[LON-CAPA-cvs] cvs: loncom /interface lonstatistics.pm /interface/statistics lonproblemanalysis.pm lonstathelpers.pm lonstudentsubmissions.pm doc/loncapafiles loncapafiles.lpml

matthew lon-capa-cvs@mail.lon-capa.org
Thu, 19 Feb 2004 20:17:01 -0000


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--matthew1077221821
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matthew		Thu Feb 19 15:17:01 2004 EDT

  Added files:                 
    /loncom/interface/statistics	lonstudentsubmissions.pm 

  Modified files:              
    /doc/loncapafiles	loncapafiles.lpml 
    /loncom/interface	lonstatistics.pm 
    /loncom/interface/statistics	lonproblemanalysis.pm 
                                	lonstathelpers.pm 
  Log:
  Added lonstudentsubmissions.pm
  Moved code from lonproblemanalysis to lonstathelpers and lonstudentsubmissions.
  lonstudentsubmissions can produce excel spreadsheets of student submissions
  for numerical, radio, option, click on image, string, and formula responses.
  
  
--matthew1077221821
Content-Type: text/plain
Content-Disposition: attachment; filename="matthew-20040219151701.txt"

Index: doc/loncapafiles/loncapafiles.lpml
diff -u doc/loncapafiles/loncapafiles.lpml:1.337 doc/loncapafiles/loncapafiles.lpml:1.338
--- doc/loncapafiles/loncapafiles.lpml:1.337	Wed Feb 18 03:07:15 2004
+++ doc/loncapafiles/loncapafiles.lpml	Thu Feb 19 15:17:01 2004
@@ -2,7 +2,7 @@
  "http://lpml.sourceforge.net/DTD/lpml.dtd">
 <!-- loncapafiles.lpml -->
 
-<!-- $Id: loncapafiles.lpml,v 1.337 2004/02/18 08:07:15 www Exp $ -->
+<!-- $Id: loncapafiles.lpml,v 1.338 2004/02/19 20:17:01 matthew Exp $ -->
 
 <!--
 
@@ -2441,6 +2441,15 @@
 <categoryname>handler</categoryname>
 <description>
 The module that generate the html for the Problem Statistics web pages.
+</description>
+</file>
+<file>
+<source>loncom/interface/statistics/lonstudentsubmissions.pm</source>
+<target dist='default'>home/httpd/lib/perl/Apache/lonstudentsubmissions.pm
+</target>
+<categoryname>handler</categoryname>
+<description>
+Generates excel file containing student submissions and correct answers.
 </description>
 </file>
 <file>
Index: loncom/interface/lonstatistics.pm
diff -u loncom/interface/lonstatistics.pm:1.96 loncom/interface/lonstatistics.pm:1.97
--- loncom/interface/lonstatistics.pm:1.96	Thu Feb 12 17:23:30 2004
+++ loncom/interface/lonstatistics.pm	Thu Feb 19 15:17:01 2004
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstatistics.pm,v 1.96 2004/02/12 22:23:30 matthew Exp $
+# $Id: lonstatistics.pm,v 1.97 2004/02/19 20:17:01 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -65,15 +65,18 @@
 use Apache::loncommon;
 use Apache::loncoursedata;
 use Apache::lonhtmlcommon;
+use Apache::lonmysql;
+use Apache::lonlocal;
+use Time::HiRes;
+#
+# Statistics Packages
 use Apache::lonproblemanalysis();
 use Apache::lonsubmissiontimeanalysis();
 use Apache::loncorrectproblemplot();
 use Apache::lonproblemstatistics();
 use Apache::lonstudentassessment();
 use Apache::lonpercentage;
-use Apache::lonmysql;
-use Apache::lonlocal;
-use Time::HiRes;
+use Apache::lonstudentsubmissions();
 
 #######################################################
 #######################################################
@@ -1028,6 +1031,11 @@
                      short_description => 
     &mt('Display and analysis of submission times on assessments.'),
                  },
+                   { internal_name => 'student_submission_reports',
+                     name => &mt('Student Submission Reports'),
+                     short_description => 
+    &mt('Prepare Excel spreadsheets of student submissions.'),
+                 },
                    { internal_name => 'correct_problems_plot',
                      name => &mt('Correct Problems Plot'),
                      short_description => 
@@ -1151,6 +1159,8 @@
             &Apache::lonproblemanalysis::BuildProblemAnalysisPage($r,$c);
         } elsif($GoToPage eq 'submissiontime_analysis') {
             &Apache::lonsubmissiontimeanalysis::BuildSubmissionTimePage($r,$c);
+        } elsif($GoToPage eq 'student_submission_reports') {
+            &Apache::lonstudentsubmissions::BuildStudentSubmissionsPage($r,$c);
         } elsif($GoToPage eq 'correct_problems_plot') {
             &Apache::loncorrectproblemplot::BuildCorrectProblemsPage($r,$c);
         } elsif($GoToPage eq 'student_assessment') {
Index: loncom/interface/statistics/lonproblemanalysis.pm
diff -u loncom/interface/statistics/lonproblemanalysis.pm:1.70 loncom/interface/statistics/lonproblemanalysis.pm:1.71
--- loncom/interface/statistics/lonproblemanalysis.pm:1.70	Wed Feb 18 14:16:55 2004
+++ loncom/interface/statistics/lonproblemanalysis.pm	Thu Feb 19 15:17:01 2004
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonproblemanalysis.pm,v 1.70 2004/02/18 19:16:55 matthew Exp $
+# $Id: lonproblemanalysis.pm,v 1.71 2004/02/19 20:17:01 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -33,7 +33,8 @@
 use Apache::loncoursedata();
 use Apache::lonstatistics;
 use Apache::lonlocal;
-use Apache::lonstathelpers;
+use Apache::lonstathelpers();
+use Apache::lonstudentsubmissions();
 use HTML::Entities();
 use Time::Local();
 use Spreadsheet::WriteExcel();
@@ -146,7 +147,8 @@
             $r->print('<h3>'.$resource->{'src'}.'</h3>');
             $r->print(&Apache::lonstathelpers::render_resource($resource));
             $r->rflush();
-            my %Data = &get_problem_data($resource->{'src'});
+            my %Data = &Apache::lonstathelpers::get_problem_data
+                ($resource->{'src'});
             my $ProblemData = $Data{$current_problem->{'part'}.
                                     '.'.
                                     $current_problem->{'respid'}};
@@ -160,8 +162,8 @@
                                        \@Students);
             } elsif ($current_problem->{'resptype'} eq 'numerical') {
 #                if (exists($ENV{'form.ExcelOutput'})) {
-                    &prepare_excel_output($r,$current_problem,
-                                          $ProblemData,\@Students);
+                    &Apache::lonstudentsubmissions::prepare_excel_output
+                        ($r,$current_problem,$ProblemData,\@Students);
 #                } else {
 #                    &NumericalResponseAnalysis($r,$current_problem,
 #                                               $ProblemData,\@Students);
@@ -185,136 +187,6 @@
 #########################################################
 #########################################################
 ##
-##      Excel output of student answers and correct answers
-##
-#########################################################
-#########################################################
-sub prepare_excel_output {
-    my ($r,$problem,$ProblemData,$Students) = @_;
-    my ($resource,$respid,$partid) = ($problem->{'resource'},
-                                      $problem->{'respid'},
-                                      $problem->{'part'});
-    $r->print('<h2>'.
-              &mt('Preparing Excel spreadsheet of student responses').
-              '</h2>');
-    #
-    &GetStudentAnswers($r,$problem,$Students);
-    #
-    my @Columns = ( 'username','domain','attempt','time',
-                    'submission','correct', 'grading','awarded','weight',
-                    'score');
-    my $awarded_col = 7;
-    my $weight_col  = 8;
-    #
-    # Create excel worksheet
-    my $filename = '/prtspool/'.
-        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
-        time.'_'.rand(1000000000).'.xls';
-    my $workbook  = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
-    if (! defined($workbook)) {
-        $r->log_error("Error creating excel spreadsheet $filename: $!");
-        $r->print('<p>'.&mt("Unable to create new Excel file.  ".
-                            "This error has been logged.  ".
-                            "Please alert your LON-CAPA administrator").
-                  '</p>');
-        return undef;
-    }
-    #
-    $workbook->set_tempdir('/home/httpd/perl/tmp');
-    #
-    my $format = &Apache::loncommon::define_excel_formats($workbook);
-    my $worksheet  = $workbook->addworksheet('Student Submission Data');
-    #
-    # Make sure we get new weight data instead of data on a 10 minute delay
-    &Apache::lonnet::clear_EXT_cache_status();
-    #
-    # Put on the standard headers and whatnot
-    my $rows_output=0;
-    $worksheet->write($rows_output++,0,$resource->{'title'},$format->{'h1'});
-    $worksheet->write($rows_output++,0,$resource->{'src'},$format->{'h3'});
-    $rows_output++;
-    $worksheet->write_row($rows_output++,0,\@Columns,$format->{'bold'});
-    #
-    # Populate the worksheet with the student data
-    foreach my $student (@$Students) {
-        my $results = &Apache::loncoursedata::get_response_data_by_student
-            ($student,$resource->{'symb'},$respid);
-        my %row;
-        $row{'username'} = $student->{'username'};
-        $row{'domain'}   = $student->{'domain'};
-        $row{'correct'} = $student->{'answer'};
-        $row{'weight'} = &Apache::lonnet::EXT
-            ('resource.'.$partid.'.weight',$resource->{'symb'},
-             undef,undef,undef);
-        if (! defined($results) || ref($results) ne 'ARRAY') {
-            $row{'score'} = '='.
-                &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
-                    ($rows_output,$awarded_col)
-                .'*'.
-                &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
-                    ($rows_output,$weight_col);
-            my $cols_output = 0;
-            foreach my $col (@Columns) {
-                if (! exists($row{$col})) {
-                    $cols_output++;
-                    next;
-                }
-                $worksheet->write($rows_output,$cols_output++,$row{$col});
-            }
-            $rows_output++;
-        } else {
-            foreach my $response (@$results) {
-                delete($row{'time'});
-                delete($row{'attempt'});
-                delete($row{'submission'});
-                delete($row{'awarded'});
-                delete($row{'grading'});
-                delete($row{'score'});
-                my %row_format;
-                #
-                # Time is handled differently
-                $row{'time'} = &calc_serial(
-                     $response->[&Apache::loncoursedata::RDs_timestamp()]);
-                $row_format{'time'}=$format->{'date'};
-                #
-                $row{'attempt'}  = $response->[
-                     &Apache::loncoursedata::RDs_tries()];
-                $row{'submission'} = $response->[
-                     &Apache::loncoursedata::RDs_submission()];
-                $row{'grading'} = $response->[
-                     &Apache::loncoursedata::RDs_awarddetail()];
-                $row{'awarded'} = $response->[
-                     &Apache::loncoursedata::RDs_awarded()];
-                $row{'score'} = '='.
-                    &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
-                        ($rows_output,$awarded_col)
-                    .'*'.
-                    &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
-                        ($rows_output,$weight_col);
-                my $cols_output = 0;
-                foreach my $col (@Columns) {
-                    $worksheet->write($rows_output,$cols_output++,$row{$col},
-                                      $row_format{$col});
-                }
-                $rows_output++;
-            }
-        } # End of else clause on if (! defined($results) ....
-    }
-    #
-    # Close the excel file
-    $workbook->close();
-    #
-    # Write a link to allow them to download it
-    $r->print('<p><a href="'.$filename.'">'.
-              &mt('Your Excel spreadsheet.').
-              '</a></p>'."\n");
-
-}
-
-
-#########################################################
-#########################################################
-##
 ##      Numerical Response Routines
 ##
 #########################################################
@@ -385,9 +257,8 @@
     foreach my $student (@$Students) {
         my $sname = $student->{'username'};
         my $sdom = $student->{'domain'};
-        my $answer = &analyze_problem_as_student($resource,
-                                                 $sname,$sdom,
-                                                 $partid,$respid);
+        my $answer = &Apache::lonstathelpers::analyze_problem_as_student
+            ($resource,$sname,$sdom,$partid,$respid);
         &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
                                                  &mt('last student'));
         $student->{'answer'} = $answer;
@@ -1258,7 +1129,7 @@
         }
         $worksheet->write($rows_output,$cols_output++,$student);
         $worksheet->write($rows_output,$cols_output++,
-                          &calc_serial($time),$format->{'date'});
+             &Apache::lonstathelpers::calc_serial($time),$format->{'date'});
         $worksheet->write($rows_output,$cols_output++,$award);
         $worksheet->write($rows_output,$cols_output++,$tries);
         foreach my $foilid (@$Foils) {
@@ -1273,185 +1144,6 @@
     return;
 }
 
-
-##
-## The following is copied from datecalc1.pl, part of the 
-## Spreadsheet::WriteExcel CPAN module.
-##
-##
-######################################################################
-#
-# Demonstration of writing date/time cells to Excel spreadsheets,
-# using UNIX/Perl time as source of date/time.
-#
-# Copyright 2000, Andrew Benham, adsb@bigfoot.com
-#
-######################################################################
-#
-# UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
-# measured in seconds.
-#
-# An Excel file can use exactly one of two different date/time systems.
-# In these systems, a floating point number represents the number of days
-# (and fractional parts of the day) since a start point. The floating point
-# number is referred to as a 'serial'.
-# The two systems ('1900' and '1904') use different starting points:
-#  '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
-#          a leap year - see:
-#            http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
-#          for the excuse^H^H^H^H^H^Hreason.
-#  '1904'; '1.00' is 2 Jan 1904.
-#
-# The '1904' system is the default for Apple Macs. Windows versions of
-# Excel have the option to use the '1904' system.
-#
-# Note that Visual Basic's "DateSerial" function does NOT erroneously
-# regard 1900 as a leap year, and thus its serials do not agree with
-# the 1900 serials of Excel for dates before 1 Mar 1900.
-#
-# Note that StarOffice (at least at version 5.2) does NOT erroneously
-# regard 1900 as a leap year, and thus its serials do not agree with
-# the 1900 serials of Excel for dates before 1 Mar 1900.
-#
-######################################################################
-#
-# Calculation description
-# =======================
-#
-# 1900 system
-# -----------
-# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
-# Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
-# were leap years with an extra day.
-# Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
-# 1 Jan 1970.
-# In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
-# 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
-#
-# 1904 system
-# -----------
-# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
-# Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
-# were leap years with an extra day.
-# Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
-# 1 Jan 1970.
-# In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
-#
-######################################################################
-#
-# Copyright (c) 2000, Andrew Benham.
-# This program is free software. It may be used, redistributed and/or
-# modified under the same terms as Perl itself.
-#
-# Andrew Benham, adsb@bigfoot.com
-# London, United Kingdom
-# 11 Nov 2000
-#
-######################################################################
-
-# Use 1900 date system on all platforms other than Apple Mac (for which
-# use 1904 date system).
-my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
-
-#-----------------------------------------------------------
-# calc_serial()
-#
-# Called with (up to) 2 parameters.
-#   1.  Unix timestamp.  If omitted, uses current time.
-#   2.  GMT flag. Set to '1' to return serial in GMT.
-#       If omitted, returns serial in appropriate timezone.
-#
-# Returns date/time serial according to $DATE_SYSTEM selected
-#-----------------------------------------------------------
-sub calc_serial {
-        my $time = (defined $_[0]) ? $_[0] : time();
-        my $gmtflag = (defined $_[1]) ? $_[1] : 0;
-
-        # Divide timestamp by number of seconds in a day.
-        # This gives a date serial with '0' on 1 Jan 1970.
-        my $serial = $time / 86400;
-
-        # Adjust the date serial by the offset appropriate to the
-        # currently selected system (1900/1904).
-        if ($DATE_SYSTEM == 0) {        # use 1900 system
-                $serial += 25569;
-        } else {                        # use 1904 system
-                $serial += 24107;
-        }
-
-        unless ($gmtflag) {
-                # Now have a 'raw' serial with the right offset. But this
-                # gives a serial in GMT, which is false unless the timezone
-                # is GMT. We need to adjust the serial by the appropriate
-                # timezone offset.
-                # Calculate the appropriate timezone offset by seeing what
-                # the differences between localtime and gmtime for the given
-                # time are.
-
-                my @gmtime = gmtime($time);
-                my @ltime  = localtime($time);
-
-                # For the first 7 elements of the two arrays, adjust the
-                # date serial where the elements differ.
-                for (0 .. 6) {
-                        my $diff = $ltime[$_] - $gmtime[$_];
-                        if ($diff) {
-                                $serial += _adjustment($diff,$_);
-                        }
-                }
-        }
-
-        # Perpetuate the error that 1900 was a leap year by decrementing
-        # the serial if we're using the 1900 system and the date is prior to
-        # 1 Mar 1900. This has the effect of making serial value '60'
-        # 29 Feb 1900.
-
-        # This fix only has any effect if UNIX/Perl time on the platform
-        # can represent 1900. Many can't.
-
-        unless ($DATE_SYSTEM) {
-                $serial-- if ($serial < 61);    # '61' is 1 Mar 1900
-        }
-        return $serial;
-}
-
-sub _adjustment {
-        # Based on the difference in the localtime/gmtime array elements
-        # number, return the adjustment required to the serial.
-
-        # We only look at some elements of the localtime/gmtime arrays:
-        #    seconds    unlikely to be different as all known timezones
-        #               have an offset of integral multiples of 15 minutes,
-        #               but it's easy to do.
-        #    minutes    will be different for timezone offsets which are
-        #               not an exact number of hours.
-        #    hours      very likely to be different.
-        #    weekday    will differ when localtime/gmtime difference
-        #               straddles midnight.
-        #
-        # Assume that difference between localtime and gmtime is less than
-        # 5 days, then don't have to do maths for day of month, month number,
-        # year number, etc...
-
-        my ($delta,$element) = @_;
-        my $adjust = 0;
-
-        if ($element == 0) {            # Seconds
-                $adjust = $delta/86400;         # 60 * 60 * 24
-        } elsif ($element == 1) {       # Minutes
-                $adjust = $delta/1440;          # 60 * 24
-        } elsif ($element == 2) {       # Hours
-                $adjust = $delta/24;            # 24
-        } elsif ($element == 6) {       # Day of week number
-                # Catch difference straddling Sat/Sun in either direction
-                $delta += 7 if ($delta < -4);
-                $delta -= 7 if ($delta > 4);
-
-                $adjust = $delta;
-        }
-        return $adjust;
-}
-
 sub build_foil_index {
     my ($ORdata) = @_;
     return if (! exists($ORdata->{'_Foils'}));
@@ -1762,84 +1454,6 @@
         $RowData{$foilid}->{'_total'}++;
     }
     return %RowData;
-}
-
-
-sub analyze_problem_as_student {
-    my ($resource,$sname,$sdom,$partid,$respid) = @_;
-    my $url = $resource->{'src'};
-    my $symb = $resource->{'symb'};
-    my $courseid = $ENV{'request.course.id'};
-    my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze',
-                                        'grade_domain' => $sdom,
-                                        'grade_username' => $sname,
-                                        'grade_symb' => $symb,
-                                        'grade_courseid' => $courseid));
-    (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
-    my %Answer=&Apache::lonnet::str2hash($Answ);
-    my $key = $partid.'.'.$respid.'.answer';
-    my $student_answer = $Answer{$key}->[0];
-    if (! defined($student_answer)) {
-        $student_answer = $Answer{$key}->[1];
-    }
-    return ($student_answer);
-}
-
-##
-## get problem data and put it into a useful data structure.
-## note: we must force each foil and option to not begin or end with
-##       spaces as they are stored without such data.
-##
-sub get_problem_data {
-    my ($url) = @_;
-    my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
-    (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
-    my %Answer;
-    %Answer=&Apache::lonnet::str2hash($Answ);
-    my %Partdata;
-    foreach my $part (@{$Answer{'parts'}}) {
-        while (my($key,$value) = each(%Answer)) {
-            #
-            # Logging code:
-            if (0) {
-                &Apache::lonnet::logthis($part.' got key "'.$key.'"');
-                if (ref($value) eq 'ARRAY') {
-                    &Apache::lonnet::logthis('    '.join(',',@$value));
-                } else {
-                    &Apache::lonnet::logthis('    '.$value);
-                }
-            }
-            # End of logging code
-            next if ($key !~ /^$part/);
-            $key =~ s/^$part\.//;
-            if (ref($value) eq 'ARRAY') {
-                if ($key eq 'options') {
-                    $Partdata{$part}->{'_Options'}=$value;
-                } elsif ($key eq 'concepts') {
-                    $Partdata{$part}->{'_Concepts'}=$value;
-                } elsif ($key =~ /^concept\.(.*)$/) {
-                    my $concept = $1;
-                    foreach my $foil (@$value) {
-                        $Partdata{$part}->{'_Foils'}->{$foil}->{'_Concept'}=
-                                                                      $concept;
-                    }
-                } elsif ($key =~ /^(incorrect|answer|ans_low|ans_high)$/) {
-                    $Partdata{$part}->{$key}=$value;
-                }
-            } else {
-                if ($key=~ /^foil\.text\.(.*)$/) {
-                    my $foil = $1;
-                    $Partdata{$part}->{'_Foils'}->{$foil}->{'name'}=$foil;
-                    $value =~ s/(\s*$|^\s*)//g;
-                    $Partdata{$part}->{'_Foils'}->{$foil}->{'text'}=$value;
-                } elsif ($key =~ /^foil\.value\.(.*)$/) {
-                    my $foil = $1;
-                    $Partdata{$part}->{'_Foils'}->{$foil}->{'value'}=$value;
-                }
-            }
-        }
-    }
-    return %Partdata;
 }
 
 1;
Index: loncom/interface/statistics/lonstathelpers.pm
diff -u loncom/interface/statistics/lonstathelpers.pm:1.3 loncom/interface/statistics/lonstathelpers.pm:1.4
--- loncom/interface/statistics/lonstathelpers.pm:1.3	Fri Feb 13 13:34:40 2004
+++ loncom/interface/statistics/lonstathelpers.pm	Thu Feb 19 15:17:01 2004
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstathelpers.pm,v 1.3 2004/02/13 18:34:40 matthew Exp $
+# $Id: lonstathelpers.pm,v 1.4 2004/02/19 20:17:01 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -335,6 +335,322 @@
         $next = $Resource[$curr_idx+1];
     }
     return ($prev,$curr,$next);
+}
+
+
+#####################################################
+#####################################################
+
+=pod
+
+=item analyze_problem_as_student
+
+Analyzes a homework problem for a student and returns the correct answer
+for the student.  Attempts to put together an answer for problem types 
+that do not natively support it.
+
+Inputs: $resource: a resource object
+        $sname, $sdom, $partid, $respid
+
+Returns: $answer
+
+=cut
+
+#####################################################
+#####################################################
+sub analyze_problem_as_student {
+    my ($resource,$sname,$sdom,$partid,$respid) = @_;
+    my $returnvalue;
+    my $url = $resource->{'src'};
+    my $symb = $resource->{'symb'};
+    my $courseid = $ENV{'request.course.id'};
+    my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze',
+                                        'grade_domain' => $sdom,
+                                        'grade_username' => $sname,
+                                        'grade_symb' => $symb,
+                                        'grade_courseid' => $courseid));
+    (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
+    my %Answer=&Apache::lonnet::str2hash($Answ);
+    my $prefix = $partid.'.'.$respid;
+    my $key = $prefix.'.answer';
+    if (exists($Answer{$key})) {
+        my $student_answer = $Answer{$key}->[0];
+        if (! defined($student_answer)) {
+            $student_answer = $Answer{$key}->[1];
+        }
+        $returnvalue = $student_answer;
+    } else {
+        if (exists($Answer{$prefix.'.shown'})) {
+            # The response has foils
+            my %values;
+            while (my ($k,$v) = each(%Answer)) {
+                next if ($k !~ /^$prefix\.foil\.(value|area)\.(.*)$/);
+                my $foilname = $2;
+                $values{$foilname}=$v;
+            }
+            foreach my $foil (@{$Answer{$prefix.'.shown'}}) {
+                if (ref($values{$foil}) eq 'ARRAY') {
+                    $returnvalue.=&HTML::Entities::encode($foil).'='.
+                        join(',',map {&HTML::Entities::encode($_)} @{$values{$foil}}).'&';
+                } else {
+                    $returnvalue.=&HTML::Entities::encode($foil).'='.
+                        &HTML::Entities::encode($values{$foil}).'&';
+                }
+            }
+            $returnvalue =~ s/ /\%20/g;
+            chop ($returnvalue);
+        }
+    }
+    return $returnvalue;
+}
+
+
+##
+## The following is copied from datecalc1.pl, part of the 
+## Spreadsheet::WriteExcel CPAN module.
+##
+##
+######################################################################
+#
+# Demonstration of writing date/time cells to Excel spreadsheets,
+# using UNIX/Perl time as source of date/time.
+#
+# Copyright 2000, Andrew Benham, adsb@bigfoot.com
+#
+######################################################################
+#
+# UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
+# measured in seconds.
+#
+# An Excel file can use exactly one of two different date/time systems.
+# In these systems, a floating point number represents the number of days
+# (and fractional parts of the day) since a start point. The floating point
+# number is referred to as a 'serial'.
+# The two systems ('1900' and '1904') use different starting points:
+#  '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
+#          a leap year - see:
+#            http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
+#          for the excuse^H^H^H^H^H^Hreason.
+#  '1904'; '1.00' is 2 Jan 1904.
+#
+# The '1904' system is the default for Apple Macs. Windows versions of
+# Excel have the option to use the '1904' system.
+#
+# Note that Visual Basic's "DateSerial" function does NOT erroneously
+# regard 1900 as a leap year, and thus its serials do not agree with
+# the 1900 serials of Excel for dates before 1 Mar 1900.
+#
+# Note that StarOffice (at least at version 5.2) does NOT erroneously
+# regard 1900 as a leap year, and thus its serials do not agree with
+# the 1900 serials of Excel for dates before 1 Mar 1900.
+#
+######################################################################
+#
+# Calculation description
+# =======================
+#
+# 1900 system
+# -----------
+# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
+# Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
+# were leap years with an extra day.
+# Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
+# 1 Jan 1970.
+# In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
+# 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
+#
+# 1904 system
+# -----------
+# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
+# Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
+# were leap years with an extra day.
+# Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
+# 1 Jan 1970.
+# In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
+#
+######################################################################
+#
+# Copyright (c) 2000, Andrew Benham.
+# This program is free software. It may be used, redistributed and/or
+# modified under the same terms as Perl itself.
+#
+# Andrew Benham, adsb@bigfoot.com
+# London, United Kingdom
+# 11 Nov 2000
+#
+######################################################################
+#-----------------------------------------------------------
+# calc_serial()
+#
+# Called with (up to) 2 parameters.
+#   1.  Unix timestamp.  If omitted, uses current time.
+#   2.  GMT flag. Set to '1' to return serial in GMT.
+#       If omitted, returns serial in appropriate timezone.
+#
+# Returns date/time serial according to $DATE_SYSTEM selected
+#-----------------------------------------------------------
+sub calc_serial {
+    # Use 1900 date system on all platforms other than Apple Mac (for which
+    # use 1904 date system).
+    my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
+    my $time = (defined $_[0]) ? $_[0] : time();
+    my $gmtflag = (defined $_[1]) ? $_[1] : 0;
+    #
+    # Divide timestamp by number of seconds in a day.
+    # This gives a date serial with '0' on 1 Jan 1970.
+    my $serial = $time / 86400;
+    #
+    # Adjust the date serial by the offset appropriate to the
+    # currently selected system (1900/1904).
+    if ($DATE_SYSTEM == 0) {        # use 1900 system
+        $serial += 25569;
+    } else {                        # use 1904 system
+        $serial += 24107;
+    }
+    #
+    unless ($gmtflag) {
+        # Now have a 'raw' serial with the right offset. But this
+        # gives a serial in GMT, which is false unless the timezone
+        # is GMT. We need to adjust the serial by the appropriate
+        # timezone offset.
+        # Calculate the appropriate timezone offset by seeing what
+        # the differences between localtime and gmtime for the given
+        # time are.
+        #    
+        my @gmtime = gmtime($time);
+        my @ltime  = localtime($time);
+        #
+        # For the first 7 elements of the two arrays, adjust the
+        # date serial where the elements differ.
+        for (0 .. 6) {
+            my $diff = $ltime[$_] - $gmtime[$_];
+            if ($diff) {
+                $serial += _adjustment($diff,$_);
+            }
+        }
+    }
+    #
+    # Perpetuate the error that 1900 was a leap year by decrementing
+    # the serial if we're using the 1900 system and the date is prior to
+    # 1 Mar 1900. This has the effect of making serial value '60'
+    # 29 Feb 1900.
+    #
+    # This fix only has any effect if UNIX/Perl time on the platform
+    # can represent 1900. Many can't.
+    #
+    unless ($DATE_SYSTEM) {
+        $serial-- if ($serial < 61);    # '61' is 1 Mar 1900
+    }
+    return $serial;
+}
+
+sub _adjustment {
+    # Based on the difference in the localtime/gmtime array elements
+    # number, return the adjustment required to the serial.
+    #
+    # We only look at some elements of the localtime/gmtime arrays:
+    #    seconds    unlikely to be different as all known timezones
+    #               have an offset of integral multiples of 15 minutes,
+    #               but it's easy to do.
+    #    minutes    will be different for timezone offsets which are
+    #               not an exact number of hours.
+    #    hours      very likely to be different.
+    #    weekday    will differ when localtime/gmtime difference
+    #               straddles midnight.
+    #
+    # Assume that difference between localtime and gmtime is less than
+    # 5 days, then don't have to do maths for day of month, month number,
+    # year number, etc...
+    #
+    my ($delta,$element) = @_;
+    my $adjust = 0;
+    #
+    if ($element == 0) {            # Seconds
+        $adjust = $delta/86400;         # 60 * 60 * 24
+    } elsif ($element == 1) {       # Minutes
+        $adjust = $delta/1440;          # 60 * 24
+    } elsif ($element == 2) {       # Hours
+        $adjust = $delta/24;            # 24
+    } elsif ($element == 6) {       # Day of week number
+        # Catch difference straddling Sat/Sun in either direction
+        $delta += 7 if ($delta < -4);
+        $delta -= 7 if ($delta > 4);
+        #    
+        $adjust = $delta;
+    }
+    return $adjust;
+}
+
+###########################################################
+###########################################################
+
+=pod
+
+=item get_problem_data
+
+Returns a data structure describing the problem.
+
+Inputs: $url
+
+Returns: %Partdata
+
+=cut
+
+## note: we must force each foil and option to not begin or end with
+##       spaces as they are stored without such data.
+##
+###########################################################
+###########################################################
+sub get_problem_data {
+    my ($url) = @_;
+    my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
+    (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
+    my %Answer;
+    %Answer=&Apache::lonnet::str2hash($Answ);
+    my %Partdata;
+    foreach my $part (@{$Answer{'parts'}}) {
+        while (my($key,$value) = each(%Answer)) {
+            #
+            # Logging code:
+            if (1) {
+                &Apache::lonnet::logthis($part.' got key "'.$key.'"');
+                if (ref($value) eq 'ARRAY') {
+                    &Apache::lonnet::logthis('    @'.join(',',@$value));
+                } else {
+                    &Apache::lonnet::logthis('    '.$value);
+                }
+            }
+            # End of logging code
+            next if ($key !~ /^$part/);
+            $key =~ s/^$part\.//;
+            if (ref($value) eq 'ARRAY') {
+                if ($key eq 'options') {
+                    $Partdata{$part}->{'_Options'}=$value;
+                } elsif ($key eq 'concepts') {
+                    $Partdata{$part}->{'_Concepts'}=$value;
+                } elsif ($key =~ /^concept\.(.*)$/) {
+                    my $concept = $1;
+                    foreach my $foil (@$value) {
+                        $Partdata{$part}->{'_Foils'}->{$foil}->{'_Concept'}=
+                                                                      $concept;
+                    }
+                } elsif ($key =~ /^(incorrect|answer|ans_low|ans_high)$/) {
+                    $Partdata{$part}->{$key}=$value;
+                }
+            } else {
+                if ($key=~ /^foil\.text\.(.*)$/) {
+                    my $foil = $1;
+                    $Partdata{$part}->{'_Foils'}->{$foil}->{'name'}=$foil;
+                    $value =~ s/(\s*$|^\s*)//g;
+                    $Partdata{$part}->{'_Foils'}->{$foil}->{'text'}=$value;
+                } elsif ($key =~ /^foil\.value\.(.*)$/) {
+                    my $foil = $1;
+                    $Partdata{$part}->{'_Foils'}->{$foil}->{'value'}=$value;
+                }
+            }
+        }
+    }
+    return %Partdata;
 }
 
 ####################################################

Index: loncom/interface/statistics/lonstudentsubmissions.pm
+++ loncom/interface/statistics/lonstudentsubmissions.pm
# The LearningOnline Network with CAPA
#
# $Id: lonstudentsubmissions.pm,v 1.1 2004/02/19 20:17:01 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
package Apache::lonstudentsubmissions;

use strict;
use Apache::lonnet();
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::loncoursedata();
use Apache::lonstatistics;
use Apache::lonlocal;
use Apache::lonstathelpers;
use HTML::Entities();
use Time::Local();
use Spreadsheet::WriteExcel();

my @SubmitButtons = ({ name => 'PrevProblem',
                       text => 'Previous Problem' },
                     { name => 'NextProblem',
                       text => 'Next Problem' },
                     { name => 'break'},
                     { name => 'ClearCache',
                       text => 'Clear Caches' },
                     { name => 'updatecaches',
                       text => 'Update Student Data' },
                     { name => 'SelectAnother',
                       text => 'Choose a different Problem' },
                     { name => 'Generate',
                       text => 'Generate Spreadsheet'},
                     );

sub BuildStudentSubmissionsPage {
    my ($r,$c)=@_;
    #
    my %Saveable_Parameters = ('Status' => 'scalar',
                               'Section' => 'array',
                               'NumPlots' => 'scalar',
                               );
    &Apache::loncommon::store_course_settings('student_submissions',
                                              \%Saveable_Parameters);
    &Apache::loncommon::restore_course_settings('student_submissions',
                                                \%Saveable_Parameters);
    #
    &Apache::lonstatistics::PrepareClasslist();
    #
    $r->print('<h2>'.&mt('Student Submissions Report').'</h2>');
    $r->print(&CreateInterface());
    #
    my @Students = @Apache::lonstatistics::Students;
    #
    if (@Students < 1) {
        $r->print('<h2>There are no students in the sections selected</h2>');
    }
    #
    &Apache::loncoursedata::clear_internal_caches();
    if (exists($ENV{'form.ClearCache'}) || 
        exists($ENV{'form.updatecaches'}) ||
        (exists($ENV{'form.firstanalysis'}) &&
         $ENV{'form.firstanalysis'} ne 'no')) {
        &Apache::lonstatistics::Gather_Full_Student_Data($r);
    }
    if (! exists($ENV{'form.firstanalysis'})) {
        $r->print('<input type="hidden" name="firstanalysis" value="yes" />');
    } else {
        $r->print('<input type="hidden" name="firstanalysis" value="no" />');
    }
    $r->rflush();
    #
    if (exists($ENV{'form.problemchoice'}) && 
        ! exists($ENV{'form.SelectAnother'})) {
        foreach my $button (@SubmitButtons) {
            if ($button->{'name'} eq 'break') {
                $r->print("<br />\n");
            } else {
                $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
                          'value="'.&mt($button->{'text'}).'" />');
                $r->print('&nbsp;'x5);
            }
        }
        #
        $r->print('<hr />');
        $r->rflush();
        #
        # Determine which problem we are to analyze
        my $current_problem = &Apache::lonstathelpers::get_target_from_id
            ($ENV{'form.problemchoice'});
        #
        my ($prev,$curr,$next) = 
            &Apache::lonstathelpers::get_prev_curr_next($current_problem,
                                                        '.',
                                                        'response',
                                                        );
        if (exists($ENV{'form.PrevProblem'}) && defined($prev)) {
            $current_problem = $prev;
        } elsif (exists($ENV{'form.NextProblem'}) && defined($next)) {
            $current_problem = $next;
        } else {
            $current_problem = $curr;
        }
        #
        # Store the current problem choice and send it out in the form
        $ENV{'form.problemchoice'} = 
            &Apache::lonstathelpers::make_target_id($current_problem);
        $r->print('<input type="hidden" name="problemchoice" value="'.
                  $ENV{'form.problemchoice'}.'" />');
        #
        if (! defined($current_problem->{'resource'})) {
            $r->print('resource is undefined');
        } else {
            my $resource = $current_problem->{'resource'};
            $r->print('<h1>'.$resource->{'title'}.'</h1>');
            $r->print('<h3>'.$resource->{'src'}.'</h3>');
            $r->print(&Apache::lonstathelpers::render_resource($resource));
            $r->rflush();
            my %Data = &Apache::lonstathelpers::get_problem_data
                ($resource->{'src'});
            my $ProblemData = $Data{$current_problem->{'part'}.
                                    '.'.
                                    $current_problem->{'respid'}};
            &prepare_excel_output($r,$current_problem,
                                  $ProblemData,\@Students);
        }
        $r->print('<hr />');
    } else {
        $r->print('<input type="submit" name="Generate" value="'.
                  &mt('Generate Spreadsheet').'" />');
        $r->print('&nbsp;'x5);
        $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
        $r->print(&Apache::lonstathelpers::ProblemSelector('.'));
    }
}


#########################################################
#########################################################
##
##      Excel output of student answers and correct answers
##
#########################################################
#########################################################
sub prepare_excel_output {
    my ($r,$problem,$ProblemData,$Students) = @_;
    my ($resource,$respid,$partid) = ($problem->{'resource'},
                                      $problem->{'respid'},
                                      $problem->{'part'});
    $r->print('<h2>'.
              &mt('Preparing Excel spreadsheet of student responses').
              '</h2>');
    #
    &GetStudentAnswers($r,$problem,$Students);
    #
    my @Columns = ( 'username','domain','attempt','time',
                    'submission','correct', 'grading','awarded','weight',
                    'score');
    my $awarded_col = 7;
    my $weight_col  = 8;
    #
    # Create excel worksheet
    my $filename = '/prtspool/'.
        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
        time.'_'.rand(1000000000).'.xls';
    my $workbook  = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
    if (! defined($workbook)) {
        $r->log_error("Error creating excel spreadsheet $filename: $!");
        $r->print('<p>'.&mt("Unable to create new Excel file.  ".
                            "This error has been logged.  ".
                            "Please alert your LON-CAPA administrator").
                  '</p>');
        return undef;
    }
    #
    $workbook->set_tempdir('/home/httpd/perl/tmp');
    #
    my $format = &Apache::loncommon::define_excel_formats($workbook);
    my $worksheet  = $workbook->addworksheet('Student Submission Data');
    #
    # Make sure we get new weight data instead of data on a 10 minute delay
    &Apache::lonnet::clear_EXT_cache_status();
    #
    # Put on the standard headers and whatnot
    my $rows_output=0;
    $worksheet->write($rows_output++,0,$resource->{'title'},$format->{'h1'});
    $worksheet->write($rows_output++,0,$resource->{'src'},$format->{'h3'});
    $rows_output++;
    $worksheet->write_row($rows_output++,0,\@Columns,$format->{'bold'});
    #
    # Populate the worksheet with the student data
    foreach my $student (@$Students) {
        my $results = &Apache::loncoursedata::get_response_data_by_student
            ($student,$resource->{'symb'},$respid);
        my %row;
        $row{'username'} = $student->{'username'};
        $row{'domain'}   = $student->{'domain'};
        $row{'correct'} = $student->{'answer'};
        $row{'weight'} = &Apache::lonnet::EXT
            ('resource.'.$partid.'.weight',$resource->{'symb'},
             undef,undef,undef);
        if (! defined($results) || ref($results) ne 'ARRAY') {
            $row{'score'} = '='.
                &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
                    ($rows_output,$awarded_col)
                .'*'.
                &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
                    ($rows_output,$weight_col);
            my $cols_output = 0;
            foreach my $col (@Columns) {
                if (! exists($row{$col})) {
                    $cols_output++;
                    next;
                }
                $worksheet->write($rows_output,$cols_output++,$row{$col});
            }
            $rows_output++;
        } else {
            foreach my $response (@$results) {
                delete($row{'time'});
                delete($row{'attempt'});
                delete($row{'submission'});
                delete($row{'awarded'});
                delete($row{'grading'});
                delete($row{'score'});
                my %row_format;
                #
                # Time is handled differently
                $row{'time'} = &Apache::lonstathelpers::calc_serial
                    ($response->[&Apache::loncoursedata::RDs_timestamp()]);
                $row_format{'time'}=$format->{'date'};
                #
                $row{'attempt'}  = $response->[
                     &Apache::loncoursedata::RDs_tries()];
                $row{'submission'} = $response->[
                     &Apache::loncoursedata::RDs_submission()];
                if ($row{'submission'} =~ m/^=/) {
                    # This will be interpreted as a formula.  That is bad!
                    $row{'submission'} = " ".$row{'submission'};
                }
                $row{'grading'} = $response->[
                     &Apache::loncoursedata::RDs_awarddetail()];
                $row{'awarded'} = $response->[
                     &Apache::loncoursedata::RDs_awarded()];
                $row{'score'} = '='.
                    &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
                        ($rows_output,$awarded_col)
                    .'*'.
                    &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
                        ($rows_output,$weight_col);
                my $cols_output = 0;
                foreach my $col (@Columns) {
                    $worksheet->write($rows_output,$cols_output++,$row{$col},
                                      $row_format{$col});
                }
                $rows_output++;
            }
        } # End of else clause on if (! defined($results) ....
    }
    #
    # Close the excel file
    $workbook->close();
    #
    # Write a link to allow them to download it
    $r->print('<p><a href="'.$filename.'">'.
              &mt('Your Excel spreadsheet.').
              '</a></p>'."\n");
}

sub GetStudentAnswers {
    my ($r,$problem,$Students) = @_;
    my %Answers;
    my ($resource,$partid,$respid) = ($problem->{'resource'},
                                      $problem->{'part'},
                                      $problem->{'respid'});
    # Open progress window
    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
        ($r,'Student Answer Compilation Status',
         'Student Answer Compilation Progress', scalar(@$Students));
    $r->print("<table>\n");
    $r->rflush();
    foreach my $student (@$Students) {
        my $sname = $student->{'username'};
        my $sdom = $student->{'domain'};
        my $answer = &Apache::lonstathelpers::analyze_problem_as_student
            ($resource,$sname,$sdom,$partid,$respid);
        &Apache::lonnet::logthis('answer = "'.$answer.'"');
        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
                                                 &mt('last student'));
        $student->{'answer'} = $answer;
    }
    $r->print("</table>\n");
    $r->rflush();
    # close progress window
    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
    return;
}


#########################################################
#########################################################
##
##   Generic Interface Routines
##
#########################################################
#########################################################
sub CreateInterface {
    ##
    ## Environment variable initialization
    my $Str = '';
    $Str .= '<table cellspacing="5">'."\n";
    $Str .= '<tr>';
    $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
    $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
    $Str .= '<td align="center">&nbsp;</td>';
    $Str .= '</tr>'."\n";
    ##
    ## 
    $Str .= '<tr><td align="center">'."\n";
    $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
    $Str .= '</td>';
    #
    $Str .= '<td align="center">';
    $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
    $Str .= '</td>';
    #
    my $only_seq_with_assessments = sub { 
        my $s=shift;
        if ($s->{'num_assess'} < 1) { 
            return 0;
        } else { 
            return 1;
        }
    };
    ##
    ##
    $Str .= '</tr>'."\n";
    $Str .= '</table>'."\n";
    #
    # We do this to make sure the sequence information is initialized
    &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
                                              $only_seq_with_assessments);
    
    #
    return $Str;
}



1;

__END__

--matthew1077221821--