Index: trunk/Ohana/src/opihi/cmd.astro/cplot.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.astro/cplot.c	(revision 20936)
+++ trunk/Ohana/src/opihi/cmd.astro/cplot.c	(revision 21153)
@@ -75,4 +75,5 @@
   }
   Xvec.Nelements = Npts;
+  Yvec.Nelements = Npts;
 
   graphmode.etype = 0;