[Pspp-cvs] Changes to pspp/src/plot-hist.c

[John Darrington]

Index: pspp/src/plot-hist.c
diff -u pspp/src/plot-hist.c:1.6 pspp/src/plot-hist.c:1.7
--- pspp/src/plot-hist.c:1.6    Sun Jul 31 21:42:46 2005
+++ pspp/src/plot-hist.c        Mon Oct 24 01:02:34 2005
@@ -41,7 +41,7 @@
 {
   char buf[100];
   if ( !ch )
-         return ;
+    return ;
 
   pl_savestate_r(ch->lp);
 
@@ -121,13 +121,21 @@
   
   struct chart *ch;
 
-  bins = gsl_histogram_bins(hist);
-
   ch = chart_create();
   chart_write_title(ch, _("HISTOGRAM"));
 
   chart_write_ylabel(ch, _("Frequency"));
   chart_write_xlabel(ch, factorname);
+
+  if ( ! hist ) /* If this happens, probably all values are SYSMIS */
+    {
+      chart_submit(ch);
+      return ;
+    }
+  else
+    {
+      bins = gsl_histogram_bins(hist);
+    }
 
   chart_write_yscale(ch, 0, gsl_histogram_max_val(hist), 5);