--- loncom/interface/statistics/lonproblemstatistics.pm	2003/03/26 21:47:47	1.45
+++ loncom/interface/statistics/lonproblemstatistics.pm	2003/03/26 21:55:18	1.46
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonproblemstatistics.pm,v 1.45 2003/03/26 21:47:47 matthew Exp $
+# $Id: lonproblemstatistics.pm,v 1.46 2003/03/26 21:55:18 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -658,6 +658,7 @@ sub plot_statistics {
                 }
                 push (@Results,$wrongpercent);
                 my $data = $Results[$fieldindex];
+                $data = 0 if ($data eq 'nan');
                 $Max = $data if ($Max<$data);
                 push (@Data,$data);
             }