1.6 matthew 1934: my @Data = @{$curve->{'data'}};
1.9 matthew 1935: my @Data0 = @{$Data[0]};
1936: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1937: my $dataset;
1.6 matthew 1938: foreach $dataset (@Data) {
1.9 matthew 1939: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1940: }
1.9 matthew 1941: $datatext .= $/;
1.6 matthew 1942: }
1.40 matthew 1943: # write file
1944: print $fh $datatext;
1.119 albertel 1945: close($fh);
1.40 matthew 1946: # generate gnuplot text
1.156 foxr 1947: $plot_type = '"'.$datafilename.'" title "'.
1.40 matthew 1948: $curve->{'name'}.'" with '.
1949: $curve->{'linestyle'};
1.6 matthew 1950: }
1.157 foxr 1951: my $pointtype = '';
1952: my $pointsize = '';
1953:
1.160 foxr 1954: # Figure out the linestyle:
1955:
1956: my $lt = $curve->{'linetype'} ne '' ? $curve->{'linetype'}
1957: : 'solid'; # Line type defaults to solid.
1958: # The mapping of lt -> the actual gnuplot line type depends on the target:
1959:
1960: if ($target eq 'tex') {
1961: $lt = $ps_linetypes{$lt};
1962: } else {
1963: $lt = $linetypes{$lt}
1964: }
1965:
1966: my $color = $curve->{'color'};
1967: $color =~ s/^x/#/; # Convert xhex color -> #hex color.
1968:
1969: my $style_command = "set style line $linestyle_index $pointtype $pointsize linetype $lt linewidth $line_width lc rgb '$color'\n";
1970: $gnuplot_input .= $style_command;
1971:
1972:
1973:
1.156 foxr 1974: if (($curve->{'linestyle'} eq 'points') ||
1975: ($curve->{'linestyle'} eq 'linespoints') ||
1976: ($curve->{'linestyle'} eq 'errorbars') ||
1977: ($curve->{'linestyle'} eq 'xerrorbars') ||
1978: ($curve->{'linestyle'} eq 'yerrorbars') ||
1979: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1.157 foxr 1980:
1981: $pointtype =' pointtype '.$curve->{'pointtype'};
1982: $pointsize =' pointsize '.$curve->{'pointsize'};
1.156 foxr 1983: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1984: $plot_command.= ' '.$curve->{'limit'};
1.160 foxr 1985: } elsif ($curve->{'linestyle'} eq 'vector') {
1.157 foxr 1986:
1.160 foxr 1987: # Create the arrow head style add it to
1988: # $gnuplot_input..and ensure it gets
1989: # Selected in the plot command.
1.157 foxr 1990:
1.160 foxr 1991: $gnuplot_input .= "set style arrow $arrow_style_index ";
1992: $gnuplot_input .= ' ' . $curve->{'arrowhead'};
1993: $gnuplot_input .= ' size ' . $curve->{'arrowlength'};
1994: $gnuplot_input .= ','.$curve->{'arrowangle'};
1995: $gnuplot_input .= ',' . $curve->{'arrowbackangle'};
1996: $gnuplot_input .= ' ' . $curve->{'arrowstyle'} . " ls $linestyle_index\n";
1.157 foxr 1997:
1998:
1.160 foxr 1999: $plot_command .= " arrowstyle $arrow_style_index ";
2000: $arrow_style_index++;
1.156 foxr 2001: }
1.157 foxr 2002:
2003:
2004:
1.160 foxr 2005:
2006: # The condition below is because gnuplot lumps the linestyle in with the
2007: # arrowstyle _sigh_.
2008:
2009: if ($curve->{'linestyle'} ne 'vector') {
2010: $plot_command.= " ls $linestyle_index";
2011: }
2012:
1.156 foxr 2013: $gnuplot_input .= 'plot ' . $plot_type . ' ' . $plot_command . "\n";
1.157 foxr 2014: $linestyle_index++; # Each curve get a unique linestyle.
1.6 matthew 2015: }
1.40 matthew 2016: # Write the output to a file.
1.162 ! foxr 2017: &Apache::lonnet::logthis($gnuplot_input);
1.161 foxr 2018: open (my $fh, "> $tmpdir$filename.data");
2019: binmode($fh, ':utf8');
1.40 matthew 2020: print $fh $gnuplot_input;
2021: close($fh);
2022: # That's all folks.
2023: return ;
1.2 matthew 2024: }
1.21 matthew 2025:
2026: #---------------------------------------------- check_inputs
2027: sub check_inputs {
2028: ## Note: no inputs, no outputs - this acts only on global variables.
2029: ## Make sure we have all the input we need:
1.107 foxr 2030: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
1.23 matthew 2031: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 2032: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 2033: if (! defined($title )) {} # No title for this plot, thats okay
2034: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
2035: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
2036: if ($#labels < 0) { } # No labels for this plot, thats okay
2037: if ($#curves < 0) {
2038: &Apache::lonxml::warning("No curves specified for plot!!!!");
2039: return '';
2040: }
2041: my $curve;
2042: foreach $curve (@curves) {
2043: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1.85 matthew 2044: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1.21 matthew 2045: return '';
2046: }
2047: }
2048: }
2049:
1.20 matthew 2050: #------------------------------------------------ make_edit
2051: sub edit_attributes {
1.34 matthew 2052: my ($target,$token,$defaults,$keys) = @_;
2053: my ($result,@keys);
2054: if ($keys && ref($keys) eq 'ARRAY') {
2055: @keys = @$keys;
2056: } else {
2057: @keys = sort(keys(%$defaults));
2058: }
2059: foreach my $attr (@keys) {
1.35 matthew 2060: # append a ' ' to the description if it doesn't have one already.
2061: my $description = $defaults->{$attr}->{'description'};
2062: $description .= ' ' if ($description !~ / $/);
1.20 matthew 2063: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 2064: $result .= &Apache::edit::text_arg
1.38 matthew 2065: ($description,$attr,$token,
1.154 foxr 2066: $defaults->{$attr}->{'size'},
2067: $defaults->{$attr}->{'class'});
1.20 matthew 2068: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.102 albertel 2069: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 2070: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 2071: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.102 albertel 2072: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 2073: ($description,$attr,['on','off'],$token);
1.20 matthew 2074: }
1.25 matthew 2075: $result .= '<br />';
1.20 matthew 2076: }
2077: return $result;
2078: }
1.1 matthew 2079:
1.21 matthew 2080:
2081: ###################################################################
2082: ## ##
2083: ## Insertion functions for editing plots ##
2084: ## ##
2085: ###################################################################
2086:
1.47 matthew 2087: sub insert_gnuplot {
1.29 matthew 2088: my $result = '';
1.20 matthew 2089: # plot attributes
1.61 matthew 2090: $result .= "\n<gnuplot ";
1.47 matthew 2091: foreach my $attr (keys(%gnuplot_defaults)) {
1.61 matthew 2092: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1.20 matthew 2093: }
1.61 matthew 2094: $result .= ">";
1.47 matthew 2095: # Add the components (most are commented out for simplicity)
1.44 matthew 2096: # $result .= &insert_key();
2097: # $result .= &insert_axis();
2098: # $result .= &insert_title();
2099: # $result .= &insert_xlabel();
2100: # $result .= &insert_ylabel();
1.20 matthew 2101: $result .= &insert_curve();
1.50 matthew 2102: # close up the <gnuplot>
1.61 matthew 2103: $result .= "\n</gnuplot>";
1.45 matthew 2104: return $result;
2105: }
2106:
1.46 matthew 2107: sub insert_tics {
2108: my $result;
2109: $result .= &insert_xtics() . &insert_ytics;
2110: return $result;
2111: }
2112:
1.45 matthew 2113: sub insert_xtics {
2114: my $result;
1.46 matthew 2115: $result .= "\n <xtics ";
1.45 matthew 2116: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 2117: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 2118: }
1.61 matthew 2119: $result .= "/>";
1.45 matthew 2120: return $result;
2121: }
2122:
2123: sub insert_ytics {
2124: my $result;
1.46 matthew 2125: $result .= "\n <ytics ";
1.45 matthew 2126: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 2127: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 2128: }
1.61 matthew 2129: $result .= "/>";
1.20 matthew 2130: return $result;
2131: }
2132:
2133: sub insert_key {
2134: my $result;
1.61 matthew 2135: $result .= "\n <key ";
1.30 matthew 2136: foreach my $attr (keys(%key_defaults)) {
1.61 matthew 2137: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1.20 matthew 2138: }
1.61 matthew 2139: $result .= " />";
1.20 matthew 2140: return $result;
2141: }
2142:
2143: sub insert_axis{
2144: my $result;
1.46 matthew 2145: $result .= "\n <axis ";
1.30 matthew 2146: foreach my $attr (keys(%axis_defaults)) {
1.61 matthew 2147: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1.20 matthew 2148: }
1.61 matthew 2149: $result .= " />";
1.20 matthew 2150: return $result;
2151: }
1.28 matthew 2152:
1.61 matthew 2153: sub insert_title { return "\n <title></title>"; }
2154: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
2155: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1.20 matthew 2156:
2157: sub insert_label {
2158: my $result;
1.46 matthew 2159: $result .= "\n <label ";
1.30 matthew 2160: foreach my $attr (keys(%label_defaults)) {
1.61 matthew 2161: $result .= "\n $attr=\"".
2162: $label_defaults{$attr}->{'default'}."\"";
1.20 matthew 2163: }
1.61 matthew 2164: $result .= "></label>";
1.20 matthew 2165: return $result;
2166: }
2167:
2168: sub insert_curve {
2169: my $result;
1.41 matthew 2170: $result .= "\n <curve ";
1.30 matthew 2171: foreach my $attr (keys(%curve_defaults)) {
1.61 matthew 2172: $result .= "\n $attr=\"".
2173: $curve_defaults{$attr}->{'default'}."\"";
1.20 matthew 2174: }
1.61 matthew 2175: $result .= " >";
2176: $result .= &insert_data().&insert_data()."\n </curve>";
1.20 matthew 2177: }
1.4 matthew 2178:
1.20 matthew 2179: sub insert_function {
2180: my $result;
1.61 matthew 2181: $result .= "\n <function></function>";
1.20 matthew 2182: return $result;
2183: }
1.4 matthew 2184:
1.20 matthew 2185: sub insert_data {
2186: my $result;
1.61 matthew 2187: $result .= "\n <data></data>";
1.20 matthew 2188: return $result;
2189: }
1.4 matthew 2190:
1.48 matthew 2191: ##----------------------------------------------------------------------
1.20 matthew 2192: 1;
2193: __END__
1.4 matthew 2194:
2195:
1.149 jms 2196: =head1 NAME
2197:
2198: Apache::lonplot.pm
2199:
2200: =head1 SYNOPSIS
2201:
2202: XML-based plotter of graphs
2203:
2204: This is part of the LearningOnline Network with CAPA project
2205: described at http://www.lon-capa.org.
2206:
2207:
2208: =head1 SUBROUTINES (parsing and edit rendering)
2209:
2210: =over
2211:
2212: =item start_gnuplot()
2213:
2214: =item end_gnuplot()
2215:
2216: =item start_xtics()
2217:
2218: =item end_xtics()
2219:
2220: =item start_ytics()
2221:
2222: =item end_ytics()
2223:
2224: =item get_font()
2225:
2226: =item start_key()
2227:
2228: =item end_key()
2229:
2230: =item parse_label()
2231:
2232: =item replace_entities()
2233:
2234: =item start_title()
2235:
2236: =item end_title()
2237:
2238: =item start_xlabel()
2239:
2240: =item end_xlabel()
2241:
2242: =item start_ylabel()
2243:
2244: =item end_label()
2245:
2246: =item start_curve()
2247:
2248: =item end_curve()
2249:
2250: =item start_function()
2251:
2252: =item end_function()
2253:
2254: =item start_data()
2255:
2256: =item end_data()
2257:
2258: =item start_axis()
2259:
2260: =item end_axis
2261:
2262: =back
2263:
2264: =head1 SUBROUTINES (Utility)
2265:
2266: =over
2267:
2268: =item set_defaults()
2269:
2270: =item get_attributes()
2271:
2272: =item write_gnuplot_file()
2273:
2274: =item check_inputs()
2275:
2276: =item edit_attributes()
2277:
2278: =back
2279:
2280: =head1 SUBROUTINES (Insertion functions for editing plots)
2281:
2282: =over
2283:
2284: =item insert_gnuplot()
2285:
2286: =item insert_tics()
2287:
2288: =item insert_xtics()
2289:
2290: =item insert_key()
2291:
2292: =item insert_axis()
2293:
2294: =item insert_title()
2295:
2296: =item insert_xlabel()
2297:
2298: =item insert_ylabel()
2299:
2300: =item insert_label()
2301:
2302: =item insert_curve()
2303:
2304: =item insert_function()
2305:
2306: =item insert_data()
2307:
2308: =back
2309:
2310: =cut
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