--- loncom/interface/statistics/lonsubmissiontimeanalysis.pm	2012/12/17 02:22:12	1.35.2.2
+++ loncom/interface/statistics/lonsubmissiontimeanalysis.pm	2020/11/18 15:38:56	1.35.2.4
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonsubmissiontimeanalysis.pm,v 1.35.2.2 2012/12/17 02:22:12 raeburn Exp $
+# $Id: lonsubmissiontimeanalysis.pm,v 1.35.2.4 2020/11/18 15:38:56 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -103,20 +103,9 @@ sub BuildSubmissionTimePage {
         $r->rflush();
         #
         # Determine which problem we are to analyze
-        my $current_problem = &Apache::lonstathelpers::get_target_from_id
-            ($env{'form.problemchoice'});
-        #
-        my ($navmap,$prev,$curr,$next) = 
-            &Apache::lonstathelpers::get_prev_curr_next($current_problem,
-                                                        '.',
-                                                        'part');
-        if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
-            $current_problem = $prev;
-        } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
-            $current_problem = $next;
-        } else {
-            $current_problem = $curr;
-        }
+        my ($navmap,$current_problem) = &get_current_problem(); # need to retrieve $navmap
+                                                                # to support $resource->* calls
+                                                                # for src and compTitle (below)
         #
         # Store the current problem choice and send it out in the form
         $env{'form.problemchoice'} = 
@@ -152,6 +141,23 @@ sub BuildSubmissionTimePage {
     }
 }
 
+sub get_current_problem {
+    my $current_problem = &Apache::lonstathelpers::get_target_from_id
+        ($env{'form.problemchoice'});
+    my ($navmap,$prev,$curr,$next) =
+        &Apache::lonstathelpers::get_prev_curr_next($current_problem,
+                                                    '.',
+                                                    'part');
+    if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
+        $current_problem = $prev;
+    } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
+        $current_problem = $next;
+    } else {
+        $current_problem = $curr;
+    }
+    return ($navmap,$current_problem);
+}
+
 #########################################################
 #########################################################
 ##
@@ -217,7 +223,7 @@ sub analyze_times {
     my @Ydata=(0);      # number of submissions
     my @AnsData=(0);    # number of correct submissions
     my @Xlabel=($WeekDay[$wday]); # Labels of itmes
-    my @BinEnd;                   # The end time of each bin
+    my @BinEnd=($endtime);        # The end time of each bin
     my $cumulative_answers = 0;   # The sum of @AnsData
     my %students;       # which students have attempted the problem?
     #
@@ -229,7 +235,7 @@ sub analyze_times {
             $Ydata[$bincount]   = 0;
             $AnsData[$bincount] = 0;
             $endtime += $binsize;
-            push(@BinEnd,$endtime);
+            $BinEnd[$bincount] = $endtime;
             if ($bincount % (86400/$binsize) == 0) {
                 $wday++;
                 $wday %= 7;
@@ -251,7 +257,7 @@ sub analyze_times {
         $Ydata[$bincount]=0;
         $AnsData[$bincount]=0;
         $endtime += $binsize;
-        push(@BinEnd,$endtime);
+        $BinEnd[$bincount]=$endtime;
         if ($bincount % (86400/$binsize) == 0) {
             $wday ++;
             $wday %= 7;