--- loncom/interface/statistics/lonsubmissiontimeanalysis.pm	2020/11/12 00:31:19	1.35.2.3
+++ loncom/interface/statistics/lonsubmissiontimeanalysis.pm	2020/11/18 15:31:40	1.38
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonsubmissiontimeanalysis.pm,v 1.35.2.3 2020/11/12 00:31:19 raeburn Exp $
+# $Id: lonsubmissiontimeanalysis.pm,v 1.38 2020/11/18 15:31:40 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -31,6 +31,7 @@ use strict;
 use Apache::lonnet;
 use Apache::loncommon();
 use Apache::lonhtmlcommon();
+use Apache::lonquickgrades();
 use Apache::loncoursedata();
 use Apache::lonstatistics;
 use Apache::lonstathelpers;
@@ -67,6 +68,7 @@ sub BuildSubmissionTimePage {
     &Apache::lonstatistics::PrepareClasslist();    
     #
     $r->print(&Apache::lonhtmlcommon::breadcrumbs('Submission Time Plots'));
+    &Apache::lonquickgrades::startGradeScreen($r,'statistics');
     $r->print(&CreateInterface());
     #
     my @Students = @Apache::lonstatistics::Students;
@@ -223,7 +225,7 @@ sub analyze_times {
     my @Ydata=(0);      # number of submissions
     my @AnsData=(0);    # number of correct submissions
     my @Xlabel=($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?
     #
@@ -235,7 +237,7 @@ 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;
@@ -257,7 +259,7 @@ 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;