Annotation of loncom/xml/lonplot.pm, revision 1.77
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.77 ! matthew 4: # $Id: lonplot.pm,v 1.76 2002/05/01 15:58:42 matthew 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: #
1.3 matthew 28: # 12/15/01 Matthew
1.31 matthew 29: # 12/17 12/18 12/19 12/20 12/21 12/27 12/28 12/30 12/31 Matthew
30: # 01/01/02 Matthew
1.35 matthew 31: # 01/02 01/03 01/04 01/07 01/08 01/09 Matthew
1.52 matthew 32: # 01/21 02/05 02/06 2/28Matthew
1.35 matthew 33:
1.1 matthew 34: package Apache::lonplot;
1.10 matthew 35:
1.1 matthew 36: use strict;
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;
1.10 matthew 41:
1.33 harris41 42: BEGIN {
1.47 matthew 43: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
1.1 matthew 44: }
45:
1.10 matthew 46: ##
47: ## Description of data structures:
48: ##
49: ## %plot %key %axis
50: ## --------------------------
51: ## height title color
52: ## width box xmin
53: ## bgcolor pos xmax
54: ## fgcolor ymin
55: ## transparent ymax
56: ## grid
57: ## border
58: ## font
1.19 matthew 59: ## align
1.10 matthew 60: ##
61: ## @labels: $labels[$i] = \%label
62: ## %label: text, xpos, ypos, justify
1.14 matthew 63: ##
1.10 matthew 64: ## @curves: $curves[$i] = \%curve
1.14 matthew 65: ## %curve: name, linestyle, ( function | data )
1.10 matthew 66: ##
67: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
68: ## [y1,y2,y3,y4] ]
69: ##
1.21 matthew 70:
71: ###################################################################
72: ## ##
73: ## Tests used in checking the validitity of input ##
74: ## ##
75: ###################################################################
1.29 matthew 76:
1.32 matthew 77: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
78: # is longer than this, it will be truncated.
79:
1.29 matthew 80: my %linestyles =
81: (
82: lines => 2, # Maybe this will be used in the future
83: linespoints => 2, # to check on whether or not they have
84: dots => 2, # supplied enough <data></data> fields
85: points => 2, # to use the given line style. But for
86: steps => 2, # now there are more important things
87: fsteps => 2, # for me to deal with.
88: histeps => 2,
1.34 matthew 89: errorbars => 3,
90: xerrorbars => [3,4],
91: yerrorbars => [3,4],
1.35 matthew 92: xyerrorbars => [4,6],
1.34 matthew 93: boxes => 3,
1.35 matthew 94: vector => 4
1.29 matthew 95: );
96:
1.11 matthew 97: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 98: my $real_test =
99: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.62 matthew 100: my $pos_real_test =
101: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
1.11 matthew 102: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/};
1.1 matthew 103: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 104: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.1 matthew 105: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
1.29 matthew 106: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.67 matthew 107: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
1.21 matthew 108:
109: ###################################################################
110: ## ##
111: ## Attribute metadata ##
112: ## ##
113: ###################################################################
1.47 matthew 114: my @gnuplot_edit_order =
1.77 ! matthew 115: qw/alttag bgcolor fgcolor height width font transparent grid samples border align/;
1.48 matthew 116:
117: my $gnuplot_help_text = <<"ENDPLOTHELP";
118: <p>
119: The <b>gnuplot</b> tag allows an author to design a plot which can
120: be created on the fly. This is intended for use in homework problems
121: where each student needs to see a distinct plot. It can be used in
122: conjunction with a <b>script</b> tag to generate random plots.
123: </p><p>
124: A <b>gnuplot</b> tag can contain the following sub-tags:
125: </p>
126: <dl>
127: <dt> Plot Label
128: <dd> Allows you to place text at a given (x,y) coordinate on the plot.
129: <dt> Plot Title
130: <dd> The title of the plot
131: <dt> Plot Xlabel
132: <dd> The label on the horizontal axis of the plot
133: <dt> Plot Ylabel
134: <dd> The label on the vertical axis of the plot
135: <dt> Plot Axes
136: <dd> allows specification of the x and y ranges displayed in the plot
137: <dt> Plot Key
138: <dd> Lists the functions displayed in the plot.
139: <dt> Plot Curve
140: <dd> Sets the data used in the plot.
141: <dt> Plot Tics
142: <dd> Allows specification of the x and y coordinate 'tics' on the axes.
143: This is mostly used to adjust the grid lines when a grid is displayed.
144: </dl>
1.55 matthew 145: If you are having trouble with your plot, please read the help
146: available on Plot Curve.
1.48 matthew 147: ENDPLOTHELP
148:
1.47 matthew 149: my %gnuplot_defaults =
1.1 matthew 150: (
1.64 matthew 151: alttag => {
152: default => 'dynamically generated plot',
153: test => $words_test,
154: description => 'brief description of the plot',
155: edit_type => 'entry',
156: size => '40'
157: },
1.20 matthew 158: height => {
1.65 matthew 159: default => 300,
1.20 matthew 160: test => $int_test,
1.29 matthew 161: description => 'height of image (pixels)',
1.38 matthew 162: edit_type => 'entry',
163: size => '10'
1.20 matthew 164: },
165: width => {
1.65 matthew 166: default => 400,
1.20 matthew 167: test => $int_test,
1.29 matthew 168: description => 'width of image (pixels)',
1.38 matthew 169: edit_type => 'entry',
170: size => '10'
1.20 matthew 171: },
172: bgcolor => {
173: default => 'xffffff',
174: test => $color_test,
175: description => 'background color of image (xffffff)',
1.38 matthew 176: edit_type => 'entry',
177: size => '10'
1.20 matthew 178: },
179: fgcolor => {
180: default => 'x000000',
181: test => $color_test,
182: description => 'foreground color of image (x000000)',
1.38 matthew 183: edit_type => 'entry',
184: size => '10'
1.20 matthew 185: },
186: transparent => {
187: default => 'off',
188: test => $onoff_test,
1.34 matthew 189: description => 'Transparent image',
1.45 matthew 190: edit_type => 'onoff'
1.20 matthew 191: },
192: grid => {
1.65 matthew 193: default => 'on',
1.20 matthew 194: test => $onoff_test,
1.34 matthew 195: description => 'Display grid',
1.45 matthew 196: edit_type => 'onoff'
1.20 matthew 197: },
198: border => {
199: default => 'on',
200: test => $onoff_test,
1.34 matthew 201: description => 'Draw border around plot',
1.45 matthew 202: edit_type => 'onoff'
1.20 matthew 203: },
204: font => {
205: default => 'medium',
206: test => $sml_test,
207: description => 'Size of font to use',
208: edit_type => 'choice',
209: choices => ['small','medium','large']
210: },
1.77 ! matthew 211: samples => {
! 212: default => '100',
! 213: test => $int_test,
! 214: description => 'Number of samples for non-data plots',
! 215: edit_type => 'choice',
! 216: choices => ['100','200','500','1000','2000','5000']
! 217: },
1.20 matthew 218: align => {
1.65 matthew 219: default => 'center',
1.20 matthew 220: test => sub {$_[0]=~/^(left|right|center)$/},
221: description => 'alignment for image in html',
222: edit_type => 'choice',
223: choices => ['left','right','center']
224: }
1.1 matthew 225: );
226:
227: my %key_defaults =
228: (
1.20 matthew 229: title => {
230: default => '',
231: test => $words_test,
232: description => 'Title of key',
1.38 matthew 233: edit_type => 'entry',
234: size => '40'
1.20 matthew 235: },
236: box => {
237: default => 'off',
238: test => $onoff_test,
239: description => 'Draw a box around the key?',
1.45 matthew 240: edit_type => 'onoff'
1.20 matthew 241: },
242: pos => {
243: default => 'top right',
244: test => $key_pos_test,
245: description => 'position of the key on the plot',
246: edit_type => 'choice',
247: choices => ['top left','top right','bottom left','bottom right',
248: 'outside','below']
249: }
1.1 matthew 250: );
251:
252: my %label_defaults =
253: (
1.20 matthew 254: xpos => {
255: default => 0,
256: test => $real_test,
257: description => 'x position of label (graph coordinates)',
1.38 matthew 258: edit_type => 'entry',
259: size => '10'
1.20 matthew 260: },
261: ypos => {
262: default => 0,
263: test => $real_test,
264: description => 'y position of label (graph coordinates)',
1.38 matthew 265: edit_type => 'entry',
266: size => '10'
1.20 matthew 267: },
268: justify => {
269: default => 'left',
270: test => sub {$_[0]=~/^(left|right|center)$/},
271: description => 'justification of the label text on the plot',
272: edit_type => 'choice',
273: choices => ['left','right','center']
274: }
1.1 matthew 275: );
276:
1.45 matthew 277: my @tic_edit_order = ('location','mirror','start','increment','end');
278: my %tic_defaults =
279: (
280: location => {
281: default => 'border',
282: test => sub {$_[0]=~/^(border|axis)$/},
283: description => 'Location of tick marks',
284: edit_type => 'choice',
285: choices => ['border','axis']
286: },
287: mirror => {
288: default => 'on',
289: test => $onoff_test,
290: description => 'mirror ticks on opposite axis?',
291: edit_type => 'onoff'
292: },
293: start => {
294: default => '-10.0',
295: test => $real_test,
296: description => 'Start ticks at',
297: edit_type => 'entry',
298: size => '10'
299: },
300: increment => {
301: default => '1.0',
302: test => $real_test,
303: description => 'Place a tick every',
304: edit_type => 'entry',
305: size => '10'
306: },
307: end => {
308: default => ' 10.0',
309: test => $real_test,
310: description => 'Stop ticks at ',
311: edit_type => 'entry',
312: size => '10'
313: },
314: );
315:
1.65 matthew 316: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax');
1.1 matthew 317: my %axis_defaults =
318: (
1.28 matthew 319: color => {
1.20 matthew 320: default => 'x000000',
321: test => $color_test,
322: description => 'color of axes (x000000)',
1.38 matthew 323: edit_type => 'entry',
324: size => '10'
1.20 matthew 325: },
326: xmin => {
327: default => '-10.0',
328: test => $real_test,
329: description => 'minimum x-value shown in plot',
1.38 matthew 330: edit_type => 'entry',
331: size => '10'
1.20 matthew 332: },
333: xmax => {
334: default => ' 10.0',
335: test => $real_test,
336: description => 'maximum x-value shown in plot',
1.38 matthew 337: edit_type => 'entry',
338: size => '10'
1.20 matthew 339: },
340: ymin => {
341: default => '-10.0',
342: test => $real_test,
343: description => 'minimum y-value shown in plot',
1.38 matthew 344: edit_type => 'entry',
345: size => '10'
1.20 matthew 346: },
347: ymax => {
348: default => ' 10.0',
349: test => $real_test,
350: description => 'maximum y-value shown in plot',
1.38 matthew 351: edit_type => 'entry',
352: size => '10'
1.20 matthew 353: }
1.1 matthew 354: );
355:
1.48 matthew 356: my $curve_help_text = <<"ENDCURVEHELP";
357: The <b>curve</b> tag is where you set the data to be plotted by gnuplot.
358: There are two ways of entering the information:
359: <dl>
360: <dt> Curve Data
361: <dd> Using a <b>data</b> tag you can specify the numbers used to produce
362: the plot.
363: <p>
364: By default, two <b>data</b> tags will be available in a plot. The
365: first will specify X coordinates of the data and the second will
366: give the Y coordinates of the data. When working with a linestyle that
367: requires more than two data sets, inserting another <b>data</b> tag is
368: required. Unfortunately, you must make sure the <b>data</b> tags appear
369: in the order gnuplot expects the data.
370: </p><p>
371: Specifying the data should usually be done with a perl variable or array,
372: such as \@Xdata and \@Ydata. You may also specify numerical data seperated
373: by commas. Again, the order of the <b>data</b> tags is important. The
374: first tag will be the X data and the second will be the Y data.
375: </p>
376: <dt> Curve Function
377: <dd> The <b>function</b> tag allows you to specify the curve to be
1.57 matthew 378: plotted as a formula that gnuplot can understand. <b>Be careful using this
379: tag.</b> It is surprisingly easy to give gnuplot a function it cannot deal
1.48 matthew 380: with properly. Be explicit: 2*sin(2*3.141592*x/4) will work but
381: 2sin(2*3.141592x/4) will not. If you do not receive any errors in the
382: gnuplot data but still do not have an image produced, it is likely there
383: is an error in your <b>function</b> tag.
384: </dl>
385: ENDCURVEHELP
386:
1.62 matthew 387: my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize');
1.60 matthew 388:
1.1 matthew 389: my %curve_defaults =
390: (
1.20 matthew 391: color => {
392: default => 'x000000',
393: test => $color_test,
394: description => 'color of curve (x000000)',
1.38 matthew 395: edit_type => 'entry',
396: size => '10'
1.20 matthew 397: },
398: name => {
399: default => '',
400: test => $words_test,
401: description => 'name of curve to appear in key',
1.38 matthew 402: edit_type => 'entry',
403: size => '20'
1.20 matthew 404: },
405: linestyle => {
406: default => 'lines',
407: test => $linestyle_test,
1.35 matthew 408: description => 'Line style',
1.20 matthew 409: edit_type => 'choice',
1.38 matthew 410: choices => [keys(%linestyles)]
1.60 matthew 411: },
412: # gnuplots term=gif driver does not handle linewidth :(
413: # linewidth => {
414: # default => 1,
415: # test => $int_test,
416: # description => 'Line width (may not apply to all line styles)',
417: # edit_type => 'choice',
418: # choices => [1,2,3,4,5,6,7,8,9,10]
419: # },
420: pointsize => {
421: default => 1,
1.62 matthew 422: test => $pos_real_test,
423: description => 'point size (may not apply to all line styles)',
424: edit_type => 'entry',
425: size => '5'
426: },
427: pointtype => {
428: default => 1,
1.60 matthew 429: test => $int_test,
1.62 matthew 430: description => 'point type (may not apply to all line styles)',
1.60 matthew 431: edit_type => 'choice',
1.62 matthew 432: choices => [0,1,2,3,4,5,6]
1.60 matthew 433: }
1.1 matthew 434: );
435:
1.21 matthew 436: ###################################################################
437: ## ##
438: ## parsing and edit rendering ##
439: ## ##
440: ###################################################################
1.45 matthew 441: my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 442:
1.47 matthew 443: sub start_gnuplot {
1.23 matthew 444: %plot = (); %key = (); %axis = ();
1.10 matthew 445: $title = undef; $xlabel = undef; $ylabel = undef;
446: $#labels = -1; $#curves = -1;
1.45 matthew 447: %xtics = (); %ytics = ();
1.6 matthew 448: #
1.1 matthew 449: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
450: my $result='';
1.25 matthew 451: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 452: ('title','xlabel','ylabel','key','axis','label','curve',
453: 'xtics','ytics'));
1.29 matthew 454: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 455: if ($target eq 'web' || $target eq 'tex') {
1.47 matthew 456: &get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 457: $tagstack->[-1]);
1.20 matthew 458: } elsif ($target eq 'edit') {
1.47 matthew 459: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
1.48 matthew 460: $result .= &make_javascript();
461: $result .= &help_win($gnuplot_help_text);
1.47 matthew 462: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
463: \@gnuplot_edit_order);
1.20 matthew 464: } elsif ($target eq 'modified') {
465: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 466: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.20 matthew 467: if ($constructtag) {
468: $result = &Apache::edit::rebuild_tag($token);
469: }
1.4 matthew 470: }
1.21 matthew 471: return $result;
1.1 matthew 472: }
473:
1.47 matthew 474: sub end_gnuplot {
1.1 matthew 475: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
476: pop @Apache::lonxml::namespace;
1.4 matthew 477: &Apache::lonxml::deregister('Apache::lonplot',
478: ('title','xlabel','ylabel','key','axis','label','curve'));
479: my $result = '';
1.56 albertel 480: my $randnumber;
481: # need to call rand everytime start_script would evaluate, as the
482: # safe space rand number generator and the global rand generator
483: # are not seperate
484: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
485: $target eq 'answer') {
486: $randnumber=int(rand(1000));
487: }
1.51 matthew 488: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 489: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 490: ##
491: ## Determine filename
1.4 matthew 492: my $tmpdir = '/home/httpd/perl/tmp/';
1.12 matthew 493: my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1.69 matthew 494: '_'.time.'_'.$$.$randnumber.'_plot';
1.4 matthew 495: ## Write the plot description to the file
1.51 matthew 496: &write_gnuplot_file($tmpdir,$filename,$target);
1.54 matthew 497: $filename = &Apache::lonnet::escape($filename);
1.4 matthew 498: ## return image tag for the plot
1.51 matthew 499: if ($target eq 'web') {
500: $result .= <<"ENDIMAGE";
1.69 matthew 501: <img src = "/cgi-bin/plot.gif?file=$filename.data&output=gif"
1.64 matthew 502: width = "$plot{'width'}"
1.16 matthew 503: height = "$plot{'height'}"
504: align = "$plot{'align'}"
1.64 matthew 505: alt = "$plot{'alttag'}" />
1.12 matthew 506: ENDIMAGE
1.51 matthew 507: } elsif ($target eq 'tex') {
1.71 matthew 508: &Apache::lonnet::ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
1.73 sakharuk 509: $result = '\graphicspath{{/home/httpd/perl/tmp/}}\fbox{\includegraphics{'.&Apache::lonnet::unescape($filename).'.eps}}';
1.51 matthew 510: }
1.20 matthew 511: } elsif ($target eq 'edit') {
1.21 matthew 512: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 513: }
1.1 matthew 514: return $result;
515: }
1.2 matthew 516:
1.45 matthew 517:
518: ##--------------------------------------------------------------- xtics
519: sub start_xtics {
520: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
521: my $result='';
1.51 matthew 522: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 523: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
524: $tagstack->[-1]);
525: } elsif ($target eq 'edit') {
526: $result .= &Apache::edit::tag_start($target,$token,'xtics');
527: $result .= &edit_attributes($target,$token,\%tic_defaults,
528: \@tic_edit_order);
529: } elsif ($target eq 'modified') {
530: my $constructtag=&Apache::edit::get_new_args
531: ($token,$parstack,$safeeval,keys(%tic_defaults));
532: if ($constructtag) {
533: $result = &Apache::edit::rebuild_tag($token);
534: }
535: }
536: return $result;
537: }
538:
539: sub end_xtics {
540: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
541: my $result = '';
1.51 matthew 542: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 543: } elsif ($target eq 'edit') {
544: $result.=&Apache::edit::tag_end($target,$token);
545: }
546: return $result;
547: }
548:
549: ##--------------------------------------------------------------- ytics
550: sub start_ytics {
551: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
552: my $result='';
1.51 matthew 553: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 554: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
555: $tagstack->[-1]);
556: } elsif ($target eq 'edit') {
557: $result .= &Apache::edit::tag_start($target,$token,'ytics');
558: $result .= &edit_attributes($target,$token,\%tic_defaults,
559: \@tic_edit_order);
560: } elsif ($target eq 'modified') {
561: my $constructtag=&Apache::edit::get_new_args
562: ($token,$parstack,$safeeval,keys(%tic_defaults));
563: if ($constructtag) {
564: $result = &Apache::edit::rebuild_tag($token);
565: }
566: }
567: return $result;
568: }
569:
570: sub end_ytics {
571: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
572: my $result = '';
1.51 matthew 573: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 574: } elsif ($target eq 'edit') {
575: $result.=&Apache::edit::tag_end($target,$token);
576: }
577: return $result;
578: }
579:
580:
1.1 matthew 581: ##----------------------------------------------------------------- key
582: sub start_key {
583: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
584: my $result='';
1.51 matthew 585: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 586: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 587: $tagstack->[-1]);
1.20 matthew 588: } elsif ($target eq 'edit') {
1.25 matthew 589: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 590: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 591: } elsif ($target eq 'modified') {
592: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 593: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 594: if ($constructtag) {
595: $result = &Apache::edit::rebuild_tag($token);
596: }
1.4 matthew 597: }
1.1 matthew 598: return $result;
599: }
600:
601: sub end_key {
602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
603: my $result = '';
1.51 matthew 604: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 605: } elsif ($target eq 'edit') {
1.21 matthew 606: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 607: }
1.1 matthew 608: return $result;
609: }
1.21 matthew 610:
1.1 matthew 611: ##------------------------------------------------------------------- title
612: sub start_title {
613: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
614: my $result='';
1.51 matthew 615: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 616: $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.58 matthew 617: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1.49 matthew 618: $title =~ s/\n/ /g;
1.32 matthew 619: if (length($title) > $max_str_len) {
620: $title = substr($title,0,$max_str_len);
621: }
1.20 matthew 622: } elsif ($target eq 'edit') {
1.25 matthew 623: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.22 matthew 624: my $text=&Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.39 matthew 625: $result.=&Apache::edit::end_row().
626: &Apache::edit::start_spanning_row().
1.63 albertel 627: &Apache::edit::editline('',$text,'',60);
1.20 matthew 628: } elsif ($target eq 'modified') {
1.29 matthew 629: my $text=$$parser[-1]->get_text("/title");
1.42 matthew 630: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 631: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 632: }
1.1 matthew 633: return $result;
634: }
635:
636: sub end_title {
637: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
638: my $result = '';
1.51 matthew 639: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 640: } elsif ($target eq 'edit') {
1.27 matthew 641: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 642: }
1.1 matthew 643: return $result;
644: }
645: ##------------------------------------------------------------------- xlabel
646: sub start_xlabel {
647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
648: my $result='';
1.51 matthew 649: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 650: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.58 matthew 651: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1.49 matthew 652: $xlabel =~ s/\n/ /g;
1.32 matthew 653: if (length($xlabel) > $max_str_len) {
654: $xlabel = substr($xlabel,0,$max_str_len);
655: }
1.20 matthew 656: } elsif ($target eq 'edit') {
1.25 matthew 657: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.22 matthew 658: my $text=&Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.39 matthew 659: $result.=&Apache::edit::end_row().
660: &Apache::edit::start_spanning_row().
1.63 albertel 661: &Apache::edit::editline('',$text,'',60);
1.20 matthew 662: } elsif ($target eq 'modified') {
1.29 matthew 663: my $text=$$parser[-1]->get_text("/xlabel");
1.42 matthew 664: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 665: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 666: }
1.1 matthew 667: return $result;
668: }
669:
670: sub end_xlabel {
671: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
672: my $result = '';
1.51 matthew 673: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 674: } elsif ($target eq 'edit') {
1.27 matthew 675: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 676: }
1.1 matthew 677: return $result;
678: }
1.21 matthew 679:
1.1 matthew 680: ##------------------------------------------------------------------- ylabel
681: sub start_ylabel {
682: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
683: my $result='';
1.51 matthew 684: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 685: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.58 matthew 686: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1.49 matthew 687: $ylabel =~ s/\n/ /g;
1.32 matthew 688: if (length($ylabel) > $max_str_len) {
689: $ylabel = substr($ylabel,0,$max_str_len);
690: }
1.20 matthew 691: } elsif ($target eq 'edit') {
1.25 matthew 692: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.22 matthew 693: my $text = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.39 matthew 694: $result .= &Apache::edit::end_row().
695: &Apache::edit::start_spanning_row().
1.63 albertel 696: &Apache::edit::editline('',$text,'',60);
1.20 matthew 697: } elsif ($target eq 'modified') {
1.29 matthew 698: my $text=$$parser[-1]->get_text("/ylabel");
1.42 matthew 699: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 700: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 701: }
1.1 matthew 702: return $result;
703: }
704:
705: sub end_ylabel {
706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
707: my $result = '';
1.51 matthew 708: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 709: } elsif ($target eq 'edit') {
1.27 matthew 710: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 711: }
1.1 matthew 712: return $result;
713: }
1.21 matthew 714:
1.1 matthew 715: ##------------------------------------------------------------------- label
716: sub start_label {
717: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
718: my $result='';
1.51 matthew 719: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 720: my %label;
721: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 722: $tagstack->[-1]);
1.32 matthew 723: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.58 matthew 724: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1.49 matthew 725: $text =~ s/\n/ /g;
1.32 matthew 726: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
727: $label{'text'} = $text;
1.17 matthew 728: push(@labels,\%label);
1.20 matthew 729: } elsif ($target eq 'edit') {
1.25 matthew 730: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 731: $result .= &edit_attributes($target,$token,\%label_defaults);
1.22 matthew 732: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.39 matthew 733: $result .= &Apache::edit::end_row().
734: &Apache::edit::start_spanning_row().
1.63 albertel 735: &Apache::edit::editline('',$text,'',60);
1.20 matthew 736: } elsif ($target eq 'modified') {
1.42 matthew 737: &Apache::edit::get_new_args
1.24 matthew 738: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 739: $result.=&Apache::edit::rebuild_tag($token);
1.22 matthew 740: my $text=$$parser[-1]->get_text("/label");
1.21 matthew 741: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 742: }
1.1 matthew 743: return $result;
744: }
745:
746: sub end_label {
747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
748: my $result = '';
1.51 matthew 749: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 750: } elsif ($target eq 'edit') {
1.21 matthew 751: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 752: }
1.1 matthew 753: return $result;
754: }
755:
756: ##------------------------------------------------------------------- curve
757: sub start_curve {
758: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
759: my $result='';
1.25 matthew 760: &Apache::lonxml::register('Apache::lonplot',('function','data'));
761: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 762: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 763: my %curve;
764: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 765: $tagstack->[-1]);
1.17 matthew 766: push (@curves,\%curve);
1.20 matthew 767: } elsif ($target eq 'edit') {
1.26 matthew 768: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.48 matthew 769: $result .= &help_win($curve_help_text);
1.60 matthew 770: $result .= &edit_attributes($target,$token,\%curve_defaults,
771: \@curve_edit_order);
1.20 matthew 772: } elsif ($target eq 'modified') {
773: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 774: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 775: if ($constructtag) {
776: $result = &Apache::edit::rebuild_tag($token);
777: $result.= &Apache::edit::handle_insert();
778: }
1.4 matthew 779: }
1.1 matthew 780: return $result;
781: }
782:
783: sub end_curve {
784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
785: my $result = '';
1.25 matthew 786: pop @Apache::lonxml::namespace;
787: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 788: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 789: } elsif ($target eq 'edit') {
1.21 matthew 790: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 791: }
1.1 matthew 792: return $result;
793: }
1.21 matthew 794:
1.1 matthew 795: ##------------------------------------------------------------ curve function
796: sub start_function {
797: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
798: my $result='';
1.51 matthew 799: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 800: if (exists($curves[-1]->{'data'})) {
801: &Apache::lonxml::warning('Use of <function> precludes use of <data>. The <data> will be omitted in favor of the <function> declaration.');
802: delete $curves[-1]->{'data'} ;
803: }
1.58 matthew 804: my $function = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
805: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
806: $curves[-1]->{'function'} = $function;
1.20 matthew 807: } elsif ($target eq 'edit') {
1.37 matthew 808: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.22 matthew 809: my $text = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
1.39 matthew 810: $result .= &Apache::edit::end_row().
811: &Apache::edit::start_spanning_row().
1.63 albertel 812: &Apache::edit::editline('',$text,'',60);
1.20 matthew 813: } elsif ($target eq 'modified') {
1.42 matthew 814: $result.=&Apache::edit::rebuild_tag($token);
1.20 matthew 815: my $text=$$parser[-1]->get_text("/function");
816: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 817: }
1.1 matthew 818: return $result;
819: }
820:
821: sub end_function {
822: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
823: my $result = '';
1.51 matthew 824: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 825: } elsif ($target eq 'edit') {
1.26 matthew 826: $result .= &Apache::edit::end_table();
1.4 matthew 827: }
1.1 matthew 828: return $result;
829: }
1.21 matthew 830:
1.1 matthew 831: ##------------------------------------------------------------ curve data
832: sub start_data {
833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
834: my $result='';
1.51 matthew 835: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 836: if (exists($curves[-1]->{'function'})) {
837: &Apache::lonxml::warning('Use of <data> precludes use of .'.
838: '<function>. The <function> will be omitted in favor of '.
839: 'the <data> declaration.');
840: delete($curves[-1]->{'function'});
841: }
842: my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.58 matthew 843: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1.40 matthew 844: # Deal with cases where we're given an array...
845: if ($datatext =~ /^\@/) {
846: $datatext = &Apache::run::run('return "'.$datatext.'"',
847: $safeeval,1);
848: }
1.49 matthew 849: $datatext =~ s/\s+/ /g;
1.17 matthew 850: # Need to do some error checking on the @data array -
851: # make sure it's all numbers and make sure each array
852: # is of the same length.
853: my @data;
1.35 matthew 854: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 855: @data = split /,/,$datatext;
856: } else { # Assume it's space seperated.
857: @data = split / /,$datatext;
858: }
859: for (my $i=0;$i<=$#data;$i++) {
860: # Check that it's non-empty
1.19 matthew 861: if (! defined($data[$i])) {
862: &Apache::lonxml::warning(
863: 'undefined <data> value. Replacing with '.
864: ' pi/e = 1.15572734979092');
865: $data[$i] = 1.15572734979092;
866: }
1.17 matthew 867: # Check that it's a number
1.19 matthew 868: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
869: &Apache::lonxml::warning(
870: 'Bad <data> value of '.$data[$i].' Replacing with '.
871: ' pi/e = 1.15572734979092');
872: $data[$i] = 1.15572734979092;
873: }
1.17 matthew 874: }
1.35 matthew 875: # complain if the number of data points is not the same as
876: # in previous sets of data.
1.36 matthew 877: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 878: &Apache::lonxml::warning
879: ('Number of data points is not consistent with previous '.
880: 'number of data points');
881: }
1.17 matthew 882: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 883: } elsif ($target eq 'edit') {
1.37 matthew 884: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.22 matthew 885: my $text = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.39 matthew 886: $result .= &Apache::edit::end_row().
887: &Apache::edit::start_spanning_row().
1.63 albertel 888: &Apache::edit::editline('',$text,'',60);
1.20 matthew 889: } elsif ($target eq 'modified') {
1.42 matthew 890: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 891: my $text=$$parser[-1]->get_text("/data");
892: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 893: }
1.1 matthew 894: return $result;
895: }
896:
897: sub end_data {
898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
899: my $result = '';
1.51 matthew 900: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 901: } elsif ($target eq 'edit') {
1.26 matthew 902: $result .= &Apache::edit::end_table();
1.4 matthew 903: }
1.1 matthew 904: return $result;
905: }
906:
907: ##------------------------------------------------------------------- axis
908: sub start_axis {
909: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
910: my $result='';
1.51 matthew 911: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 912: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
913: $tagstack->[-1]);
1.20 matthew 914: } elsif ($target eq 'edit') {
1.25 matthew 915: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.65 matthew 916: $result .= &edit_attributes($target,$token,\%axis_defaults,
917: \@axis_edit_order);
1.20 matthew 918: } elsif ($target eq 'modified') {
1.29 matthew 919: my $constructtag=&Apache::edit::get_new_args
920: ($token,$parstack,$safeeval,keys(%axis_defaults));
921: if ($constructtag) {
922: $result = &Apache::edit::rebuild_tag($token);
923: }
1.4 matthew 924: }
1.1 matthew 925: return $result;
926: }
927:
928: sub end_axis {
929: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
930: my $result = '';
1.51 matthew 931: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 932: } elsif ($target eq 'edit') {
1.21 matthew 933: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 934: } elsif ($target eq 'modified') {
1.4 matthew 935: }
1.1 matthew 936: return $result;
937: }
938:
1.21 matthew 939: ###################################################################
940: ## ##
941: ## Utility Functions ##
942: ## ##
943: ###################################################################
944:
1.13 matthew 945: ##----------------------------------------------------------- set_defaults
946: sub set_defaults {
1.21 matthew 947: my ($var,$defaults) = @_;
1.13 matthew 948: my $key;
1.24 matthew 949: foreach $key (keys(%$defaults)) {
1.13 matthew 950: $var->{$key} = $defaults->{$key}->{'default'};
951: }
952: }
953:
1.1 matthew 954: ##------------------------------------------------------------------- misc
1.2 matthew 955: sub get_attributes{
1.21 matthew 956: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 957: foreach my $attr (keys(%{$defaults})) {
1.10 matthew 958: $values->{$attr} =
1.15 matthew 959: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1.10 matthew 960: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 961: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 962: next;
963: }
1.10 matthew 964: my $test = $defaults->{$attr}->{'test'};
965: if (! &$test($values->{$attr})) {
1.6 matthew 966: &Apache::lonxml::warning
967: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 968: .$defaults->{$attr}->{'default'} );
969: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 970: }
1.2 matthew 971: }
1.11 matthew 972: return ;
1.6 matthew 973: }
1.40 matthew 974:
1.15 matthew 975: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 976: sub write_gnuplot_file {
1.51 matthew 977: my ($tmpdir,$filename,$target)= @_;
1.6 matthew 978: my $gnuplot_input = '';
1.10 matthew 979: my $curve;
1.6 matthew 980: # Collect all the colors
981: my @Colors;
982: push @Colors, $plot{'bgcolor'};
983: push @Colors, $plot{'fgcolor'};
1.13 matthew 984: push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
1.9 matthew 985: foreach $curve (@curves) {
986: push @Colors, ($curve->{'color'} ne '' ?
987: $curve->{'color'} :
1.13 matthew 988: $plot{'fgcolor'} );
1.6 matthew 989: }
990: # set term
1.51 matthew 991: if ($target eq 'web') {
992: $gnuplot_input .= 'set term gif ';
993: $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
994: $gnuplot_input .= $plot{'font'} . ' ';
995: $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
996: $gnuplot_input .= "@Colors\n";
997: # set output
998: $gnuplot_input .= "set output\n";
999: } elsif ($target eq 'tex') {
1.74 matthew 1000: $gnuplot_input .= "set term postscript eps monochrome solid\n";
1.68 sakharuk 1001: $gnuplot_input .= "set output \"/home/httpd/perl/tmp/".
1002: &Apache::lonnet::unescape($filename).".eps\"\n";
1.51 matthew 1003: }
1.7 matthew 1004: # grid
1.10 matthew 1005: $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
1.7 matthew 1006: # border
1.9 matthew 1007: $gnuplot_input .= ($plot{'border'} eq 'on'?
1008: 'set border'.$/ :
1.67 matthew 1009: 'set noborder'.$/ );
1.77 ! matthew 1010: # sampling rate for non-data curves
! 1011: $gnuplot_input .= "set samples $plot{'samples'}\n";
1.67 matthew 1012: # title, xlabel, ylabel
1.45 matthew 1013: # titles
1.13 matthew 1014: $gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ;
1015: $gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel));
1016: $gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel));
1.45 matthew 1017: # tics
1018: if (%xtics) {
1019: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 1020: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1021: $gnuplot_input .= "$xtics{'start'}, ";
1022: $gnuplot_input .= "$xtics{'increment'}, ";
1023: $gnuplot_input .= "$xtics{'end'}\n";
1024: }
1025: if (%ytics) {
1026: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 1027: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1028: $gnuplot_input .= "$ytics{'start'}, ";
1029: $gnuplot_input .= "$ytics{'increment'}, ";
1030: $gnuplot_input .= "$ytics{'end'}\n";
1031: }
1032: # axis
1.23 matthew 1033: if (%axis) {
1.13 matthew 1034: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1035: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 1036: }
1037: # Key
1.23 matthew 1038: if (%key) {
1.9 matthew 1039: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1040: if ($key{'title'} ne '') {
1.67 matthew 1041: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1.11 matthew 1042: }
1043: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 1044: } else {
1.9 matthew 1045: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 1046: }
1.6 matthew 1047: # labels
1.10 matthew 1048: my $label;
1.6 matthew 1049: foreach $label (@labels) {
1050: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.9 matthew 1051: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ;
1.6 matthew 1052: }
1.74 matthew 1053: if ($target eq 'tex') {
1.76 matthew 1054: $gnuplot_input .="set size 1,".$plot{'height'}/$plot{'width'}*1.38;
1.74 matthew 1055: $gnuplot_input .="\n";
1056: }
1.6 matthew 1057: # curves
1058: $gnuplot_input .= 'plot ';
1.9 matthew 1059: for (my $i = 0;$i<=$#curves;$i++) {
1060: $curve = $curves[$i];
1061: $gnuplot_input.= ', ' if ($i > 0);
1.6 matthew 1062: if (exists($curve->{'function'})) {
1.9 matthew 1063: $gnuplot_input.=
1064: $curve->{'function'}.' title "'.
1065: $curve->{'name'}.'" with '.
1.72 matthew 1066: $curve->{'linestyle'};
1.73 sakharuk 1067: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1.60 matthew 1068: if (($curve->{'linestyle'} eq 'points') ||
1069: ($curve->{'linestyle'} eq 'linespoints') ||
1070: ($curve->{'linestyle'} eq 'errorbars') ||
1071: ($curve->{'linestyle'} eq 'xerrorbars') ||
1072: ($curve->{'linestyle'} eq 'yerrorbars') ||
1073: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1.62 matthew 1074: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1.60 matthew 1075: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1076: }
1.6 matthew 1077: } elsif (exists($curve->{'data'})) {
1.40 matthew 1078: # Store data values in $datatext
1079: my $datatext = '';
1080: # get new filename
1.70 matthew 1081: my $datafilename = "$tmpdir/$filename.data.$i";
1.40 matthew 1082: my $fh=Apache::File->new(">$datafilename");
1083: # Compile data
1.6 matthew 1084: my @Data = @{$curve->{'data'}};
1.9 matthew 1085: my @Data0 = @{$Data[0]};
1086: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1087: my $dataset;
1.6 matthew 1088: foreach $dataset (@Data) {
1.9 matthew 1089: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1090: }
1.9 matthew 1091: $datatext .= $/;
1.6 matthew 1092: }
1.40 matthew 1093: # write file
1094: print $fh $datatext;
1095: close ($fh);
1096: # generate gnuplot text
1097: $gnuplot_input.= '"'.$datafilename.'" title "'.
1098: $curve->{'name'}.'" with '.
1099: $curve->{'linestyle'};
1.73 sakharuk 1100: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1.62 matthew 1101: if (($curve->{'linestyle'} eq 'points') ||
1102: ($curve->{'linestyle'} eq 'linespoints') ||
1103: ($curve->{'linestyle'} eq 'errorbars') ||
1104: ($curve->{'linestyle'} eq 'xerrorbars') ||
1105: ($curve->{'linestyle'} eq 'yerrorbars') ||
1106: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1107: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1108: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1109: }
1.6 matthew 1110: }
1111: }
1.40 matthew 1112: # Write the output to a file.
1.70 matthew 1113: my $fh=Apache::File->new(">$tmpdir$filename.data");
1.40 matthew 1114: print $fh $gnuplot_input;
1115: close($fh);
1116: # That's all folks.
1117: return ;
1.2 matthew 1118: }
1.21 matthew 1119:
1120: #---------------------------------------------- check_inputs
1121: sub check_inputs {
1122: ## Note: no inputs, no outputs - this acts only on global variables.
1123: ## Make sure we have all the input we need:
1.47 matthew 1124: if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); }
1.23 matthew 1125: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1126: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1127: if (! defined($title )) {} # No title for this plot, thats okay
1128: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1129: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1130: if ($#labels < 0) { } # No labels for this plot, thats okay
1131: if ($#curves < 0) {
1132: &Apache::lonxml::warning("No curves specified for plot!!!!");
1133: return '';
1134: }
1135: my $curve;
1136: foreach $curve (@curves) {
1137: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1138: &Apache::lonxml::warning("One of the curves specified did not contain any <data> or <function> declarations\n");
1139: return '';
1140: }
1141: }
1142: }
1143:
1.20 matthew 1144: #------------------------------------------------ make_edit
1145: sub edit_attributes {
1.34 matthew 1146: my ($target,$token,$defaults,$keys) = @_;
1147: my ($result,@keys);
1148: if ($keys && ref($keys) eq 'ARRAY') {
1149: @keys = @$keys;
1150: } else {
1151: @keys = sort(keys(%$defaults));
1152: }
1153: foreach my $attr (@keys) {
1.35 matthew 1154: # append a ' ' to the description if it doesn't have one already.
1155: my $description = $defaults->{$attr}->{'description'};
1156: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1157: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1158: $result .= &Apache::edit::text_arg
1.38 matthew 1159: ($description,$attr,$token,
1160: $defaults->{$attr}->{'size'});
1.20 matthew 1161: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.35 matthew 1162: $result .= &Apache::edit::select_arg
1163: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1164: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.35 matthew 1165: $result .= &Apache::edit::select_arg
1166: ($description,$attr,['on','off'],$token);
1.20 matthew 1167: }
1.25 matthew 1168: $result .= '<br />';
1.20 matthew 1169: }
1170: return $result;
1171: }
1.1 matthew 1172:
1.21 matthew 1173:
1174: ###################################################################
1175: ## ##
1176: ## Insertion functions for editing plots ##
1177: ## ##
1178: ###################################################################
1179:
1.47 matthew 1180: sub insert_gnuplot {
1.29 matthew 1181: my $result = '';
1.20 matthew 1182: # plot attributes
1.61 matthew 1183: $result .= "\n<gnuplot ";
1.47 matthew 1184: foreach my $attr (keys(%gnuplot_defaults)) {
1.61 matthew 1185: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1.20 matthew 1186: }
1.61 matthew 1187: $result .= ">";
1.47 matthew 1188: # Add the components (most are commented out for simplicity)
1.44 matthew 1189: # $result .= &insert_key();
1190: # $result .= &insert_axis();
1191: # $result .= &insert_title();
1192: # $result .= &insert_xlabel();
1193: # $result .= &insert_ylabel();
1.20 matthew 1194: $result .= &insert_curve();
1.50 matthew 1195: # close up the <gnuplot>
1.61 matthew 1196: $result .= "\n</gnuplot>";
1.45 matthew 1197: return $result;
1198: }
1199:
1.46 matthew 1200: sub insert_tics {
1201: my $result;
1202: $result .= &insert_xtics() . &insert_ytics;
1203: return $result;
1204: }
1205:
1.45 matthew 1206: sub insert_xtics {
1207: my $result;
1.46 matthew 1208: $result .= "\n <xtics ";
1.45 matthew 1209: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1210: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1211: }
1.61 matthew 1212: $result .= "/>";
1.45 matthew 1213: return $result;
1214: }
1215:
1216: sub insert_ytics {
1217: my $result;
1.46 matthew 1218: $result .= "\n <ytics ";
1.45 matthew 1219: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1220: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1221: }
1.61 matthew 1222: $result .= "/>";
1.20 matthew 1223: return $result;
1224: }
1225:
1226: sub insert_key {
1227: my $result;
1.61 matthew 1228: $result .= "\n <key ";
1.30 matthew 1229: foreach my $attr (keys(%key_defaults)) {
1.61 matthew 1230: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1.20 matthew 1231: }
1.61 matthew 1232: $result .= " />";
1.20 matthew 1233: return $result;
1234: }
1235:
1236: sub insert_axis{
1237: my $result;
1.46 matthew 1238: $result .= "\n <axis ";
1.30 matthew 1239: foreach my $attr (keys(%axis_defaults)) {
1.61 matthew 1240: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1.20 matthew 1241: }
1.61 matthew 1242: $result .= " />";
1.20 matthew 1243: return $result;
1244: }
1.28 matthew 1245:
1.61 matthew 1246: sub insert_title { return "\n <title></title>"; }
1247: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1248: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1.20 matthew 1249:
1250: sub insert_label {
1251: my $result;
1.46 matthew 1252: $result .= "\n <label ";
1.30 matthew 1253: foreach my $attr (keys(%label_defaults)) {
1.61 matthew 1254: $result .= "\n $attr=\"".
1255: $label_defaults{$attr}->{'default'}."\"";
1.20 matthew 1256: }
1.61 matthew 1257: $result .= "></label>";
1.20 matthew 1258: return $result;
1259: }
1260:
1261: sub insert_curve {
1262: my $result;
1.41 matthew 1263: $result .= "\n <curve ";
1.30 matthew 1264: foreach my $attr (keys(%curve_defaults)) {
1.61 matthew 1265: $result .= "\n $attr=\"".
1266: $curve_defaults{$attr}->{'default'}."\"";
1.20 matthew 1267: }
1.61 matthew 1268: $result .= " >";
1269: $result .= &insert_data().&insert_data()."\n </curve>";
1.20 matthew 1270: }
1.4 matthew 1271:
1.20 matthew 1272: sub insert_function {
1273: my $result;
1.61 matthew 1274: $result .= "\n <function></function>";
1.20 matthew 1275: return $result;
1276: }
1.4 matthew 1277:
1.20 matthew 1278: sub insert_data {
1279: my $result;
1.61 matthew 1280: $result .= "\n <data></data>";
1.20 matthew 1281: return $result;
1282: }
1.4 matthew 1283:
1.48 matthew 1284: ##----------------------------------------------------------------------
1285: # Javascript functions to display help for tags
1286:
1287: sub make_javascript {
1288: my $helpwindowwidth = 400;
1289: my $helpwindowheight = 400;
1290: my $result = '';
1291: $result.=<<"ENDFUNCTION";
1292: <script language="JavaScript">
1293: function openWin(text)
1294: {
1295: newWin = open("", "new_W", "width=$helpwindowwidth,height=$helpwindowheight,resizable=1,scrollbars=1");
1296: newWin.document.open("text/html", "replace");
1297: newWin.document.writeln(text);
1298: newWin.document.writeln('<center><a href=\"javascript:window.close()\">close this window</a></center>');
1299: newWin.document.close();
1300: }
1301: </script>
1302: ENDFUNCTION
1303: return $result;
1304: }
1305:
1306: sub help_win {
1307: my ($helptext)=@_;
1308: $helptext =~ s/\n/ /g;
1309: $helptext =~ s/\'/\\\'/g;
1310: my $result = '';
1311: $result.=<<"ENDWIN";
1312: <table width="100%"><tr><td align="right">
1313: <a href="javascript:openWin('$helptext')">help</a>
1314: </td></tr></table><hr />
1315: ENDWIN
1316: return $result;
1317: }
1.21 matthew 1318: ##----------------------------------------------------------------------
1.20 matthew 1319: 1;
1320: __END__
1.4 matthew 1321:
1322:
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