1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
4: # $Id: lonplot.pm,v 1.107 2005/05/16 21:58:41 foxr Exp $
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: #
28:
29: package Apache::lonplot;
30:
31: use strict;
32: use warnings FATAL=>'all';
33: no warnings 'uninitialized';
34: use Apache::File;
35: use Apache::response;
36: use Apache::lonxml;
37: use Apache::edit;
38: use Apache::lonnet;
39:
40: use vars qw/$weboutputformat $versionstring/;
41:
42: BEGIN {
43: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
44: #
45: # Determine the version of GNUPLOT
46: $weboutputformat = 'gif';
47: $versionstring = `gnuplot --version 2>/dev/null`;
48: if ($versionstring =~ /^gnuplot 4/) {
49: $weboutputformat = 'png';
50: }
51: }
52:
53: ##
54: ## Description of data structures:
55: ##
56: ## %plot %key %axis
57: ## --------------------------
58: ## height title color
59: ## width box xmin
60: ## bgcolor pos xmax
61: ## fgcolor ymin
62: ## transparent ymax
63: ## grid
64: ## border
65: ## font
66: ## align
67: ##
68: ## @labels: $labels[$i] = \%label
69: ## %label: text, xpos, ypos, justify
70: ##
71: ## @curves: $curves[$i] = \%curve
72: ## %curve: name, linestyle, ( function | data )
73: ##
74: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
75: ## [y1,y2,y3,y4] ]
76: ##
77:
78: ###################################################################
79: ## ##
80: ## Tests used in checking the validitity of input ##
81: ## ##
82: ###################################################################
83:
84: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
85: # is longer than this, it will be truncated.
86:
87: my %linestyles =
88: (
89: lines => 2, # Maybe this will be used in the future
90: linespoints => 2, # to check on whether or not they have
91: dots => 2, # supplied enough <data></data> fields
92: points => 2, # to use the given line style. But for
93: steps => 2, # now there are more important things
94: fsteps => 2, # for me to deal with.
95: histeps => 2,
96: errorbars => 3,
97: xerrorbars => [3,4],
98: yerrorbars => [3,4],
99: xyerrorbars => [4,6],
100: boxes => 3,
101: vector => 4
102: );
103:
104: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
105: my $real_test =
106: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
107: my $pos_real_test =
108: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
109: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
110: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
111: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
112: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
113: my $linestyle_test = sub {exists($linestyles{$_[0]})};
114: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
115:
116: ###################################################################
117: ## ##
118: ## Attribute metadata ##
119: ## ##
120: ###################################################################
121: my @gnuplot_edit_order =
122: qw/alttag bgcolor fgcolor height width font transparent grid samples
123: border align texwidth texfont plotcolor plottype lmargin rmargin tmargin
124: bmargin major_ticscale minor_ticscale/;
125:
126: my $margin_choices = ['default',0..20];
127:
128: my %gnuplot_defaults =
129: (
130: alttag => {
131: default => 'dynamically generated plot',
132: test => $words_test,
133: description => 'brief description of the plot',
134: edit_type => 'entry',
135: size => '40'
136: },
137: height => {
138: default => 300,
139: test => $int_test,
140: description => 'height of image (pixels)',
141: edit_type => 'entry',
142: size => '10'
143: },
144: width => {
145: default => 400,
146: test => $int_test,
147: description => 'width of image (pixels)',
148: edit_type => 'entry',
149: size => '10'
150: },
151: bgcolor => {
152: default => 'xffffff',
153: test => $color_test,
154: description => 'background color of image (xffffff)',
155: edit_type => 'entry',
156: size => '10'
157: },
158: fgcolor => {
159: default => 'x000000',
160: test => $color_test,
161: description => 'foreground color of image (x000000)',
162: edit_type => 'entry',
163: size => '10'
164: },
165: transparent => {
166: default => 'off',
167: test => $onoff_test,
168: description => 'Transparent image',
169: edit_type => 'onoff'
170: },
171: grid => {
172: default => 'on',
173: test => $onoff_test,
174: description => 'Display grid',
175: edit_type => 'onoff'
176: },
177: border => {
178: default => 'on',
179: test => $onoff_test,
180: description => 'Draw border around plot',
181: edit_type => 'onoff'
182: },
183: font => {
184: default => 'medium',
185: test => $sml_test,
186: description => 'Size of font to use',
187: edit_type => 'choice',
188: choices => ['small','medium','large']
189: },
190: samples => {
191: default => '100',
192: test => $int_test,
193: description => 'Number of samples for non-data plots',
194: edit_type => 'choice',
195: choices => ['100','200','500','1000','2000','5000']
196: },
197: align => {
198: default => 'center',
199: test => sub {$_[0]=~/^(left|right|center)$/},
200: description => 'alignment for image in html',
201: edit_type => 'choice',
202: choices => ['left','right','center']
203: },
204: texwidth => {
205: default => '93',
206: test => $int_test,
207: description => 'Width of plot when printed (mm)',
208: edit_type => 'entry',
209: size => '5'
210: },
211: texfont => {
212: default => '22',
213: test => $int_test,
214: description => 'Font size to use in TeX output (pts):',
215: edit_type => 'choice',
216: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
217: },
218: plotcolor => {
219: default => 'monochrome',
220: test => sub {$_[0]=~/^(monochrome|color|colour)$/},
221: description => 'Color setting for printing:',
222: edit_type => 'choice',
223: choices => [qw/monochrome color colour/],
224: },
225: plottype => {
226: default => 'Cartesian',
227: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
228: description => 'Plot type:',
229: edit_type => 'choice',
230: choices => ['Cartesian','Polar']
231: },
232: lmargin => {
233: default => 'default',
234: test => sub {$_[0]=~/^(default|\d+)$/},
235: description => 'Left margin width (pts):',
236: edit_type => 'choice',
237: choices => $margin_choices,
238: },
239: rmargin => {
240: default => 'default',
241: test => sub {$_[0]=~/^(default|\d+)$/},
242: description => 'Right margin width (pts):',
243: edit_type => 'choice',
244: choices => $margin_choices,
245: },
246: tmargin => {
247: default => 'default',
248: test => sub {$_[0]=~/^(default|\d+)$/},
249: description => 'Top margin width (pts):',
250: edit_type => 'choice',
251: choices => $margin_choices,
252: },
253: bmargin => {
254: default => 'default',
255: test => sub {$_[0]=~/^(default|\d+)$/},
256: description => 'Bottom margin width (pts):',
257: edit_type => 'choice',
258: choices => $margin_choices,
259: },
260: major_ticscale => {
261: default => '1',
262: test => $real_test,
263: description => 'Size of major tic marks (plot coordinates)',
264: edit_type => 'entry',
265: size => '5'
266: },
267: minor_ticscale => {
268: default => '0.5',
269: test => $real_test,
270: description => 'Size of minor tic mark (plot coordinates)',
271: edit_type => 'entry',
272: size => '5'
273: },
274: );
275:
276: my %key_defaults =
277: (
278: title => {
279: default => '',
280: test => $words_test,
281: description => 'Title of key',
282: edit_type => 'entry',
283: size => '40'
284: },
285: box => {
286: default => 'off',
287: test => $onoff_test,
288: description => 'Draw a box around the key?',
289: edit_type => 'onoff'
290: },
291: pos => {
292: default => 'top right',
293: test => $key_pos_test,
294: description => 'position of the key on the plot',
295: edit_type => 'choice',
296: choices => ['top left','top right','bottom left','bottom right',
297: 'outside','below']
298: }
299: );
300:
301: my %label_defaults =
302: (
303: xpos => {
304: default => 0,
305: test => $real_test,
306: description => 'x position of label (graph coordinates)',
307: edit_type => 'entry',
308: size => '10'
309: },
310: ypos => {
311: default => 0,
312: test => $real_test,
313: description => 'y position of label (graph coordinates)',
314: edit_type => 'entry',
315: size => '10'
316: },
317: justify => {
318: default => 'left',
319: test => sub {$_[0]=~/^(left|right|center)$/},
320: description => 'justification of the label text on the plot',
321: edit_type => 'choice',
322: choices => ['left','right','center']
323: }
324: );
325:
326: my @tic_edit_order = ('location','mirror','start','increment','end',
327: 'minorfreq');
328: my %tic_defaults =
329: (
330: location => {
331: default => 'border',
332: test => sub {$_[0]=~/^(border|axis)$/},
333: description => 'Location of major tic marks',
334: edit_type => 'choice',
335: choices => ['border','axis']
336: },
337: mirror => {
338: default => 'on',
339: test => $onoff_test,
340: description => 'mirror tics on opposite axis?',
341: edit_type => 'onoff'
342: },
343: start => {
344: default => '-10.0',
345: test => $real_test,
346: description => 'Start major tics at',
347: edit_type => 'entry',
348: size => '10'
349: },
350: increment => {
351: default => '1.0',
352: test => $real_test,
353: description => 'Place a major tic every',
354: edit_type => 'entry',
355: size => '10'
356: },
357: end => {
358: default => ' 10.0',
359: test => $real_test,
360: description => 'Stop major tics at ',
361: edit_type => 'entry',
362: size => '10'
363: },
364: minorfreq => {
365: default => '0',
366: test => $int_test,
367: description => 'Number of minor tics per major tic mark',
368: edit_type => 'entry',
369: size => '10'
370: },
371: );
372:
373: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax');
374: my %axis_defaults =
375: (
376: color => {
377: default => 'x000000',
378: test => $color_test,
379: description => 'color of grid lines (x000000)',
380: edit_type => 'entry',
381: size => '10'
382: },
383: xmin => {
384: default => '-10.0',
385: test => $real_test,
386: description => 'minimum x-value shown in plot',
387: edit_type => 'entry',
388: size => '10'
389: },
390: xmax => {
391: default => ' 10.0',
392: test => $real_test,
393: description => 'maximum x-value shown in plot',
394: edit_type => 'entry',
395: size => '10'
396: },
397: ymin => {
398: default => '-10.0',
399: test => $real_test,
400: description => 'minimum y-value shown in plot',
401: edit_type => 'entry',
402: size => '10'
403: },
404: ymax => {
405: default => ' 10.0',
406: test => $real_test,
407: description => 'maximum y-value shown in plot',
408: edit_type => 'entry',
409: size => '10'
410: }
411: );
412:
413: my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize');
414:
415: my %curve_defaults =
416: (
417: color => {
418: default => 'x000000',
419: test => $color_test,
420: description => 'color of curve (x000000)',
421: edit_type => 'entry',
422: size => '10'
423: },
424: name => {
425: default => '',
426: test => $words_test,
427: description => 'name of curve to appear in key',
428: edit_type => 'entry',
429: size => '20'
430: },
431: linestyle => {
432: default => 'lines',
433: test => $linestyle_test,
434: description => 'Line style',
435: edit_type => 'choice',
436: choices => [keys(%linestyles)]
437: },
438: # gnuplots term=gif driver does not handle linewidth :(
439: # linewidth => {
440: # default => 1,
441: # test => $int_test,
442: # description => 'Line width (may not apply to all line styles)',
443: # edit_type => 'choice',
444: # choices => [1,2,3,4,5,6,7,8,9,10]
445: # },
446: pointsize => {
447: default => 1,
448: test => $pos_real_test,
449: description => 'point size (may not apply to all line styles)',
450: edit_type => 'entry',
451: size => '5'
452: },
453: pointtype => {
454: default => 1,
455: test => $int_test,
456: description => 'point type (may not apply to all line styles)',
457: edit_type => 'choice',
458: choices => [0,1,2,3,4,5,6]
459: }
460: );
461:
462: ###################################################################
463: ## ##
464: ## parsing and edit rendering ##
465: ## ##
466: ###################################################################
467:
468: undef %Apache::lonplot::plot;
469: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
470:
471: sub start_gnuplot {
472: undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
473: undef($title); undef($xlabel); undef($ylabel);
474: undef(@labels); undef(@curves);
475: undef(%xtics); undef(%ytics);
476: #
477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
478: my $result='';
479: &Apache::lonxml::register('Apache::lonplot',
480: ('title','xlabel','ylabel','key','axis','label','curve',
481: 'xtics','ytics'));
482: push (@Apache::lonxml::namespace,'lonplot');
483: if ($target eq 'web' || $target eq 'tex') {
484: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
485: $tagstack->[-1]);
486: } elsif ($target eq 'edit') {
487: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
488: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
489: \@gnuplot_edit_order);
490: } elsif ($target eq 'modified') {
491: my $constructtag=&Apache::edit::get_new_args
492: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
493: if ($constructtag) {
494: $result = &Apache::edit::rebuild_tag($token);
495: }
496: }
497: return $result;
498: }
499:
500: sub end_gnuplot {
501: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
502: pop @Apache::lonxml::namespace;
503: &Apache::lonxml::deregister('Apache::lonplot',
504: ('title','xlabel','ylabel','key','axis','label','curve'));
505: my $result = '';
506: my $randnumber;
507: # need to call rand everytime start_script would evaluate, as the
508: # safe space rand number generator and the global rand generator
509: # are not separate
510: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
511: $target eq 'answer') {
512: $randnumber=int(rand(1000));
513: }
514: if ($target eq 'web' || $target eq 'tex') {
515: &check_inputs(); # Make sure we have all the data we need
516: ##
517: ## Determine filename
518: my $tmpdir = '/home/httpd/perl/tmp/';
519: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
520: '_'.time.'_'.$$.$randnumber.'_plot';
521: ## Write the plot description to the file
522: &write_gnuplot_file($tmpdir,$filename,$target);
523: $filename = &Apache::lonnet::escape($filename);
524: ## return image tag for the plot
525: if ($target eq 'web') {
526: $result .= <<"ENDIMAGE";
527: <img src = "/cgi-bin/plot.gif?file=$filename.data&output=$weboutputformat"
528: width = "$Apache::lonplot::plot{'width'}"
529: height = "$Apache::lonplot::plot{'height'}"
530: align = "$Apache::lonplot::plot{'align'}"
531: alt = "$Apache::lonplot::plot{'alttag'}" />
532: ENDIMAGE
533: } elsif ($target eq 'tex') {
534: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
535: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
536: #might be inside the safe space, register the URL for later
537: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
538: $result = '\graphicspath{{/home/httpd/perl/tmp/}}\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&Apache::lonnet::unescape($filename).'.eps}';
539: }
540: } elsif ($target eq 'edit') {
541: $result.=&Apache::edit::tag_end($target,$token);
542: }
543: return $result;
544: }
545:
546:
547: ##--------------------------------------------------------------- xtics
548: sub start_xtics {
549: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
550: my $result='';
551: if ($target eq 'web' || $target eq 'tex') {
552: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
553: $tagstack->[-1]);
554: } elsif ($target eq 'edit') {
555: $result .= &Apache::edit::tag_start($target,$token,'xtics');
556: $result .= &edit_attributes($target,$token,\%tic_defaults,
557: \@tic_edit_order);
558: } elsif ($target eq 'modified') {
559: my $constructtag=&Apache::edit::get_new_args
560: ($token,$parstack,$safeeval,keys(%tic_defaults));
561: if ($constructtag) {
562: $result = &Apache::edit::rebuild_tag($token);
563: }
564: }
565: return $result;
566: }
567:
568: sub end_xtics {
569: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
570: my $result = '';
571: if ($target eq 'web' || $target eq 'tex') {
572: } elsif ($target eq 'edit') {
573: $result.=&Apache::edit::tag_end($target,$token);
574: }
575: return $result;
576: }
577:
578: ##--------------------------------------------------------------- ytics
579: sub start_ytics {
580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
581: my $result='';
582: if ($target eq 'web' || $target eq 'tex') {
583: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
584: $tagstack->[-1]);
585: } elsif ($target eq 'edit') {
586: $result .= &Apache::edit::tag_start($target,$token,'ytics');
587: $result .= &edit_attributes($target,$token,\%tic_defaults,
588: \@tic_edit_order);
589: } elsif ($target eq 'modified') {
590: my $constructtag=&Apache::edit::get_new_args
591: ($token,$parstack,$safeeval,keys(%tic_defaults));
592: if ($constructtag) {
593: $result = &Apache::edit::rebuild_tag($token);
594: }
595: }
596: return $result;
597: }
598:
599: sub end_ytics {
600: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
601: my $result = '';
602: if ($target eq 'web' || $target eq 'tex') {
603: } elsif ($target eq 'edit') {
604: $result.=&Apache::edit::tag_end($target,$token);
605: }
606: return $result;
607: }
608:
609:
610: ##----------------------------------------------------------------- key
611: sub start_key {
612: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
613: my $result='';
614: if ($target eq 'web' || $target eq 'tex') {
615: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
616: $tagstack->[-1]);
617: } elsif ($target eq 'edit') {
618: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
619: $result .= &edit_attributes($target,$token,\%key_defaults);
620: } elsif ($target eq 'modified') {
621: my $constructtag=&Apache::edit::get_new_args
622: ($token,$parstack,$safeeval,keys(%key_defaults));
623: if ($constructtag) {
624: $result = &Apache::edit::rebuild_tag($token);
625: }
626: }
627: return $result;
628: }
629:
630: sub end_key {
631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
632: my $result = '';
633: if ($target eq 'web' || $target eq 'tex') {
634: } elsif ($target eq 'edit') {
635: $result.=&Apache::edit::tag_end($target,$token);
636: }
637: return $result;
638: }
639:
640: ##------------------------------------------------------------------- title
641: sub start_title {
642: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
643: my $result='';
644: if ($target eq 'web' || $target eq 'tex') {
645: $title = &Apache::lonxml::get_all_text("/title",$parser);
646: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
647: $title =~ s/\n/ /g;
648: if (length($title) > $max_str_len) {
649: $title = substr($title,0,$max_str_len);
650: }
651: } elsif ($target eq 'edit') {
652: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
653: my $text=&Apache::lonxml::get_all_text("/title",$parser);
654: $result.=&Apache::edit::end_row().
655: &Apache::edit::start_spanning_row().
656: &Apache::edit::editline('',$text,'',60);
657: } elsif ($target eq 'modified') {
658: $result.=&Apache::edit::rebuild_tag($token);
659: $result.=&Apache::edit::modifiedfield("/title",$parser);
660: }
661: return $result;
662: }
663:
664: sub end_title {
665: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
666: my $result = '';
667: if ($target eq 'web' || $target eq 'tex') {
668: } elsif ($target eq 'edit') {
669: $result.=&Apache::edit::tag_end($target,$token);
670: }
671: return $result;
672: }
673: ##------------------------------------------------------------------- xlabel
674: sub start_xlabel {
675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
676: my $result='';
677: if ($target eq 'web' || $target eq 'tex') {
678: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser);
679: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
680: $xlabel =~ s/\n/ /g;
681: if (length($xlabel) > $max_str_len) {
682: $xlabel = substr($xlabel,0,$max_str_len);
683: }
684: } elsif ($target eq 'edit') {
685: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
686: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser);
687: $result.=&Apache::edit::end_row().
688: &Apache::edit::start_spanning_row().
689: &Apache::edit::editline('',$text,'',60);
690: } elsif ($target eq 'modified') {
691: $result.=&Apache::edit::rebuild_tag($token);
692: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
693: }
694: return $result;
695: }
696:
697: sub end_xlabel {
698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
699: my $result = '';
700: if ($target eq 'web' || $target eq 'tex') {
701: } elsif ($target eq 'edit') {
702: $result.=&Apache::edit::tag_end($target,$token);
703: }
704: return $result;
705: }
706:
707: ##------------------------------------------------------------------- ylabel
708: sub start_ylabel {
709: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
710: my $result='';
711: if ($target eq 'web' || $target eq 'tex') {
712: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser);
713: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
714: $ylabel =~ s/\n/ /g;
715: if (length($ylabel) > $max_str_len) {
716: $ylabel = substr($ylabel,0,$max_str_len);
717: }
718: } elsif ($target eq 'edit') {
719: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
720: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser);
721: $result .= &Apache::edit::end_row().
722: &Apache::edit::start_spanning_row().
723: &Apache::edit::editline('',$text,'',60);
724: } elsif ($target eq 'modified') {
725: $result.=&Apache::edit::rebuild_tag($token);
726: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
727: }
728: return $result;
729: }
730:
731: sub end_ylabel {
732: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
733: my $result = '';
734: if ($target eq 'web' || $target eq 'tex') {
735: } elsif ($target eq 'edit') {
736: $result.=&Apache::edit::tag_end($target,$token);
737: }
738: return $result;
739: }
740:
741: ##------------------------------------------------------------------- label
742: sub start_label {
743: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
744: my $result='';
745: if ($target eq 'web' || $target eq 'tex') {
746: my %label;
747: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
748: $tagstack->[-1]);
749: my $text = &Apache::lonxml::get_all_text("/label",$parser);
750: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
751: $text =~ s/\n/ /g;
752: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
753: $label{'text'} = $text;
754: push(@labels,\%label);
755: } elsif ($target eq 'edit') {
756: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
757: $result .= &edit_attributes($target,$token,\%label_defaults);
758: my $text = &Apache::lonxml::get_all_text("/label",$parser);
759: $result .= &Apache::edit::end_row().
760: &Apache::edit::start_spanning_row().
761: &Apache::edit::editline('',$text,'',60);
762: } elsif ($target eq 'modified') {
763: &Apache::edit::get_new_args
764: ($token,$parstack,$safeeval,keys(%label_defaults));
765: $result.=&Apache::edit::rebuild_tag($token);
766: $result.=&Apache::edit::modifiedfield("/label",$parser);
767: }
768: return $result;
769: }
770:
771: sub end_label {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
773: my $result = '';
774: if ($target eq 'web' || $target eq 'tex') {
775: } elsif ($target eq 'edit') {
776: $result.=&Apache::edit::tag_end($target,$token);
777: }
778: return $result;
779: }
780:
781: ##------------------------------------------------------------------- curve
782: sub start_curve {
783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
784: my $result='';
785: &Apache::lonxml::register('Apache::lonplot',('function','data'));
786: push (@Apache::lonxml::namespace,'curve');
787: if ($target eq 'web' || $target eq 'tex') {
788: my %curve;
789: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
790: $tagstack->[-1]);
791: push (@curves,\%curve);
792: } elsif ($target eq 'edit') {
793: $result .= &Apache::edit::tag_start($target,$token,'Curve');
794: $result .= &edit_attributes($target,$token,\%curve_defaults,
795: \@curve_edit_order);
796: } elsif ($target eq 'modified') {
797: my $constructtag=&Apache::edit::get_new_args
798: ($token,$parstack,$safeeval,keys(%curve_defaults));
799: if ($constructtag) {
800: $result = &Apache::edit::rebuild_tag($token);
801: $result.= &Apache::edit::handle_insert();
802: }
803: }
804: return $result;
805: }
806:
807: sub end_curve {
808: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
809: my $result = '';
810: pop @Apache::lonxml::namespace;
811: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
812: if ($target eq 'web' || $target eq 'tex') {
813: } elsif ($target eq 'edit') {
814: $result.=&Apache::edit::tag_end($target,$token);
815: }
816: return $result;
817: }
818:
819: ##------------------------------------------------------------ curve function
820: sub start_function {
821: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
822: my $result='';
823: if ($target eq 'web' || $target eq 'tex') {
824: if (exists($curves[-1]->{'data'})) {
825: &Apache::lonxml::warning
826: ('Use of the <b>curve function</b> tag precludes use of '.
827: ' the <b>curve data</b> tag. '.
828: 'The curve data tag will be omitted in favor of the '.
829: 'curve function declaration.');
830: delete $curves[-1]->{'data'} ;
831: }
832: my $function = &Apache::lonxml::get_all_text("/function",$parser);
833: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
834: $curves[-1]->{'function'} = $function;
835: } elsif ($target eq 'edit') {
836: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
837: my $text = &Apache::lonxml::get_all_text("/function",$parser);
838: $result .= &Apache::edit::end_row().
839: &Apache::edit::start_spanning_row().
840: &Apache::edit::editline('',$text,'',60);
841: } elsif ($target eq 'modified') {
842: $result.=&Apache::edit::rebuild_tag($token);
843: $result.=&Apache::edit::modifiedfield("/function",$parser);
844: }
845: return $result;
846: }
847:
848: sub end_function {
849: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
850: my $result = '';
851: if ($target eq 'web' || $target eq 'tex') {
852: } elsif ($target eq 'edit') {
853: $result .= &Apache::edit::end_table();
854: }
855: return $result;
856: }
857:
858: ##------------------------------------------------------------ curve data
859: sub start_data {
860: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
861: my $result='';
862: if ($target eq 'web' || $target eq 'tex') {
863: if (exists($curves[-1]->{'function'})) {
864: &Apache::lonxml::warning
865: ('Use of the <b>curve function</b> tag precludes use of '.
866: ' the <b>curve data</b> tag. '.
867: 'The curve function tag will be omitted in favor of the '.
868: 'curve data declaration.');
869: delete($curves[-1]->{'function'});
870: }
871: my $datatext = &Apache::lonxml::get_all_text("/data",$parser);
872: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
873: # Deal with cases where we're given an array...
874: if ($datatext =~ /^\@/) {
875: $datatext = &Apache::run::run('return "'.$datatext.'"',
876: $safeeval,1);
877: }
878: $datatext =~ s/\s+/ /g;
879: # Need to do some error checking on the @data array -
880: # make sure it's all numbers and make sure each array
881: # is of the same length.
882: my @data;
883: if ($datatext =~ /,/) { # comma deliminated
884: @data = split /,/,$datatext;
885: } else { # Assume it's space separated.
886: @data = split / /,$datatext;
887: }
888: for (my $i=0;$i<=$#data;$i++) {
889: # Check that it's non-empty
890: if (! defined($data[$i])) {
891: &Apache::lonxml::warning(
892: 'undefined curve data value. Replacing with '.
893: ' pi/e = 1.15572734979092');
894: $data[$i] = 1.15572734979092;
895: }
896: # Check that it's a number
897: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
898: &Apache::lonxml::warning(
899: 'Bad curve data value of '.$data[$i].' Replacing with '.
900: ' pi/e = 1.15572734979092');
901: $data[$i] = 1.15572734979092;
902: }
903: }
904: # complain if the number of data points is not the same as
905: # in previous sets of data.
906: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
907: &Apache::lonxml::warning
908: ('Number of data points is not consistent with previous '.
909: 'number of data points');
910: }
911: push @{$curves[-1]->{'data'}},\@data;
912: } elsif ($target eq 'edit') {
913: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
914: my $text = &Apache::lonxml::get_all_text("/data",$parser);
915: $result .= &Apache::edit::end_row().
916: &Apache::edit::start_spanning_row().
917: &Apache::edit::editline('',$text,'',60);
918: } elsif ($target eq 'modified') {
919: $result.=&Apache::edit::rebuild_tag($token);
920: $result.=&Apache::edit::modifiedfield("/data",$parser);
921: }
922: return $result;
923: }
924:
925: sub end_data {
926: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
927: my $result = '';
928: if ($target eq 'web' || $target eq 'tex') {
929: } elsif ($target eq 'edit') {
930: $result .= &Apache::edit::end_table();
931: }
932: return $result;
933: }
934:
935: ##------------------------------------------------------------------- axis
936: sub start_axis {
937: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
938: my $result='';
939: if ($target eq 'web' || $target eq 'tex') {
940: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
941: $tagstack->[-1]);
942: } elsif ($target eq 'edit') {
943: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
944: $result .= &edit_attributes($target,$token,\%axis_defaults,
945: \@axis_edit_order);
946: } elsif ($target eq 'modified') {
947: my $constructtag=&Apache::edit::get_new_args
948: ($token,$parstack,$safeeval,keys(%axis_defaults));
949: if ($constructtag) {
950: $result = &Apache::edit::rebuild_tag($token);
951: }
952: }
953: return $result;
954: }
955:
956: sub end_axis {
957: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
958: my $result = '';
959: if ($target eq 'web' || $target eq 'tex') {
960: } elsif ($target eq 'edit') {
961: $result.=&Apache::edit::tag_end($target,$token);
962: } elsif ($target eq 'modified') {
963: }
964: return $result;
965: }
966:
967: ###################################################################
968: ## ##
969: ## Utility Functions ##
970: ## ##
971: ###################################################################
972:
973: ##----------------------------------------------------------- set_defaults
974: sub set_defaults {
975: my ($var,$defaults) = @_;
976: my $key;
977: foreach $key (keys(%$defaults)) {
978: $var->{$key} = $defaults->{$key}->{'default'};
979: }
980: }
981:
982: ##------------------------------------------------------------------- misc
983: sub get_attributes{
984: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
985: foreach my $attr (keys(%{$defaults})) {
986: if ($attr eq 'texwidth' || $attr eq 'texfont') {
987: $values->{$attr} =
988: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
989: } else {
990: $values->{$attr} =
991: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
992: }
993: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
994: $values->{$attr} = $defaults->{$attr}->{'default'};
995: next;
996: }
997: my $test = $defaults->{$attr}->{'test'};
998: if (! &$test($values->{$attr})) {
999: &Apache::lonxml::warning
1000: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1001: .$defaults->{$attr}->{'default'} );
1002: $values->{$attr} = $defaults->{$attr}->{'default'};
1003: }
1004: }
1005: return ;
1006: }
1007:
1008: ##------------------------------------------------------- write_gnuplot_file
1009: sub write_gnuplot_file {
1010: my ($tmpdir,$filename,$target)= @_;
1011: my $gnuplot_input = '';
1012: my $curve;
1013: my $pt = $Apache::lonplot::plot{'texfont'};
1014: #
1015: # Check to be sure we do not have any empty curves
1016: my @curvescopy;
1017: foreach my $curve (@curves) {
1018: if (exists($curve->{'function'})) {
1019: if ($curve->{'function'} !~ /^\s*$/) {
1020: push(@curvescopy,$curve);
1021: }
1022: } elsif (exists($curve->{'data'})) {
1023: foreach my $data (@{$curve->{'data'}}) {
1024: if (scalar(@$data) > 0) {
1025: push(@curvescopy,$curve);
1026: last;
1027: }
1028: }
1029: }
1030: }
1031: @curves = @curvescopy;
1032: # Collect all the colors
1033: my @Colors;
1034: push @Colors, $Apache::lonplot::plot{'bgcolor'};
1035: push @Colors, $Apache::lonplot::plot{'fgcolor'};
1036: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
1037: foreach $curve (@curves) {
1038: push @Colors, ($curve->{'color'} ne '' ?
1039: $curve->{'color'} :
1040: $Apache::lonplot::plot{'fgcolor'} );
1041: }
1042: # set term
1043: if ($target eq 'web') {
1044: $gnuplot_input .= 'set term '.$weboutputformat .' ';
1045: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
1046: $gnuplot_input .= $Apache::lonplot::plot{'font'} . ' ';
1047: $gnuplot_input .= 'size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
1048: $gnuplot_input .= "@Colors\n";
1049: # set output
1050: $gnuplot_input .= "set output\n";
1051: } elsif ($target eq 'tex') {
1052: $gnuplot_input .= "set term postscript eps $Apache::lonplot::plot{'plotcolor'} solid \"Helvetica\" $pt \n";
1053: $gnuplot_input .= "set output \"/home/httpd/perl/tmp/".
1054: &Apache::lonnet::unescape($filename).".eps\"\n";
1055: }
1056: # cartesian or polar?
1057: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
1058: $gnuplot_input .= 'set polar'.$/;
1059: } else {
1060: # Assume Cartesian
1061: }
1062: # margin
1063: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
1064: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
1065: }
1066: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
1067: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
1068: }
1069: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
1070: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
1071: }
1072: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
1073: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
1074: }
1075: # tic scales
1076: $gnuplot_input .= 'set ticscale '.
1077: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1078: # grid
1079: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
1080: # border
1081: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
1082: 'set border'.$/ :
1083: 'set noborder'.$/ );
1084: # sampling rate for non-data curves
1085: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
1086: # title, xlabel, ylabel
1087: # titles
1088: if ($target eq 'tex') {
1089: $gnuplot_input .= "set title \"$title\" font \"Helvetica,".$pt."pt\"\n" if (defined($title)) ;
1090: $gnuplot_input .= "set xlabel \"$xlabel\" font \"Helvetica,".$pt."pt\" \n" if (defined($xlabel));
1091: $gnuplot_input .= "set ylabel \"$ylabel\" font \"Helvetica,".$pt."pt\"\n" if (defined($ylabel));
1092: } else {
1093: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1094: $gnuplot_input .= "set xlabel \"$xlabel\" \n" if (defined($xlabel));
1095: $gnuplot_input .= "set ylabel \"$ylabel\" \n" if (defined($ylabel));
1096: }
1097: # tics
1098: if (%xtics) {
1099: $gnuplot_input .= "set xtics $xtics{'location'} ";
1100: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1101: $gnuplot_input .= "$xtics{'start'}, ";
1102: $gnuplot_input .= "$xtics{'increment'}, ";
1103: $gnuplot_input .= "$xtics{'end'}\n";
1104: if ($xtics{'minorfreq'} != 0) {
1105: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
1106: }
1107: }
1108: if (%ytics) {
1109: $gnuplot_input .= "set ytics $ytics{'location'} ";
1110: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1111: $gnuplot_input .= "$ytics{'start'}, ";
1112: $gnuplot_input .= "$ytics{'increment'}, ";
1113: $gnuplot_input .= "$ytics{'end'}\n";
1114: if ($ytics{'minorfreq'} != 0) {
1115: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
1116: }
1117: }
1118: # axis
1119: if (%axis) {
1120: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1121: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1122: }
1123: # Key
1124: if (%key) {
1125: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1126: if ($key{'title'} ne '') {
1127: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1128: }
1129: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1130: } else {
1131: $gnuplot_input .= 'set nokey'.$/;
1132: }
1133: # labels
1134: my $label;
1135: foreach $label (@labels) {
1136: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1137: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'};
1138: if ($target eq 'tex') {
1139: $gnuplot_input .=' font "Helvetica,'.$pt.'pt"' ;
1140: }
1141: $gnuplot_input .= $/;
1142: }
1143: if ($target eq 'tex') {
1144: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
1145: $gnuplot_input .="\n";
1146: }
1147: # curves
1148: $gnuplot_input .= 'plot ';
1149: for (my $i = 0;$i<=$#curves;$i++) {
1150: $curve = $curves[$i];
1151: $gnuplot_input.= ', ' if ($i > 0);
1152: if (exists($curve->{'function'})) {
1153: $gnuplot_input.=
1154: $curve->{'function'}.' title "'.
1155: $curve->{'name'}.'" with '.
1156: $curve->{'linestyle'};
1157: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1158: if (($curve->{'linestyle'} eq 'points') ||
1159: ($curve->{'linestyle'} eq 'linespoints') ||
1160: ($curve->{'linestyle'} eq 'errorbars') ||
1161: ($curve->{'linestyle'} eq 'xerrorbars') ||
1162: ($curve->{'linestyle'} eq 'yerrorbars') ||
1163: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1164: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1165: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1166: }
1167: } elsif (exists($curve->{'data'})) {
1168: # Store data values in $datatext
1169: my $datatext = '';
1170: # get new filename
1171: my $datafilename = "$tmpdir/$filename.data.$i";
1172: my $fh=Apache::File->new(">$datafilename");
1173: # Compile data
1174: my @Data = @{$curve->{'data'}};
1175: my @Data0 = @{$Data[0]};
1176: for (my $i =0; $i<=$#Data0; $i++) {
1177: my $dataset;
1178: foreach $dataset (@Data) {
1179: $datatext .= $dataset->[$i] . ' ';
1180: }
1181: $datatext .= $/;
1182: }
1183: # write file
1184: print $fh $datatext;
1185: close ($fh);
1186: # generate gnuplot text
1187: $gnuplot_input.= '"'.$datafilename.'" title "'.
1188: $curve->{'name'}.'" with '.
1189: $curve->{'linestyle'};
1190: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1191: if (($curve->{'linestyle'} eq 'points') ||
1192: ($curve->{'linestyle'} eq 'linespoints') ||
1193: ($curve->{'linestyle'} eq 'errorbars') ||
1194: ($curve->{'linestyle'} eq 'xerrorbars') ||
1195: ($curve->{'linestyle'} eq 'yerrorbars') ||
1196: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1197: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1198: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1199: }
1200: }
1201: }
1202: # Write the output to a file.
1203: my $fh=Apache::File->new(">$tmpdir$filename.data");
1204: print $fh $gnuplot_input;
1205: close($fh);
1206: # That's all folks.
1207: return ;
1208: }
1209:
1210: #---------------------------------------------- check_inputs
1211: sub check_inputs {
1212: ## Note: no inputs, no outputs - this acts only on global variables.
1213: ## Make sure we have all the input we need:
1214: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
1215: if (! %key ) {} # No key for this plot, thats okay
1216: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1217: if (! defined($title )) {} # No title for this plot, thats okay
1218: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1219: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1220: if ($#labels < 0) { } # No labels for this plot, thats okay
1221: if ($#curves < 0) {
1222: &Apache::lonxml::warning("No curves specified for plot!!!!");
1223: return '';
1224: }
1225: my $curve;
1226: foreach $curve (@curves) {
1227: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1228: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1229: return '';
1230: }
1231: }
1232: }
1233:
1234: #------------------------------------------------ make_edit
1235: sub edit_attributes {
1236: my ($target,$token,$defaults,$keys) = @_;
1237: my ($result,@keys);
1238: if ($keys && ref($keys) eq 'ARRAY') {
1239: @keys = @$keys;
1240: } else {
1241: @keys = sort(keys(%$defaults));
1242: }
1243: foreach my $attr (@keys) {
1244: # append a ' ' to the description if it doesn't have one already.
1245: my $description = $defaults->{$attr}->{'description'};
1246: $description .= ' ' if ($description !~ / $/);
1247: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1248: $result .= &Apache::edit::text_arg
1249: ($description,$attr,$token,
1250: $defaults->{$attr}->{'size'});
1251: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1252: $result .= &Apache::edit::select_or_text_arg
1253: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1254: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1255: $result .= &Apache::edit::select_or_text_arg
1256: ($description,$attr,['on','off'],$token);
1257: }
1258: $result .= '<br />';
1259: }
1260: return $result;
1261: }
1262:
1263:
1264: ###################################################################
1265: ## ##
1266: ## Insertion functions for editing plots ##
1267: ## ##
1268: ###################################################################
1269:
1270: sub insert_gnuplot {
1271: my $result = '';
1272: # plot attributes
1273: $result .= "\n<gnuplot ";
1274: foreach my $attr (keys(%gnuplot_defaults)) {
1275: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1276: }
1277: $result .= ">";
1278: # Add the components (most are commented out for simplicity)
1279: # $result .= &insert_key();
1280: # $result .= &insert_axis();
1281: # $result .= &insert_title();
1282: # $result .= &insert_xlabel();
1283: # $result .= &insert_ylabel();
1284: $result .= &insert_curve();
1285: # close up the <gnuplot>
1286: $result .= "\n</gnuplot>";
1287: return $result;
1288: }
1289:
1290: sub insert_tics {
1291: my $result;
1292: $result .= &insert_xtics() . &insert_ytics;
1293: return $result;
1294: }
1295:
1296: sub insert_xtics {
1297: my $result;
1298: $result .= "\n <xtics ";
1299: foreach my $attr (keys(%tic_defaults)) {
1300: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1301: }
1302: $result .= "/>";
1303: return $result;
1304: }
1305:
1306: sub insert_ytics {
1307: my $result;
1308: $result .= "\n <ytics ";
1309: foreach my $attr (keys(%tic_defaults)) {
1310: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1311: }
1312: $result .= "/>";
1313: return $result;
1314: }
1315:
1316: sub insert_key {
1317: my $result;
1318: $result .= "\n <key ";
1319: foreach my $attr (keys(%key_defaults)) {
1320: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1321: }
1322: $result .= " />";
1323: return $result;
1324: }
1325:
1326: sub insert_axis{
1327: my $result;
1328: $result .= "\n <axis ";
1329: foreach my $attr (keys(%axis_defaults)) {
1330: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1331: }
1332: $result .= " />";
1333: return $result;
1334: }
1335:
1336: sub insert_title { return "\n <title></title>"; }
1337: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1338: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1339:
1340: sub insert_label {
1341: my $result;
1342: $result .= "\n <label ";
1343: foreach my $attr (keys(%label_defaults)) {
1344: $result .= "\n $attr=\"".
1345: $label_defaults{$attr}->{'default'}."\"";
1346: }
1347: $result .= "></label>";
1348: return $result;
1349: }
1350:
1351: sub insert_curve {
1352: my $result;
1353: $result .= "\n <curve ";
1354: foreach my $attr (keys(%curve_defaults)) {
1355: $result .= "\n $attr=\"".
1356: $curve_defaults{$attr}->{'default'}."\"";
1357: }
1358: $result .= " >";
1359: $result .= &insert_data().&insert_data()."\n </curve>";
1360: }
1361:
1362: sub insert_function {
1363: my $result;
1364: $result .= "\n <function></function>";
1365: return $result;
1366: }
1367:
1368: sub insert_data {
1369: my $result;
1370: $result .= "\n <data></data>";
1371: return $result;
1372: }
1373:
1374: ##----------------------------------------------------------------------
1375: 1;
1376: __END__
1377:
1378:
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