From e68a65a88905273f5b0a8717c3d2225f22bb2de6 Mon Sep 17 00:00:00 2001
From: Dima Kogan <dkogan@cds.caltech.edu>
Date: Sun, 28 Mar 2010 16:04:51 -0700
Subject: [PATCH] streaming redraw test no longer checks for $xlast, since if
 $haveNewData is set, $xlast is guaranteed to be set also.

---
 feedGnuplot.pl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/feedGnuplot.pl b/feedGnuplot.pl
index 41b5356..bd45590 100755
--- a/feedGnuplot.pl
+++ b/feedGnuplot.pl
@@ -351,8 +351,9 @@ sub mainThread {
         }
       }
 
-      elsif($options{"stream"} && defined $xlast)
+      elsif($options{"stream"})
       {
+        # only redraw a streaming plot if there's new data to plot
         next unless $haveNewData;
         $haveNewData = undef;