Annotation of loncom/interface/statistics/lonproblemanalysis.pm, revision 1.33
1.1 stredwic 1: # The LearningOnline Network with CAPA
2: #
1.33 ! matthew 3:
! 4: # $Id: lonproblemanalysis.pm,v 1.32 2003/10/10 21:49:20 matthew Exp $
1.1 stredwic 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:
1.11 minaeibi 29: package Apache::lonproblemanalysis;
1.1 stredwic 30:
31: use strict;
32: use Apache::lonnet();
1.25 matthew 33: use Apache::loncommon();
1.7 stredwic 34: use Apache::lonhtmlcommon();
1.23 matthew 35: use Apache::loncoursedata();
36: use Apache::lonstatistics;
37: use Apache::lonlocal;
1.2 stredwic 38:
1.1 stredwic 39: sub BuildProblemAnalysisPage {
1.23 matthew 40: my ($r,$c)=@_;
1.24 matthew 41: $r->print('<h2>'.&mt('Option Response Problem Analysis').'</h2>');
1.25 matthew 42: $r->print(&CreateInterface());
1.28 matthew 43: #
44: my @Students = @Apache::lonstatistics::Students;
45: #
1.33 ! matthew 46: if (exists($ENV{'form.updatecaches'}) ||
! 47: (exists($ENV{'form.firstanalysis'}) &&
! 48: $ENV{'form.firstanalysis'} ne 'no')) {
! 49: &Apache::lonstatistics::Gather_Full_Student_Data($r);
! 50: }
! 51: if (! exists($ENV{'form.firstanalysis'})) {
! 52: $r->print('<input type="hidden" name="firstanalysis" value="yes" />');
! 53: } else {
! 54: $r->print('<input type="hidden" name="firstanalysis" value="no" />');
! 55: }
! 56: if (exists($ENV{'form.problemchoice'}) &&
! 57: ! exists($ENV{'form.SelectAnother'})) {
1.31 matthew 58: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
59: &mt('Analyze Problem Again').'" />');
60: $r->print(' 'x5);
61: $r->print('<input type="submit" name="ClearCache" value="'.
62: &mt('Clear Caches').'" />');
63: $r->print(' 'x5);
1.33 ! matthew 64: $r->print('<input type="submit" name="updatecaches" value="'.
! 65: &mt('Update Student Data').'" />');
! 66: $r->print(' 'x5);
1.31 matthew 67: $r->print('<input type="hidden" name="problemchoice" value="'.
68: $ENV{'form.problemchoice'}.'" />');
69: $r->print('<input type="submit" name="SelectAnother" value="'.
70: &mt('Choose a different resource').'" />');
71: $r->print(' 'x5);
72: #
1.25 matthew 73: $r->print('<hr />');
1.23 matthew 74: #
1.25 matthew 75: my ($symb,$part,$resid) = &get_problem_symb(
1.23 matthew 76: &Apache::lonnet::unescape($ENV{'form.problemchoice'})
77: );
1.28 matthew 78: #
1.23 matthew 79: my $resource = &get_resource_from_symb($symb);
80: if (defined($resource)) {
1.25 matthew 81: my %Data = &get_problem_data($resource->{'src'});
82: my $ORdata = $Data{$part.'.'.$resid};
83: ##
1.26 matthew 84: ## Render the problem
1.25 matthew 85: my $base;
86: ($base,undef) = ($resource->{'src'} =~ m|(.*/)[^/]*$|);
87: $base = "http://".$ENV{'SERVER_NAME'}.$base;
1.26 matthew 88: my $rendered_problem =
89: &Apache::lonnet::ssi_body($resource->{'src'});
1.30 matthew 90: $rendered_problem =~ s/<\s*form\s*/<nop /g;
91: $rendered_problem =~ s|(<\s*/form\s*>)|<\/nop>|g;
1.26 matthew 92: $r->print('<table bgcolor="ffffff"><tr><td>'.
1.25 matthew 93: '<base href="'.$base.'" />'.
1.26 matthew 94: $rendered_problem.
95: '</td></tr></table>');
1.25 matthew 96: ##
97: ## Analyze the problem
1.26 matthew 98: my $PerformanceData =
99: &Apache::loncoursedata::get_optionresponse_data
1.28 matthew 100: (\@Students,$symb,$resid);
1.26 matthew 101: if (defined($PerformanceData) &&
102: ref($PerformanceData) eq 'ARRAY') {
1.28 matthew 103: if ($ENV{'form.AnalyzeBy'} eq 'Tries') {
1.33 ! matthew 104: my $analysis_html = &tries_analysis($PerformanceData,
! 105: $ORdata);
! 106: $r->print($analysis_html);
! 107: } elsif ($ENV{'form.AnalyzeBy'} eq 'Time') {
! 108: my $analysis_html = &time_analysis($PerformanceData,
1.28 matthew 109: $ORdata);
1.26 matthew 110: $r->print($analysis_html);
1.28 matthew 111: } else {
112: $r->print('<h2>'.
113: &mt('The analysis you have selected is '.
114: 'not supported at this time').
115: '</h2>');
116: }
1.26 matthew 117: } else {
118: $r->print('<h2>'.
119: &mt('There is no student data for this problem.').
120: '</h2>');
121: }
1.23 matthew 122: } else {
123: $r->print('resource is undefined');
1.7 stredwic 124: }
1.23 matthew 125: $r->print('<hr />');
1.25 matthew 126: } else {
1.31 matthew 127: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
128: &mt('Analyze Problem').'" />');
129: $r->print(' 'x5);
1.27 matthew 130: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
1.31 matthew 131: $r->print(&OptionResponseProblemSelector());
1.1 stredwic 132: }
133: }
134:
1.25 matthew 135:
1.33 ! matthew 136: #########################################################
! 137: #########################################################
! 138: ##
! 139: ## Misc interface routines use by analysis code
! 140: ##
! 141: #########################################################
! 142: #########################################################
! 143: sub build_foil_index {
! 144: my ($ORdata) = @_;
! 145: my @Foils = sort(keys(%{$ORdata->{'Foiltext'}}));
1.25 matthew 146: my %Row_Label;
147: foreach my $foilid (@Foils) {
148: my $value = $ORdata->{'Foiltext'}->{$foilid};
149: $Row_Label{$foilid} = $ORdata->{'Foiltext'}->{$foilid};
150: }
1.31 matthew 151: #
152: # Build up the table of row labels.
153: my $table = '<table border="1" >'."\n";
1.32 matthew 154: $table .= '<tr><th>'.&mt('Foil Number').'</th>'.
155: '<th>'.&mt('Foil Text')."</th></tr>\n";
1.31 matthew 156: my $index = 1;
157: foreach my $foilid (@Foils) {
158: $table .= '<tr><td>'.$index.'</td>'.
159: '<td>'.$Row_Label{$foilid}."</td></tr>\n";
160: } continue {
161: $index++;
1.25 matthew 162: }
1.31 matthew 163: $table .= "</table>\n";
1.33 ! matthew 164: return ($table,@Foils);
! 165: }
! 166:
! 167: #########################################################
! 168: #########################################################
! 169: ##
! 170: ## Tries Analysis
! 171: ##
! 172: #########################################################
! 173: #########################################################
! 174: sub tries_analysis {
! 175: my ($PerformanceData,$ORdata) = @_;
! 176: my $mintries = 1;
! 177: my $maxtries = $ENV{'form.NumPlots'};
! 178: my %ResponseData = &analyze_option_data_by_tries($PerformanceData,
! 179: $mintries,$maxtries);
! 180: my ($table,@Foils) = &build_foil_index($ORdata);
1.31 matthew 181: #
182: # Compute the data neccessary to make the plots
1.25 matthew 183: my @PlotData;
184: my @CumulativePlotData;
185: foreach my $foilid (@Foils) {
186: for (my $i=$mintries;$i<=$maxtries;$i++) {
187: #
188: # Gather the per-attempt data
189: push (@{$PlotData[$i]->{'good'}},
190: $ResponseData{$foilid}->[$i]->{'percent_corr'});
191: push (@{$PlotData[$i]->{'bad'}},
192: 100-$ResponseData{$foilid}->[$i]->{'percent_corr'});
1.31 matthew 193: #
194: # Someday we may need the cumulative data and I think
195: # this is a neat way of computing it as we go along.
1.25 matthew 196: push (@{$CumulativePlotData[$i]->{'good'}},
197: $CumulativePlotData[-1]->{'good'}+
198: $ResponseData{$foilid}->[$i]->{'correct'});
199: push (@{$CumulativePlotData[$i]->{'bad'}},
200: $CumulativePlotData[-1]->{'bad'}+
201: $ResponseData{$foilid}->[$i]->{'incorrect'});
202: }
203: }
1.31 matthew 204: #
205: # Build a table for the plots
206: $table .= "<table>\n";
207: my @Plots;
1.25 matthew 208: for (my $i=$mintries;$i<=$maxtries;$i++) {
1.27 matthew 209: my $minstu = $ResponseData{$Foils[0]}->[$i]->{'total'};
210: my $maxstu = $ResponseData{$Foils[0]}->[$i]->{'total'};
211: foreach my $foilid (@Foils) {
212: if ($minstu > $ResponseData{$foilid}->[$i]->{'total'}) {
213: $minstu = $ResponseData{$foilid}->[$i]->{'total'};
214: }
215: if ($maxstu < $ResponseData{$foilid}->[$i]->{'total'}) {
216: $maxstu = $ResponseData{$foilid}->[$i]->{'total'};
217: }
218: }
1.28 matthew 219: $maxstu = 0 if (! $maxstu);
220: $minstu = 0 if (! $minstu);
1.27 matthew 221: my $graphlink;
222: if ($maxstu == $minstu) {
1.28 matthew 223: $graphlink = &Apache::loncommon::DrawGraph
224: ('Attempt '.$i.', '.$maxstu.' students',
225: 'Foil Number',
226: 'Percent Correct',
227: 100,
228: $PlotData[$i]->{'good'},
229: $PlotData[$i]->{'bad'});
1.27 matthew 230: } else {
1.29 matthew 231: $graphlink = &Apache::loncommon::DrawGraph
1.28 matthew 232: ('Attempt '.$i.', '.$minstu.'-'.$maxstu.
233: ' students',
234: 'Foil Number',
235: 'Percent Correct',
236: 100,
237: $PlotData[$i]->{'good'},
238: $PlotData[$i]->{'bad'});
1.27 matthew 239: }
1.31 matthew 240: push(@Plots,$graphlink);
1.25 matthew 241: }
1.31 matthew 242: #
243: # Should this be something the user can set? Too many dialogs!
244: my $plots_per_row = 2;
245: while (my $plotlink = shift(@Plots)) {
246: $table .= '<tr><td>'.$plotlink.'</td>';
247: for (my $i=1;$i<$plots_per_row;$i++) {
248: if ($plotlink = shift(@Plots)) {
249: $table .= '<td>'.$plotlink.'</td>';
250: } else {
251: $table .= '<td></td>';
252: }
253: }
254: $table .= "</tr>\n";
1.25 matthew 255: }
1.31 matthew 256: $table .= "</table>\n";
1.25 matthew 257: return ($table);
258: }
259:
260: sub analyze_option_data_by_tries {
1.26 matthew 261: my ($PerformanceData,$mintries,$maxtries) = @_;
1.25 matthew 262: my %Trydata;
263: $mintries = 1 if (! defined($mintries) || $mintries < 1);
264: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1.26 matthew 265: foreach my $row (@$PerformanceData) {
266: next if (! defined($row));
1.25 matthew 267: my ($grading,$submission,$time,$tries) = @$row;
268: my @Foilgrades = split('&',$grading);
269: my @Foilsubs = split('&',$submission);
270: for (my $numtries = 1; $numtries <= $maxtries; $numtries++) {
271: if ($tries == $numtries) {
272: foreach my $foilgrade (@Foilgrades) {
273: my ($foilid,$correct) = split('=',$foilgrade);
274: if ($correct) {
275: $Trydata{$foilid}->[$numtries]->{'correct'}++;
276: } else {
277: $Trydata{$foilid}->[$numtries]->{'incorrect'}++;
278: }
279: }
280: }
281: }
282: }
283: foreach my $foilid (keys(%Trydata)) {
284: foreach my $tryhash (@{$Trydata{$foilid}}) {
285: next if ((! exists($tryhash->{'correct'}) &&
286: ! exists($tryhash->{'incorrect'})) ||
287: ($tryhash->{'correct'} < 1 &&
288: $tryhash->{'incorrect'} < 1));
1.27 matthew 289: $tryhash->{'total'} = $tryhash->{'correct'} +
290: $tryhash->{'incorrect'};
1.25 matthew 291: $tryhash->{'percent_corr'} = 100 *
292: ($tryhash->{'correct'} /
293: ($tryhash->{'correct'} + $tryhash->{'incorrect'})
294: );
295: }
296: }
297: return %Trydata;
298: }
299:
1.33 ! matthew 300: #########################################################
! 301: #########################################################
! 302: ##
! 303: ## Time Analysis
! 304: ##
! 305: #########################################################
! 306: #########################################################
! 307: sub time_analysis {
! 308: my ($PerformanceData,$ORdata) = @_;
! 309: my $num_plots = $ENV{'form.NumPlots'};
! 310: my ($table,@Foils) = &build_foil_index($ORdata);
! 311: my ($begin_index,$end_index);
! 312: my $num_data = scalar(@$PerformanceData)-1;
! 313: my $percent = sprintf('%2f',100/$num_plots);
! 314: for (my $i=0;$i<$num_plots;$i++) {
! 315: $begin_index = $i*int($num_data/$num_plots);
! 316: $end_index = ($i+1)*int($num_data/$num_plots);
! 317: my $lownum = sprintf('%2.1f',$i*$percent);
! 318: $lownum =~ s/(\.0)$//;
! 319: my $highnum = sprintf('%2.1f',($i+1)*$percent);
! 320: $highnum =~ s/(\.0)$//;
! 321: my ($plothtml,$starttime,$endtime,$data) =
! 322: &analyze_option_data_by_time($PerformanceData,
! 323: $begin_index,$end_index,
! 324: $lownum.'% to '.$highnum.'% of submissions',
! 325: @Foils);
! 326: $table.=$plothtml;
! 327: }
! 328: return $table;
! 329: }
! 330:
! 331: sub analyze_option_data_by_time {
! 332: my ($PerformanceData,$begin_index,$end_index,$description,@Foils) = @_;
! 333: my %TimeData;
! 334: #
! 335: # Get the start and end times for this segment of the plot
! 336: my $starttime = $PerformanceData->[$begin_index]->[2];
! 337: my $endtime = $PerformanceData->[$end_index ]->[2];
! 338: #
! 339: # Compute the number getting the foils correct or incorrects
! 340: for (my $i=$begin_index;$i<=$end_index;$i++) {
! 341: my $row = $PerformanceData->[$i];
! 342: next if (! defined($row));
! 343: my ($grading,$submission,$time,$tries) = @$row;
! 344: my @Foilgrades = split('&',$grading);
! 345: my @Foilsubs = split('&',$submission);
! 346: foreach my $foilgrade (@Foilgrades) {
! 347: my ($foilid,$correct) = split('=',$foilgrade);
! 348: if ($correct) {
! 349: $TimeData{$foilid}->{'correct'}++;
! 350: } else {
! 351: $TimeData{$foilid}->{'incorrect'}++;
! 352: }
! 353: }
! 354: }
! 355: #
! 356: # Compute the total and percent correct
! 357: my @Plotdata1;
! 358: my @Plotdata2;
! 359: foreach my $foilid (@Foils) {
! 360: if (! exists($TimeData{$foilid}->{'correct'})) {
! 361: $TimeData{$foilid}->{'correct'} = 0;
! 362: }
! 363: if (! exists($TimeData{$foilid}->{'incorrect'})) {
! 364: $TimeData{$foilid}->{'incorrect'} = 0;
! 365: }
! 366: $TimeData{$foilid}->{'total'} = $TimeData{$foilid}->{'correct'} +
! 367: $TimeData{$foilid}->{'incorrect'};
! 368: $TimeData{$foilid}->{'percent_corr'} = 100 *
! 369: $TimeData{$foilid}->{'correct'} /
! 370: $TimeData{$foilid}->{'total'};
! 371: push (@Plotdata1, $TimeData{$foilid}->{'percent_corr'});
! 372: push (@Plotdata2,100-$TimeData{$foilid}->{'percent_corr'});
! 373: }
! 374: #
! 375: # Create the plot
! 376: my $graphlink = &Apache::loncommon::DrawGraph
! 377: ($description,#'Time Interval Analysis',
! 378: 'Foil Number',
! 379: 'Percent Correct / Incorrect',
! 380: 100,
! 381: \@Plotdata1,\@Plotdata2);
! 382: $graphlink .= "<br />\n".
! 383: "<b>Start Time</b>: ".localtime($starttime)."<br />\n".
! 384: "<b>End Time</b>: ".localtime($endtime)."<br />\n";
! 385: #
! 386: return ($graphlink,$starttime,$endtime,\%TimeData);
1.1 stredwic 387: }
388:
1.33 ! matthew 389:
! 390:
! 391:
! 392: #########################################################
! 393: #########################################################
! 394: ##
! 395: ## Interface
! 396: ##
! 397: #########################################################
! 398: #########################################################
1.23 matthew 399: sub CreateInterface {
1.28 matthew 400: ##
401: ## Environment variable initialization
402: if (! exists$ENV{'form.AnalyzeBy'}) {
403: $ENV{'form.AnalyzeBy'} = 'Tries';
404: }
405: ##
406: ## Build the menu
1.7 stredwic 407: my $Str = '';
1.23 matthew 408: $Str .= '<table cellspacing="5">'."\n";
409: $Str .= '<tr>';
410: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
411: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1.31 matthew 412: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
413: $Str .= '<td align="center"> </td>';
1.23 matthew 414: $Str .= '</tr>'."\n";
1.31 matthew 415: ##
416: ##
1.23 matthew 417: $Str .= '<tr><td align="center">'."\n";
418: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1.28 matthew 419: $Str .= '</td>';
420: #
421: $Str .= '<td align="center">';
1.23 matthew 422: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1.28 matthew 423: $Str .= '</td>';
424: #
1.31 matthew 425: # $Str .= '<td align="center">';
1.23 matthew 426: my $only_seq_with_assessments = sub {
427: my $s=shift;
428: if ($s->{'num_assess'} < 1) {
429: return 0;
430: } else {
431: return 1;
432: }
433: };
1.31 matthew 434: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1.23 matthew 435: $only_seq_with_assessments);
1.31 matthew 436: # $Str .= '</td>';
1.28 matthew 437: #
438: $Str .= '<td>';
1.31 matthew 439: $Str .= '<nobr>'.&mt('Analyze By ');
440: $Str .='<select name="AnalyzeBy" >';
441: #
442: $Str .= '<option value="Tries" ';
443: if (! exists($ENV{'form.AnalyzeBy'}) || $ENV{'form.AnalyzeBy'} eq 'Tries'){
444: # Default to Tries
445: $Str .= ' selected ';
446: }
447: $Str .= '>'.&mt('Tries').'</option>';
448: #
449: $Str .= '<option value="Time" ';
450: $Str .= ' selected ' if ($ENV{'form.AnalyzeBy'} eq 'Time');
451: $Str .= '>'.&mt('Time').'</option>';
452: $Str .= '</select></nobr><br />';
453: #
454: $Str .= '<br /><nobr>'.&mt('Number of Plots:');
455: $Str .= '<select name="NumPlots">';
456: if (! exists($ENV{'form.NumPlots'})
457: || $ENV{'form.NumPlots'} < 1
458: || $ENV{'form.NumPlots'} > 20) {
1.33 ! matthew 459: $ENV{'form.NumPlots'} = 5;
1.31 matthew 460: }
461: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
462: $Str .= '<option value="'.$i.'" ';
463: if ($ENV{'form.NumPlots'} == $i) { $Str.=' selected '; }
464: $Str .= '>'.$i.'</option>';
1.28 matthew 465: }
1.31 matthew 466: $Str .= '</select></nobr>';
1.28 matthew 467: $Str .= '</td>';
468: #
469: $Str .= '</tr>'."\n";
1.23 matthew 470: $Str .= '</table>'."\n";
471: return ($Str);
472: }
473:
474: sub OptionResponseProblemSelector {
475: my $Str;
476: $Str = "\n<table>\n";
477: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
478: next if ($seq->{'num_assess'}<1);
479: my $seq_str = '';
480: foreach my $res (@{$seq->{'contents'}}) {
481: # &Apache::lonnet::logthis('checking '.$res->{'title'});
1.26 matthew 482: next if ($res->{'type'} ne 'assessment');
1.23 matthew 483: foreach my $part (@{$res->{'parts'}}) {
484: my $partdata = $res->{'partdata'}->{$part};
485: if (! exists($partdata->{'option'}) ||
486: $partdata->{'option'} == 0) {
487: next;
488: }
489: for (my $i=0;$i<scalar(@{$partdata->{'ResponseTypes'}});$i++){
490: my $respid = $partdata->{'ResponseIds'}->[$i];
491: my $resptype = $partdata->{'ResponseTypes'}->[$i];
492: if ($resptype eq 'option') {
1.25 matthew 493: my $value = &Apache::lonnet::escape($res->{'symb'}.':'.$part.':'.$respid);
1.23 matthew 494: my $checked = '';
495: if ($ENV{'form.problemchoice'} eq $value) {
496: $checked = 'checked ';
497: }
498: $seq_str .= '<tr><td>'.
499: '<input type="radio" name="problemchoice" value="'.$value.'" '.$checked.'/>'.
500: '</td><td>'.
501: '<a href="'.$res->{'src'}.'">'.$res->{'title'}.'</a> ';
502: if ($partdata->{'option'} > 1) {
503: $seq_str .= &mt('response').' '.$respid;
504: }
505: $seq_str .= "</td></tr>\n";
1.11 minaeibi 506: }
507: }
508: }
509: }
1.23 matthew 510: if ($seq_str ne '') {
511: $Str .= '<tr><td> </td><td><b>'.$seq->{'title'}.'</b></td>'.
512: "</tr>\n".$seq_str;
513: }
1.11 minaeibi 514: }
1.23 matthew 515: $Str .= "</table>\n";
516: return $Str;
1.33 ! matthew 517: }
! 518:
! 519: #########################################################
! 520: #########################################################
! 521: ##
! 522: ## Misc functions
! 523: ##
! 524: #########################################################
! 525: #########################################################
! 526: sub get_problem_symb {
! 527: my $problemstring = shift();
! 528: my ($symb,$partid,$resid) = ($problemstring=~ /^(.*):([^:]*):([^:]*)$/);
! 529: return ($symb,$partid,$resid);
1.11 minaeibi 530: }
531:
1.23 matthew 532: sub get_resource_from_symb {
533: my ($symb) = @_;
534: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
535: foreach my $res (@{$seq->{'contents'}}) {
536: if ($res->{'symb'} eq $symb) {
537: return $res;
1.2 stredwic 538: }
1.1 stredwic 539: }
540: }
1.23 matthew 541: return undef;
1.1 stredwic 542: }
543:
1.25 matthew 544: sub get_problem_data {
545: my ($url) = @_;
546: # my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze',
547: # 'grade_username' => $sname,
548: # 'grade_domain' => $sdom,
549: # 'grade_courseid' => $cid,
550: # 'grade_symb' => $symb));
551: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
1.23 matthew 552: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1.25 matthew 553: my %Answer;
1.23 matthew 554: %Answer=&Apache::lonnet::str2hash($Answ);
1.25 matthew 555: # &Apache::lonnet::logthis('keys of %Answer = '.join(', ',(keys(%Answer))));
556: # &Apache::lonnet::logthis('$Answer{parts} = '.
557: # join(', ',@{$Answer{'parts'}}));
558: my %Partdata;
559: foreach my $part (@{$Answer{'parts'}}) {
560: while (my($key,$value) = each(%Answer)) {
561: next if ($key !~ /^$part/);
562: $key =~ s/^$part\.//;
563: if (ref($value) eq 'ARRAY') {
564: if ($key eq 'options') {
565: $Partdata{$part}->{'Options'}=$value;
566: } elsif ($key eq 'concepts') {
567: $Partdata{$part}->{'Concepts'}=$value;
568: } elsif ($key =~ /^concept\.(.*)$/) {
569: my $concept = $1;
570: foreach my $foil (@$value) {
571: $Partdata{$part}->{$foil}->{'Concept'}=$concept;
572: }
573: }
1.26 matthew 574: # &Apache::lonnet::logthis($part.' '.$key.' (array) = '.
575: # join(', ',@$value));
1.25 matthew 576: } else {
577: $value =~ s/^\s*//g;
578: $value =~ s/\s*$//g;
579: if ($key=~ /^foil\.text\.(.*)$/) {
580: my $foil = $1;
581: $Partdata{$part}->{'Foiltext'}->{$foil}=$value;
582: } elsif ($key =~ /^foil\.value\.(.*)$/) {
583: my $foil = $1;
584: $Partdata{$part}->{'FoilValues'}->{$foil}=$value;
585: }
1.26 matthew 586: # &Apache::lonnet::logthis($part.' '.$key.' = '.$value);
1.25 matthew 587: }
588: }
1.23 matthew 589: }
590:
1.25 matthew 591: # my $parts='';
592: # foreach my $elm (@{$Answer{"parts"}}) {
593: # $parts.="$elm,";
594: # }
595: # chop($parts);
596: # my $conc='';
597: # foreach my $elm (@{$Answer{"$parts.concepts"}}) {
598: # $conc.="$elm@";
599: # }
600: # chop($conc);
601: #
602: # @Concepts=split(/\@/,$conc);
603: # foreach my $concept (@{$Answer{"$parts.concepts"}}) {
604: # foreach my $foil (@{$Answer{"$parts.concept.$concept"}}) {
605: # $foil_to_concept{$foil} = $concept;
606: # #$ConceptData{$foil} = $Answer{"$parts.foil.value.$foil"};
607: # }
608: # }
609: # return $symb;
610: return %Partdata;
1.1 stredwic 611: }
612:
1.23 matthew 613: 1;
1.1 stredwic 614:
615: __END__
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