Annotation of loncom/xml/lonplot.pm, revision 1.113
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.113 ! www 4: # $Id: lonplot.pm,v 1.112 2005/12/01 18:46:17 albertel 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:
1.1 matthew 29: package Apache::lonplot;
1.10 matthew 30:
1.1 matthew 31: use strict;
1.89 matthew 32: use warnings FATAL=>'all';
33: no warnings 'uninitialized';
1.10 matthew 34: use Apache::File;
1.1 matthew 35: use Apache::response;
1.2 matthew 36: use Apache::lonxml;
1.20 matthew 37: use Apache::edit;
1.106 albertel 38: use Apache::lonnet;
1.113 ! www 39: use lib '/home/httpd/lib/perl/';
! 40: use LONCAPA;
! 41:
1.10 matthew 42:
1.97 matthew 43: use vars qw/$weboutputformat $versionstring/;
44:
1.109 foxr 45:
1.108 foxr 46:
1.33 harris41 47: BEGIN {
1.97 matthew 48: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
49: #
50: # Determine the version of GNUPLOT
51: $weboutputformat = 'gif';
1.99 matthew 52: $versionstring = `gnuplot --version 2>/dev/null`;
1.97 matthew 53: if ($versionstring =~ /^gnuplot 4/) {
54: $weboutputformat = 'png';
55: }
1.108 foxr 56:
57: }
58:
1.1 matthew 59:
1.10 matthew 60: ##
61: ## Description of data structures:
62: ##
63: ## %plot %key %axis
64: ## --------------------------
65: ## height title color
66: ## width box xmin
67: ## bgcolor pos xmax
68: ## fgcolor ymin
69: ## transparent ymax
70: ## grid
71: ## border
72: ## font
1.19 matthew 73: ## align
1.10 matthew 74: ##
75: ## @labels: $labels[$i] = \%label
76: ## %label: text, xpos, ypos, justify
1.14 matthew 77: ##
1.10 matthew 78: ## @curves: $curves[$i] = \%curve
1.14 matthew 79: ## %curve: name, linestyle, ( function | data )
1.10 matthew 80: ##
81: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
82: ## [y1,y2,y3,y4] ]
83: ##
1.21 matthew 84:
85: ###################################################################
86: ## ##
87: ## Tests used in checking the validitity of input ##
88: ## ##
89: ###################################################################
1.29 matthew 90:
1.32 matthew 91: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
92: # is longer than this, it will be truncated.
93:
1.29 matthew 94: my %linestyles =
95: (
96: lines => 2, # Maybe this will be used in the future
97: linespoints => 2, # to check on whether or not they have
98: dots => 2, # supplied enough <data></data> fields
99: points => 2, # to use the given line style. But for
100: steps => 2, # now there are more important things
101: fsteps => 2, # for me to deal with.
102: histeps => 2,
1.34 matthew 103: errorbars => 3,
104: xerrorbars => [3,4],
105: yerrorbars => [3,4],
1.35 matthew 106: xyerrorbars => [4,6],
1.34 matthew 107: boxes => 3,
1.110 albertel 108: filledcurves => 2,
1.35 matthew 109: vector => 4
1.29 matthew 110: );
111:
1.11 matthew 112: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 113: my $real_test =
114: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.62 matthew 115: my $pos_real_test =
116: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
1.79 matthew 117: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
1.1 matthew 118: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 119: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.1 matthew 120: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
1.29 matthew 121: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.67 matthew 122: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
1.21 matthew 123:
124: ###################################################################
125: ## ##
126: ## Attribute metadata ##
127: ## ##
128: ###################################################################
1.47 matthew 129: my @gnuplot_edit_order =
1.82 matthew 130: qw/alttag bgcolor fgcolor height width font transparent grid samples
1.105 matthew 131: border align texwidth texfont plotcolor plottype lmargin rmargin tmargin
1.110 albertel 132: bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
133: pattern solid/;
1.101 matthew 134:
1.105 matthew 135: my $margin_choices = ['default',0..20];
1.48 matthew 136:
1.47 matthew 137: my %gnuplot_defaults =
1.1 matthew 138: (
1.64 matthew 139: alttag => {
140: default => 'dynamically generated plot',
141: test => $words_test,
142: description => 'brief description of the plot',
143: edit_type => 'entry',
144: size => '40'
145: },
1.20 matthew 146: height => {
1.65 matthew 147: default => 300,
1.20 matthew 148: test => $int_test,
1.29 matthew 149: description => 'height of image (pixels)',
1.38 matthew 150: edit_type => 'entry',
151: size => '10'
1.20 matthew 152: },
153: width => {
1.65 matthew 154: default => 400,
1.20 matthew 155: test => $int_test,
1.29 matthew 156: description => 'width of image (pixels)',
1.38 matthew 157: edit_type => 'entry',
158: size => '10'
1.20 matthew 159: },
160: bgcolor => {
161: default => 'xffffff',
162: test => $color_test,
163: description => 'background color of image (xffffff)',
1.38 matthew 164: edit_type => 'entry',
165: size => '10'
1.20 matthew 166: },
167: fgcolor => {
168: default => 'x000000',
169: test => $color_test,
170: description => 'foreground color of image (x000000)',
1.38 matthew 171: edit_type => 'entry',
172: size => '10'
1.20 matthew 173: },
174: transparent => {
175: default => 'off',
176: test => $onoff_test,
1.34 matthew 177: description => 'Transparent image',
1.45 matthew 178: edit_type => 'onoff'
1.20 matthew 179: },
180: grid => {
1.65 matthew 181: default => 'on',
1.20 matthew 182: test => $onoff_test,
1.34 matthew 183: description => 'Display grid',
1.45 matthew 184: edit_type => 'onoff'
1.20 matthew 185: },
1.110 albertel 186: gridlayer => {
187: default => 'off',
188: test => $onoff_test,
189: description => 'Display grid front layer over filled boxes or filled curves',
190: edit_type => 'onoff'
191: },
192: box_border => {
193: default => 'noborder',
194: test => sub {$_[0]=~/^(noborder|border)$/},
195: description => 'Draw border for boxes',
196: edit_type => 'choice',
197: choices => ['border','noborder']
198: },
1.20 matthew 199: border => {
200: default => 'on',
201: test => $onoff_test,
1.34 matthew 202: description => 'Draw border around plot',
1.45 matthew 203: edit_type => 'onoff'
1.20 matthew 204: },
205: font => {
206: default => 'medium',
207: test => $sml_test,
208: description => 'Size of font to use',
209: edit_type => 'choice',
210: choices => ['small','medium','large']
211: },
1.110 albertel 212: samples => {
1.77 matthew 213: default => '100',
214: test => $int_test,
215: description => 'Number of samples for non-data plots',
216: edit_type => 'choice',
217: choices => ['100','200','500','1000','2000','5000']
218: },
1.20 matthew 219: align => {
1.65 matthew 220: default => 'center',
1.20 matthew 221: test => sub {$_[0]=~/^(left|right|center)$/},
222: description => 'alignment for image in html',
223: edit_type => 'choice',
224: choices => ['left','right','center']
1.82 matthew 225: },
226: texwidth => {
227: default => '93',
228: test => $int_test,
229: description => 'Width of plot when printed (mm)',
230: edit_type => 'entry',
231: size => '5'
232: },
1.110 albertel 233: texfont => {
1.92 matthew 234: default => '22',
235: test => $int_test,
236: description => 'Font size to use in TeX output (pts):',
237: edit_type => 'choice',
1.96 matthew 238: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
1.92 matthew 239: },
1.110 albertel 240: plotcolor => {
1.105 matthew 241: default => 'monochrome',
242: test => sub {$_[0]=~/^(monochrome|color|colour)$/},
243: description => 'Color setting for printing:',
244: edit_type => 'choice',
245: choices => [qw/monochrome color colour/],
246: },
1.110 albertel 247: pattern => {
248: default => '',
249: test => $int_test,
250: description => 'pattern value for boxes:',
251: edit_type => 'choice',
252: choices => [0,1,2,3,4,5,6]
253: },
254: solid => {
255: default => 0,
256: test => $real_test,
257: description => 'The density of fill style for boxes',
258: edit_type => 'entry',
259: size => '5'
260: },
261: fillstyle => {
262: default => 'empty',
263: test => sub {$_[0]=~/^(empty|solid|pattern)$/},
264: description => 'Filled style for boxes:',
265: edit_type => 'choice',
266: choices => ['empty','solid','pattern']
267: },
268: plottype => {
1.87 matthew 269: default => 'Cartesian',
270: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
271: description => 'Plot type:',
272: edit_type => 'choice',
1.94 matthew 273: choices => ['Cartesian','Polar']
1.87 matthew 274: },
1.110 albertel 275: lmargin => {
1.101 matthew 276: default => 'default',
277: test => sub {$_[0]=~/^(default|\d+)$/},
278: description => 'Left margin width (pts):',
279: edit_type => 'choice',
280: choices => $margin_choices,
281: },
1.110 albertel 282: rmargin => {
1.101 matthew 283: default => 'default',
284: test => sub {$_[0]=~/^(default|\d+)$/},
285: description => 'Right margin width (pts):',
286: edit_type => 'choice',
287: choices => $margin_choices,
288: },
1.110 albertel 289: tmargin => {
1.101 matthew 290: default => 'default',
291: test => sub {$_[0]=~/^(default|\d+)$/},
292: description => 'Top margin width (pts):',
293: edit_type => 'choice',
294: choices => $margin_choices,
295: },
1.110 albertel 296: bmargin => {
1.101 matthew 297: default => 'default',
298: test => sub {$_[0]=~/^(default|\d+)$/},
1.104 www 299: description => 'Bottom margin width (pts):',
1.101 matthew 300: edit_type => 'choice',
301: choices => $margin_choices,
302: },
1.110 albertel 303: boxwidth => {
304: default => '',
305: test => $real_test,
306: description => 'width of boxes default auto',
307: edit_type => 'entry',
308: size => '5'
309: },
1.101 matthew 310: major_ticscale => {
311: default => '1',
312: test => $real_test,
313: description => 'Size of major tic marks (plot coordinates)',
314: edit_type => 'entry',
315: size => '5'
316: },
317: minor_ticscale => {
318: default => '0.5',
319: test => $real_test,
320: description => 'Size of minor tic mark (plot coordinates)',
321: edit_type => 'entry',
322: size => '5'
323: },
1.1 matthew 324: );
325:
326: my %key_defaults =
327: (
1.20 matthew 328: title => {
329: default => '',
330: test => $words_test,
331: description => 'Title of key',
1.38 matthew 332: edit_type => 'entry',
333: size => '40'
1.20 matthew 334: },
335: box => {
336: default => 'off',
337: test => $onoff_test,
338: description => 'Draw a box around the key?',
1.45 matthew 339: edit_type => 'onoff'
1.20 matthew 340: },
341: pos => {
342: default => 'top right',
343: test => $key_pos_test,
344: description => 'position of the key on the plot',
345: edit_type => 'choice',
346: choices => ['top left','top right','bottom left','bottom right',
347: 'outside','below']
348: }
1.1 matthew 349: );
350:
351: my %label_defaults =
352: (
1.20 matthew 353: xpos => {
354: default => 0,
355: test => $real_test,
356: description => 'x position of label (graph coordinates)',
1.38 matthew 357: edit_type => 'entry',
358: size => '10'
1.20 matthew 359: },
360: ypos => {
361: default => 0,
362: test => $real_test,
363: description => 'y position of label (graph coordinates)',
1.38 matthew 364: edit_type => 'entry',
365: size => '10'
1.20 matthew 366: },
367: justify => {
368: default => 'left',
369: test => sub {$_[0]=~/^(left|right|center)$/},
370: description => 'justification of the label text on the plot',
371: edit_type => 'choice',
372: choices => ['left','right','center']
373: }
1.1 matthew 374: );
375:
1.89 matthew 376: my @tic_edit_order = ('location','mirror','start','increment','end',
377: 'minorfreq');
1.45 matthew 378: my %tic_defaults =
379: (
380: location => {
381: default => 'border',
382: test => sub {$_[0]=~/^(border|axis)$/},
1.90 matthew 383: description => 'Location of major tic marks',
1.45 matthew 384: edit_type => 'choice',
385: choices => ['border','axis']
386: },
387: mirror => {
388: default => 'on',
389: test => $onoff_test,
1.90 matthew 390: description => 'mirror tics on opposite axis?',
1.45 matthew 391: edit_type => 'onoff'
392: },
393: start => {
394: default => '-10.0',
395: test => $real_test,
1.90 matthew 396: description => 'Start major tics at',
1.45 matthew 397: edit_type => 'entry',
398: size => '10'
399: },
400: increment => {
401: default => '1.0',
402: test => $real_test,
1.90 matthew 403: description => 'Place a major tic every',
1.45 matthew 404: edit_type => 'entry',
405: size => '10'
406: },
407: end => {
408: default => ' 10.0',
409: test => $real_test,
1.90 matthew 410: description => 'Stop major tics at ',
1.45 matthew 411: edit_type => 'entry',
412: size => '10'
413: },
1.89 matthew 414: minorfreq => {
415: default => '0',
416: test => $int_test,
1.98 matthew 417: description => 'Number of minor tics per major tic mark',
1.89 matthew 418: edit_type => 'entry',
419: size => '10'
420: },
1.45 matthew 421: );
422:
1.65 matthew 423: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax');
1.1 matthew 424: my %axis_defaults =
425: (
1.28 matthew 426: color => {
1.20 matthew 427: default => 'x000000',
428: test => $color_test,
1.78 matthew 429: description => 'color of grid lines (x000000)',
1.38 matthew 430: edit_type => 'entry',
431: size => '10'
1.20 matthew 432: },
433: xmin => {
434: default => '-10.0',
435: test => $real_test,
436: description => 'minimum x-value shown in plot',
1.38 matthew 437: edit_type => 'entry',
438: size => '10'
1.20 matthew 439: },
440: xmax => {
441: default => ' 10.0',
442: test => $real_test,
443: description => 'maximum x-value shown in plot',
1.38 matthew 444: edit_type => 'entry',
445: size => '10'
1.20 matthew 446: },
447: ymin => {
448: default => '-10.0',
449: test => $real_test,
450: description => 'minimum y-value shown in plot',
1.38 matthew 451: edit_type => 'entry',
452: size => '10'
1.20 matthew 453: },
454: ymax => {
455: default => ' 10.0',
456: test => $real_test,
457: description => 'maximum y-value shown in plot',
1.38 matthew 458: edit_type => 'entry',
459: size => '10'
1.20 matthew 460: }
1.1 matthew 461: );
462:
1.110 albertel 463: my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize','limit');
1.60 matthew 464:
1.1 matthew 465: my %curve_defaults =
466: (
1.20 matthew 467: color => {
468: default => 'x000000',
469: test => $color_test,
470: description => 'color of curve (x000000)',
1.38 matthew 471: edit_type => 'entry',
472: size => '10'
1.20 matthew 473: },
474: name => {
475: default => '',
476: test => $words_test,
477: description => 'name of curve to appear in key',
1.38 matthew 478: edit_type => 'entry',
479: size => '20'
1.20 matthew 480: },
481: linestyle => {
482: default => 'lines',
483: test => $linestyle_test,
1.35 matthew 484: description => 'Line style',
1.20 matthew 485: edit_type => 'choice',
1.38 matthew 486: choices => [keys(%linestyles)]
1.60 matthew 487: },
488: # gnuplots term=gif driver does not handle linewidth :(
489: # linewidth => {
490: # default => 1,
491: # test => $int_test,
492: # description => 'Line width (may not apply to all line styles)',
493: # edit_type => 'choice',
494: # choices => [1,2,3,4,5,6,7,8,9,10]
495: # },
496: pointsize => {
497: default => 1,
1.62 matthew 498: test => $pos_real_test,
499: description => 'point size (may not apply to all line styles)',
500: edit_type => 'entry',
501: size => '5'
502: },
503: pointtype => {
504: default => 1,
1.60 matthew 505: test => $int_test,
1.62 matthew 506: description => 'point type (may not apply to all line styles)',
1.60 matthew 507: edit_type => 'choice',
1.62 matthew 508: choices => [0,1,2,3,4,5,6]
1.110 albertel 509: },
510: limit => {
511: default => 'closed',
512: test => sub {$_[0]=~/^(closed|x1|x2|y1|y2)$/},
513: description => 'point to fill -- for filledcurves',
514: edit_type => 'choice',
515: choices => ['closed','x1','x2','y1','y2']
516: },
1.1 matthew 517: );
518:
1.21 matthew 519: ###################################################################
520: ## ##
521: ## parsing and edit rendering ##
522: ## ##
523: ###################################################################
1.107 foxr 524:
525: undef %Apache::lonplot::plot;
526: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 527:
1.47 matthew 528: sub start_gnuplot {
1.107 foxr 529: undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
1.89 matthew 530: undef($title); undef($xlabel); undef($ylabel);
531: undef(@labels); undef(@curves);
532: undef(%xtics); undef(%ytics);
1.6 matthew 533: #
1.1 matthew 534: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
535: my $result='';
1.25 matthew 536: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 537: ('title','xlabel','ylabel','key','axis','label','curve',
538: 'xtics','ytics'));
1.29 matthew 539: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 540: if ($target eq 'web' || $target eq 'tex') {
1.107 foxr 541: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 542: $tagstack->[-1]);
1.20 matthew 543: } elsif ($target eq 'edit') {
1.47 matthew 544: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
545: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
546: \@gnuplot_edit_order);
1.20 matthew 547: } elsif ($target eq 'modified') {
548: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 549: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.20 matthew 550: if ($constructtag) {
551: $result = &Apache::edit::rebuild_tag($token);
552: }
1.4 matthew 553: }
1.21 matthew 554: return $result;
1.1 matthew 555: }
556:
1.47 matthew 557: sub end_gnuplot {
1.1 matthew 558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
559: pop @Apache::lonxml::namespace;
1.4 matthew 560: &Apache::lonxml::deregister('Apache::lonplot',
561: ('title','xlabel','ylabel','key','axis','label','curve'));
562: my $result = '';
1.56 albertel 563: my $randnumber;
564: # need to call rand everytime start_script would evaluate, as the
565: # safe space rand number generator and the global rand generator
1.95 www 566: # are not separate
1.56 albertel 567: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
568: $target eq 'answer') {
569: $randnumber=int(rand(1000));
570: }
1.51 matthew 571: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 572: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 573: ##
574: ## Determine filename
1.4 matthew 575: my $tmpdir = '/home/httpd/perl/tmp/';
1.106 albertel 576: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
1.69 matthew 577: '_'.time.'_'.$$.$randnumber.'_plot';
1.4 matthew 578: ## Write the plot description to the file
1.51 matthew 579: &write_gnuplot_file($tmpdir,$filename,$target);
1.113 ! www 580: $filename = &escape($filename);
1.4 matthew 581: ## return image tag for the plot
1.51 matthew 582: if ($target eq 'web') {
583: $result .= <<"ENDIMAGE";
1.97 matthew 584: <img src = "/cgi-bin/plot.gif?file=$filename.data&output=$weboutputformat"
1.107 foxr 585: width = "$Apache::lonplot::plot{'width'}"
586: height = "$Apache::lonplot::plot{'height'}"
587: align = "$Apache::lonplot::plot{'align'}"
588: alt = "$Apache::lonplot::plot{'alttag'}" />
1.12 matthew 589: ENDIMAGE
1.51 matthew 590: } elsif ($target eq 'tex') {
1.107 foxr 591: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
592: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
1.91 albertel 593: #might be inside the safe space, register the URL for later
594: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
1.111 albertel 595: $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
1.109 foxr 596: $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n";
1.113 ! www 597: $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
1.51 matthew 598: }
1.20 matthew 599: } elsif ($target eq 'edit') {
1.21 matthew 600: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 601: }
1.1 matthew 602: return $result;
603: }
1.2 matthew 604:
1.45 matthew 605:
606: ##--------------------------------------------------------------- xtics
607: sub start_xtics {
608: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
609: my $result='';
1.51 matthew 610: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 611: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
612: $tagstack->[-1]);
613: } elsif ($target eq 'edit') {
614: $result .= &Apache::edit::tag_start($target,$token,'xtics');
615: $result .= &edit_attributes($target,$token,\%tic_defaults,
616: \@tic_edit_order);
617: } elsif ($target eq 'modified') {
618: my $constructtag=&Apache::edit::get_new_args
619: ($token,$parstack,$safeeval,keys(%tic_defaults));
620: if ($constructtag) {
621: $result = &Apache::edit::rebuild_tag($token);
622: }
623: }
624: return $result;
625: }
626:
627: sub end_xtics {
628: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
629: my $result = '';
1.51 matthew 630: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 631: } elsif ($target eq 'edit') {
632: $result.=&Apache::edit::tag_end($target,$token);
633: }
634: return $result;
635: }
636:
637: ##--------------------------------------------------------------- ytics
638: sub start_ytics {
639: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
640: my $result='';
1.51 matthew 641: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 642: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
643: $tagstack->[-1]);
644: } elsif ($target eq 'edit') {
645: $result .= &Apache::edit::tag_start($target,$token,'ytics');
646: $result .= &edit_attributes($target,$token,\%tic_defaults,
647: \@tic_edit_order);
648: } elsif ($target eq 'modified') {
649: my $constructtag=&Apache::edit::get_new_args
650: ($token,$parstack,$safeeval,keys(%tic_defaults));
651: if ($constructtag) {
652: $result = &Apache::edit::rebuild_tag($token);
653: }
654: }
655: return $result;
656: }
657:
658: sub end_ytics {
659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
660: my $result = '';
1.51 matthew 661: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 662: } elsif ($target eq 'edit') {
663: $result.=&Apache::edit::tag_end($target,$token);
664: }
665: return $result;
666: }
667:
668:
1.1 matthew 669: ##----------------------------------------------------------------- key
670: sub start_key {
671: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
672: my $result='';
1.51 matthew 673: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 674: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 675: $tagstack->[-1]);
1.20 matthew 676: } elsif ($target eq 'edit') {
1.25 matthew 677: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 678: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 679: } elsif ($target eq 'modified') {
680: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 681: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 682: if ($constructtag) {
683: $result = &Apache::edit::rebuild_tag($token);
684: }
1.4 matthew 685: }
1.1 matthew 686: return $result;
687: }
688:
689: sub end_key {
690: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
691: my $result = '';
1.51 matthew 692: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 693: } elsif ($target eq 'edit') {
1.21 matthew 694: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 695: }
1.1 matthew 696: return $result;
697: }
1.21 matthew 698:
1.1 matthew 699: ##------------------------------------------------------------------- title
700: sub start_title {
701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
702: my $result='';
1.51 matthew 703: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 704: $title = &Apache::lonxml::get_all_text("/title",$parser,$style);
1.58 matthew 705: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1.49 matthew 706: $title =~ s/\n/ /g;
1.32 matthew 707: if (length($title) > $max_str_len) {
708: $title = substr($title,0,$max_str_len);
709: }
1.20 matthew 710: } elsif ($target eq 'edit') {
1.25 matthew 711: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.112 albertel 712: my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
1.39 matthew 713: $result.=&Apache::edit::end_row().
714: &Apache::edit::start_spanning_row().
1.63 albertel 715: &Apache::edit::editline('',$text,'',60);
1.20 matthew 716: } elsif ($target eq 'modified') {
1.42 matthew 717: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 718: $result.=&Apache::edit::modifiedfield("/title",$parser);
1.4 matthew 719: }
1.1 matthew 720: return $result;
721: }
722:
723: sub end_title {
724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
725: my $result = '';
1.51 matthew 726: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 727: } elsif ($target eq 'edit') {
1.27 matthew 728: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 729: }
1.1 matthew 730: return $result;
731: }
732: ##------------------------------------------------------------------- xlabel
733: sub start_xlabel {
734: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
735: my $result='';
1.51 matthew 736: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 737: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.58 matthew 738: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1.49 matthew 739: $xlabel =~ s/\n/ /g;
1.32 matthew 740: if (length($xlabel) > $max_str_len) {
741: $xlabel = substr($xlabel,0,$max_str_len);
742: }
1.20 matthew 743: } elsif ($target eq 'edit') {
1.25 matthew 744: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.112 albertel 745: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.39 matthew 746: $result.=&Apache::edit::end_row().
747: &Apache::edit::start_spanning_row().
1.63 albertel 748: &Apache::edit::editline('',$text,'',60);
1.20 matthew 749: } elsif ($target eq 'modified') {
1.42 matthew 750: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 751: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
1.4 matthew 752: }
1.1 matthew 753: return $result;
754: }
755:
756: sub end_xlabel {
757: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
758: my $result = '';
1.51 matthew 759: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 760: } elsif ($target eq 'edit') {
1.27 matthew 761: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 762: }
1.1 matthew 763: return $result;
764: }
1.21 matthew 765:
1.1 matthew 766: ##------------------------------------------------------------------- ylabel
767: sub start_ylabel {
768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
769: my $result='';
1.51 matthew 770: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 771: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.58 matthew 772: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1.49 matthew 773: $ylabel =~ s/\n/ /g;
1.32 matthew 774: if (length($ylabel) > $max_str_len) {
775: $ylabel = substr($ylabel,0,$max_str_len);
776: }
1.20 matthew 777: } elsif ($target eq 'edit') {
1.25 matthew 778: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.112 albertel 779: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.39 matthew 780: $result .= &Apache::edit::end_row().
781: &Apache::edit::start_spanning_row().
1.63 albertel 782: &Apache::edit::editline('',$text,'',60);
1.20 matthew 783: } elsif ($target eq 'modified') {
1.42 matthew 784: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 785: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
1.4 matthew 786: }
1.1 matthew 787: return $result;
788: }
789:
790: sub end_ylabel {
791: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
792: my $result = '';
1.51 matthew 793: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 794: } elsif ($target eq 'edit') {
1.27 matthew 795: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 796: }
1.1 matthew 797: return $result;
798: }
1.21 matthew 799:
1.1 matthew 800: ##------------------------------------------------------------------- label
801: sub start_label {
802: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
803: my $result='';
1.51 matthew 804: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 805: my %label;
806: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 807: $tagstack->[-1]);
1.112 albertel 808: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.58 matthew 809: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1.49 matthew 810: $text =~ s/\n/ /g;
1.32 matthew 811: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
812: $label{'text'} = $text;
1.17 matthew 813: push(@labels,\%label);
1.20 matthew 814: } elsif ($target eq 'edit') {
1.25 matthew 815: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 816: $result .= &edit_attributes($target,$token,\%label_defaults);
1.112 albertel 817: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.39 matthew 818: $result .= &Apache::edit::end_row().
819: &Apache::edit::start_spanning_row().
1.63 albertel 820: &Apache::edit::editline('',$text,'',60);
1.20 matthew 821: } elsif ($target eq 'modified') {
1.42 matthew 822: &Apache::edit::get_new_args
1.24 matthew 823: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 824: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 825: $result.=&Apache::edit::modifiedfield("/label",$parser);
1.4 matthew 826: }
1.1 matthew 827: return $result;
828: }
829:
830: sub end_label {
831: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
832: my $result = '';
1.51 matthew 833: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 834: } elsif ($target eq 'edit') {
1.21 matthew 835: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 836: }
1.1 matthew 837: return $result;
838: }
839:
840: ##------------------------------------------------------------------- curve
841: sub start_curve {
842: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
843: my $result='';
1.25 matthew 844: &Apache::lonxml::register('Apache::lonplot',('function','data'));
845: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 846: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 847: my %curve;
848: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 849: $tagstack->[-1]);
1.17 matthew 850: push (@curves,\%curve);
1.20 matthew 851: } elsif ($target eq 'edit') {
1.26 matthew 852: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.60 matthew 853: $result .= &edit_attributes($target,$token,\%curve_defaults,
854: \@curve_edit_order);
1.20 matthew 855: } elsif ($target eq 'modified') {
856: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 857: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 858: if ($constructtag) {
859: $result = &Apache::edit::rebuild_tag($token);
860: $result.= &Apache::edit::handle_insert();
861: }
1.4 matthew 862: }
1.1 matthew 863: return $result;
864: }
865:
866: sub end_curve {
867: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
868: my $result = '';
1.25 matthew 869: pop @Apache::lonxml::namespace;
870: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 871: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 872: } elsif ($target eq 'edit') {
1.21 matthew 873: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 874: }
1.1 matthew 875: return $result;
876: }
1.21 matthew 877:
1.1 matthew 878: ##------------------------------------------------------------ curve function
879: sub start_function {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
881: my $result='';
1.51 matthew 882: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 883: if (exists($curves[-1]->{'data'})) {
1.85 matthew 884: &Apache::lonxml::warning
885: ('Use of the <b>curve function</b> tag precludes use of '.
886: ' the <b>curve data</b> tag. '.
887: 'The curve data tag will be omitted in favor of the '.
888: 'curve function declaration.');
1.17 matthew 889: delete $curves[-1]->{'data'} ;
890: }
1.112 albertel 891: my $function = &Apache::lonxml::get_all_text("/function",$parser,
892: $style);
1.58 matthew 893: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
894: $curves[-1]->{'function'} = $function;
1.20 matthew 895: } elsif ($target eq 'edit') {
1.37 matthew 896: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.112 albertel 897: my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
1.39 matthew 898: $result .= &Apache::edit::end_row().
899: &Apache::edit::start_spanning_row().
1.63 albertel 900: &Apache::edit::editline('',$text,'',60);
1.20 matthew 901: } elsif ($target eq 'modified') {
1.42 matthew 902: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 903: $result.=&Apache::edit::modifiedfield("/function",$parser);
1.4 matthew 904: }
1.1 matthew 905: return $result;
906: }
907:
908: sub end_function {
909: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
910: my $result = '';
1.51 matthew 911: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 912: } elsif ($target eq 'edit') {
1.26 matthew 913: $result .= &Apache::edit::end_table();
1.4 matthew 914: }
1.1 matthew 915: return $result;
916: }
1.21 matthew 917:
1.1 matthew 918: ##------------------------------------------------------------ curve data
919: sub start_data {
920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
921: my $result='';
1.51 matthew 922: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 923: if (exists($curves[-1]->{'function'})) {
1.85 matthew 924: &Apache::lonxml::warning
925: ('Use of the <b>curve function</b> tag precludes use of '.
926: ' the <b>curve data</b> tag. '.
927: 'The curve function tag will be omitted in favor of the '.
928: 'curve data declaration.');
1.17 matthew 929: delete($curves[-1]->{'function'});
930: }
1.112 albertel 931: my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.58 matthew 932: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1.40 matthew 933: # Deal with cases where we're given an array...
934: if ($datatext =~ /^\@/) {
935: $datatext = &Apache::run::run('return "'.$datatext.'"',
936: $safeeval,1);
937: }
1.49 matthew 938: $datatext =~ s/\s+/ /g;
1.17 matthew 939: # Need to do some error checking on the @data array -
940: # make sure it's all numbers and make sure each array
941: # is of the same length.
942: my @data;
1.35 matthew 943: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 944: @data = split /,/,$datatext;
1.95 www 945: } else { # Assume it's space separated.
1.17 matthew 946: @data = split / /,$datatext;
947: }
948: for (my $i=0;$i<=$#data;$i++) {
949: # Check that it's non-empty
1.19 matthew 950: if (! defined($data[$i])) {
951: &Apache::lonxml::warning(
1.85 matthew 952: 'undefined curve data value. Replacing with '.
1.19 matthew 953: ' pi/e = 1.15572734979092');
954: $data[$i] = 1.15572734979092;
955: }
1.17 matthew 956: # Check that it's a number
1.19 matthew 957: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
958: &Apache::lonxml::warning(
1.85 matthew 959: 'Bad curve data value of '.$data[$i].' Replacing with '.
1.19 matthew 960: ' pi/e = 1.15572734979092');
961: $data[$i] = 1.15572734979092;
962: }
1.17 matthew 963: }
1.35 matthew 964: # complain if the number of data points is not the same as
965: # in previous sets of data.
1.36 matthew 966: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 967: &Apache::lonxml::warning
968: ('Number of data points is not consistent with previous '.
969: 'number of data points');
970: }
1.17 matthew 971: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 972: } elsif ($target eq 'edit') {
1.37 matthew 973: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.112 albertel 974: my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.39 matthew 975: $result .= &Apache::edit::end_row().
976: &Apache::edit::start_spanning_row().
1.63 albertel 977: &Apache::edit::editline('',$text,'',60);
1.20 matthew 978: } elsif ($target eq 'modified') {
1.42 matthew 979: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 980: $result.=&Apache::edit::modifiedfield("/data",$parser);
1.4 matthew 981: }
1.1 matthew 982: return $result;
983: }
984:
985: sub end_data {
986: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
987: my $result = '';
1.51 matthew 988: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 989: } elsif ($target eq 'edit') {
1.26 matthew 990: $result .= &Apache::edit::end_table();
1.4 matthew 991: }
1.1 matthew 992: return $result;
993: }
994:
995: ##------------------------------------------------------------------- axis
996: sub start_axis {
997: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
998: my $result='';
1.51 matthew 999: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1000: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
1001: $tagstack->[-1]);
1.20 matthew 1002: } elsif ($target eq 'edit') {
1.25 matthew 1003: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.65 matthew 1004: $result .= &edit_attributes($target,$token,\%axis_defaults,
1005: \@axis_edit_order);
1.20 matthew 1006: } elsif ($target eq 'modified') {
1.29 matthew 1007: my $constructtag=&Apache::edit::get_new_args
1008: ($token,$parstack,$safeeval,keys(%axis_defaults));
1009: if ($constructtag) {
1010: $result = &Apache::edit::rebuild_tag($token);
1011: }
1.4 matthew 1012: }
1.1 matthew 1013: return $result;
1014: }
1015:
1016: sub end_axis {
1017: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1018: my $result = '';
1.51 matthew 1019: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1020: } elsif ($target eq 'edit') {
1.21 matthew 1021: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 1022: } elsif ($target eq 'modified') {
1.4 matthew 1023: }
1.1 matthew 1024: return $result;
1025: }
1026:
1.21 matthew 1027: ###################################################################
1028: ## ##
1029: ## Utility Functions ##
1030: ## ##
1031: ###################################################################
1032:
1.13 matthew 1033: ##----------------------------------------------------------- set_defaults
1034: sub set_defaults {
1.21 matthew 1035: my ($var,$defaults) = @_;
1.13 matthew 1036: my $key;
1.24 matthew 1037: foreach $key (keys(%$defaults)) {
1.13 matthew 1038: $var->{$key} = $defaults->{$key}->{'default'};
1039: }
1040: }
1041:
1.1 matthew 1042: ##------------------------------------------------------------------- misc
1.2 matthew 1043: sub get_attributes{
1.21 matthew 1044: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 1045: foreach my $attr (keys(%{$defaults})) {
1.92 matthew 1046: if ($attr eq 'texwidth' || $attr eq 'texfont') {
1.86 albertel 1047: $values->{$attr} =
1048: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
1049: } else {
1050: $values->{$attr} =
1051: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1052: }
1.10 matthew 1053: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 1054: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 1055: next;
1056: }
1.10 matthew 1057: my $test = $defaults->{$attr}->{'test'};
1058: if (! &$test($values->{$attr})) {
1.6 matthew 1059: &Apache::lonxml::warning
1060: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 1061: .$defaults->{$attr}->{'default'} );
1062: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 1063: }
1.2 matthew 1064: }
1.11 matthew 1065: return ;
1.6 matthew 1066: }
1.40 matthew 1067:
1.15 matthew 1068: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 1069: sub write_gnuplot_file {
1.51 matthew 1070: my ($tmpdir,$filename,$target)= @_;
1.6 matthew 1071: my $gnuplot_input = '';
1.10 matthew 1072: my $curve;
1.107 foxr 1073: my $pt = $Apache::lonplot::plot{'texfont'};
1.100 matthew 1074: #
1075: # Check to be sure we do not have any empty curves
1076: my @curvescopy;
1077: foreach my $curve (@curves) {
1078: if (exists($curve->{'function'})) {
1079: if ($curve->{'function'} !~ /^\s*$/) {
1080: push(@curvescopy,$curve);
1081: }
1082: } elsif (exists($curve->{'data'})) {
1083: foreach my $data (@{$curve->{'data'}}) {
1084: if (scalar(@$data) > 0) {
1085: push(@curvescopy,$curve);
1086: last;
1087: }
1088: }
1089: }
1090: }
1091: @curves = @curvescopy;
1.6 matthew 1092: # Collect all the colors
1093: my @Colors;
1.107 foxr 1094: push @Colors, $Apache::lonplot::plot{'bgcolor'};
1095: push @Colors, $Apache::lonplot::plot{'fgcolor'};
1096: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
1.9 matthew 1097: foreach $curve (@curves) {
1098: push @Colors, ($curve->{'color'} ne '' ?
1099: $curve->{'color'} :
1.107 foxr 1100: $Apache::lonplot::plot{'fgcolor'} );
1.6 matthew 1101: }
1102: # set term
1.51 matthew 1103: if ($target eq 'web') {
1.103 matthew 1104: $gnuplot_input .= 'set term '.$weboutputformat .' ';
1.107 foxr 1105: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
1106: $gnuplot_input .= $Apache::lonplot::plot{'font'} . ' ';
1107: $gnuplot_input .= 'size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
1.51 matthew 1108: $gnuplot_input .= "@Colors\n";
1109: # set output
1110: $gnuplot_input .= "set output\n";
1111: } elsif ($target eq 'tex') {
1.107 foxr 1112: $gnuplot_input .= "set term postscript eps $Apache::lonplot::plot{'plotcolor'} solid \"Helvetica\" $pt \n";
1.68 sakharuk 1113: $gnuplot_input .= "set output \"/home/httpd/perl/tmp/".
1.113 ! www 1114: &unescape($filename).".eps\"\n";
1.87 matthew 1115: }
1116: # cartesian or polar?
1.107 foxr 1117: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
1.87 matthew 1118: $gnuplot_input .= 'set polar'.$/;
1119: } else {
1120: # Assume Cartesian
1.51 matthew 1121: }
1.110 albertel 1122: # solid or pattern for boxes?
1123: if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
1124: $gnuplot_input .= 'set style fill solid '.
1125: $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
1126: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
1127: $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
1128: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
1129: }
1.101 matthew 1130: # margin
1.107 foxr 1131: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
1132: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
1.101 matthew 1133: }
1.107 foxr 1134: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
1135: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
1.101 matthew 1136: }
1.107 foxr 1137: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
1138: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
1.101 matthew 1139: }
1.107 foxr 1140: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
1141: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
1.101 matthew 1142: }
1143: # tic scales
1144: $gnuplot_input .= 'set ticscale '.
1.107 foxr 1145: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1.110 albertel 1146: #boxwidth
1147: if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
1148: $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
1149: }
1150: # gridlayer
1151: $gnuplot_input .= 'set grid noxtics noytics front '.$/
1152: if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
1153:
1.7 matthew 1154: # grid
1.107 foxr 1155: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
1.7 matthew 1156: # border
1.107 foxr 1157: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
1.9 matthew 1158: 'set border'.$/ :
1.67 matthew 1159: 'set noborder'.$/ );
1.77 matthew 1160: # sampling rate for non-data curves
1.107 foxr 1161: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
1.67 matthew 1162: # title, xlabel, ylabel
1.45 matthew 1163: # titles
1.89 matthew 1164: if ($target eq 'tex') {
1.92 matthew 1165: $gnuplot_input .= "set title \"$title\" font \"Helvetica,".$pt."pt\"\n" if (defined($title)) ;
1166: $gnuplot_input .= "set xlabel \"$xlabel\" font \"Helvetica,".$pt."pt\" \n" if (defined($xlabel));
1167: $gnuplot_input .= "set ylabel \"$ylabel\" font \"Helvetica,".$pt."pt\"\n" if (defined($ylabel));
1.89 matthew 1168: } else {
1169: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1170: $gnuplot_input .= "set xlabel \"$xlabel\" \n" if (defined($xlabel));
1171: $gnuplot_input .= "set ylabel \"$ylabel\" \n" if (defined($ylabel));
1172: }
1.45 matthew 1173: # tics
1174: if (%xtics) {
1175: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 1176: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1177: $gnuplot_input .= "$xtics{'start'}, ";
1178: $gnuplot_input .= "$xtics{'increment'}, ";
1179: $gnuplot_input .= "$xtics{'end'}\n";
1.89 matthew 1180: if ($xtics{'minorfreq'} != 0) {
1181: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
1182: }
1.45 matthew 1183: }
1184: if (%ytics) {
1185: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 1186: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1187: $gnuplot_input .= "$ytics{'start'}, ";
1188: $gnuplot_input .= "$ytics{'increment'}, ";
1189: $gnuplot_input .= "$ytics{'end'}\n";
1.89 matthew 1190: if ($ytics{'minorfreq'} != 0) {
1191: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
1192: }
1.45 matthew 1193: }
1194: # axis
1.23 matthew 1195: if (%axis) {
1.13 matthew 1196: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1197: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 1198: }
1199: # Key
1.23 matthew 1200: if (%key) {
1.9 matthew 1201: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1202: if ($key{'title'} ne '') {
1.67 matthew 1203: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1.11 matthew 1204: }
1205: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 1206: } else {
1.9 matthew 1207: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 1208: }
1.6 matthew 1209: # labels
1.10 matthew 1210: my $label;
1.6 matthew 1211: foreach $label (@labels) {
1212: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.103 matthew 1213: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'};
1214: if ($target eq 'tex') {
1215: $gnuplot_input .=' font "Helvetica,'.$pt.'pt"' ;
1216: }
1217: $gnuplot_input .= $/;
1.6 matthew 1218: }
1.74 matthew 1219: if ($target eq 'tex') {
1.107 foxr 1220: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
1.74 matthew 1221: $gnuplot_input .="\n";
1222: }
1.6 matthew 1223: # curves
1224: $gnuplot_input .= 'plot ';
1.9 matthew 1225: for (my $i = 0;$i<=$#curves;$i++) {
1226: $curve = $curves[$i];
1227: $gnuplot_input.= ', ' if ($i > 0);
1.6 matthew 1228: if (exists($curve->{'function'})) {
1.9 matthew 1229: $gnuplot_input.=
1230: $curve->{'function'}.' title "'.
1231: $curve->{'name'}.'" with '.
1.72 matthew 1232: $curve->{'linestyle'};
1.73 sakharuk 1233: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1.60 matthew 1234: if (($curve->{'linestyle'} eq 'points') ||
1235: ($curve->{'linestyle'} eq 'linespoints') ||
1236: ($curve->{'linestyle'} eq 'errorbars') ||
1237: ($curve->{'linestyle'} eq 'xerrorbars') ||
1238: ($curve->{'linestyle'} eq 'yerrorbars') ||
1239: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1.62 matthew 1240: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1.60 matthew 1241: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1.110 albertel 1242: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1243: $gnuplot_input.= ' '.$curve->{'limit'};
1.60 matthew 1244: }
1.6 matthew 1245: } elsif (exists($curve->{'data'})) {
1.40 matthew 1246: # Store data values in $datatext
1247: my $datatext = '';
1248: # get new filename
1.70 matthew 1249: my $datafilename = "$tmpdir/$filename.data.$i";
1.40 matthew 1250: my $fh=Apache::File->new(">$datafilename");
1251: # Compile data
1.6 matthew 1252: my @Data = @{$curve->{'data'}};
1.9 matthew 1253: my @Data0 = @{$Data[0]};
1254: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1255: my $dataset;
1.6 matthew 1256: foreach $dataset (@Data) {
1.9 matthew 1257: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1258: }
1.9 matthew 1259: $datatext .= $/;
1.6 matthew 1260: }
1.40 matthew 1261: # write file
1262: print $fh $datatext;
1263: close ($fh);
1264: # generate gnuplot text
1265: $gnuplot_input.= '"'.$datafilename.'" title "'.
1266: $curve->{'name'}.'" with '.
1267: $curve->{'linestyle'};
1.73 sakharuk 1268: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1.62 matthew 1269: if (($curve->{'linestyle'} eq 'points') ||
1270: ($curve->{'linestyle'} eq 'linespoints') ||
1271: ($curve->{'linestyle'} eq 'errorbars') ||
1272: ($curve->{'linestyle'} eq 'xerrorbars') ||
1273: ($curve->{'linestyle'} eq 'yerrorbars') ||
1274: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1275: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1276: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1.110 albertel 1277: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1278: $gnuplot_input.= ' '.$curve->{'limit'};
1.62 matthew 1279: }
1.6 matthew 1280: }
1281: }
1.40 matthew 1282: # Write the output to a file.
1.70 matthew 1283: my $fh=Apache::File->new(">$tmpdir$filename.data");
1.40 matthew 1284: print $fh $gnuplot_input;
1285: close($fh);
1286: # That's all folks.
1287: return ;
1.2 matthew 1288: }
1.21 matthew 1289:
1290: #---------------------------------------------- check_inputs
1291: sub check_inputs {
1292: ## Note: no inputs, no outputs - this acts only on global variables.
1293: ## Make sure we have all the input we need:
1.107 foxr 1294: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
1.23 matthew 1295: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1296: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1297: if (! defined($title )) {} # No title for this plot, thats okay
1298: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1299: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1300: if ($#labels < 0) { } # No labels for this plot, thats okay
1301: if ($#curves < 0) {
1302: &Apache::lonxml::warning("No curves specified for plot!!!!");
1303: return '';
1304: }
1305: my $curve;
1306: foreach $curve (@curves) {
1307: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1.85 matthew 1308: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1.21 matthew 1309: return '';
1310: }
1311: }
1312: }
1313:
1.20 matthew 1314: #------------------------------------------------ make_edit
1315: sub edit_attributes {
1.34 matthew 1316: my ($target,$token,$defaults,$keys) = @_;
1317: my ($result,@keys);
1318: if ($keys && ref($keys) eq 'ARRAY') {
1319: @keys = @$keys;
1320: } else {
1321: @keys = sort(keys(%$defaults));
1322: }
1323: foreach my $attr (@keys) {
1.35 matthew 1324: # append a ' ' to the description if it doesn't have one already.
1325: my $description = $defaults->{$attr}->{'description'};
1326: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1327: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1328: $result .= &Apache::edit::text_arg
1.38 matthew 1329: ($description,$attr,$token,
1330: $defaults->{$attr}->{'size'});
1.20 matthew 1331: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.102 albertel 1332: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 1333: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1334: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.102 albertel 1335: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 1336: ($description,$attr,['on','off'],$token);
1.20 matthew 1337: }
1.25 matthew 1338: $result .= '<br />';
1.20 matthew 1339: }
1340: return $result;
1341: }
1.1 matthew 1342:
1.21 matthew 1343:
1344: ###################################################################
1345: ## ##
1346: ## Insertion functions for editing plots ##
1347: ## ##
1348: ###################################################################
1349:
1.47 matthew 1350: sub insert_gnuplot {
1.29 matthew 1351: my $result = '';
1.20 matthew 1352: # plot attributes
1.61 matthew 1353: $result .= "\n<gnuplot ";
1.47 matthew 1354: foreach my $attr (keys(%gnuplot_defaults)) {
1.61 matthew 1355: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1.20 matthew 1356: }
1.61 matthew 1357: $result .= ">";
1.47 matthew 1358: # Add the components (most are commented out for simplicity)
1.44 matthew 1359: # $result .= &insert_key();
1360: # $result .= &insert_axis();
1361: # $result .= &insert_title();
1362: # $result .= &insert_xlabel();
1363: # $result .= &insert_ylabel();
1.20 matthew 1364: $result .= &insert_curve();
1.50 matthew 1365: # close up the <gnuplot>
1.61 matthew 1366: $result .= "\n</gnuplot>";
1.45 matthew 1367: return $result;
1368: }
1369:
1.46 matthew 1370: sub insert_tics {
1371: my $result;
1372: $result .= &insert_xtics() . &insert_ytics;
1373: return $result;
1374: }
1375:
1.45 matthew 1376: sub insert_xtics {
1377: my $result;
1.46 matthew 1378: $result .= "\n <xtics ";
1.45 matthew 1379: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1380: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1381: }
1.61 matthew 1382: $result .= "/>";
1.45 matthew 1383: return $result;
1384: }
1385:
1386: sub insert_ytics {
1387: my $result;
1.46 matthew 1388: $result .= "\n <ytics ";
1.45 matthew 1389: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1390: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1391: }
1.61 matthew 1392: $result .= "/>";
1.20 matthew 1393: return $result;
1394: }
1395:
1396: sub insert_key {
1397: my $result;
1.61 matthew 1398: $result .= "\n <key ";
1.30 matthew 1399: foreach my $attr (keys(%key_defaults)) {
1.61 matthew 1400: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1.20 matthew 1401: }
1.61 matthew 1402: $result .= " />";
1.20 matthew 1403: return $result;
1404: }
1405:
1406: sub insert_axis{
1407: my $result;
1.46 matthew 1408: $result .= "\n <axis ";
1.30 matthew 1409: foreach my $attr (keys(%axis_defaults)) {
1.61 matthew 1410: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1.20 matthew 1411: }
1.61 matthew 1412: $result .= " />";
1.20 matthew 1413: return $result;
1414: }
1.28 matthew 1415:
1.61 matthew 1416: sub insert_title { return "\n <title></title>"; }
1417: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1418: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1.20 matthew 1419:
1420: sub insert_label {
1421: my $result;
1.46 matthew 1422: $result .= "\n <label ";
1.30 matthew 1423: foreach my $attr (keys(%label_defaults)) {
1.61 matthew 1424: $result .= "\n $attr=\"".
1425: $label_defaults{$attr}->{'default'}."\"";
1.20 matthew 1426: }
1.61 matthew 1427: $result .= "></label>";
1.20 matthew 1428: return $result;
1429: }
1430:
1431: sub insert_curve {
1432: my $result;
1.41 matthew 1433: $result .= "\n <curve ";
1.30 matthew 1434: foreach my $attr (keys(%curve_defaults)) {
1.61 matthew 1435: $result .= "\n $attr=\"".
1436: $curve_defaults{$attr}->{'default'}."\"";
1.20 matthew 1437: }
1.61 matthew 1438: $result .= " >";
1439: $result .= &insert_data().&insert_data()."\n </curve>";
1.20 matthew 1440: }
1.4 matthew 1441:
1.20 matthew 1442: sub insert_function {
1443: my $result;
1.61 matthew 1444: $result .= "\n <function></function>";
1.20 matthew 1445: return $result;
1446: }
1.4 matthew 1447:
1.20 matthew 1448: sub insert_data {
1449: my $result;
1.61 matthew 1450: $result .= "\n <data></data>";
1.20 matthew 1451: return $result;
1452: }
1.4 matthew 1453:
1.48 matthew 1454: ##----------------------------------------------------------------------
1.20 matthew 1455: 1;
1456: __END__
1.4 matthew 1457:
1458:
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