diff --git a/example/gnuplot_ex.cpp b/example/gnuplot_ex.cpp
index d689705..4f19df6 100644
--- a/example/gnuplot_ex.cpp
+++ b/example/gnuplot_ex.cpp
@@ -34,6 +34,7 @@ int main(int argc, char *argv[])
     //gt.send("plot [-pi/2:pi] cos(x),-(sin(x) > sin(x+1) ? sin(x) : sin(x+1))");
 
     //buffer test (bessel animation)
+    /*
     gt.to_buffer();
     gt.send("set terminal gif animate delay 10 size 600,400");
     gt.send("set output 'bessel.gif'");
@@ -66,5 +67,17 @@ int main(int argc, char *argv[])
 
     gt.save_buffer("bessel");
     gt.send_buffer();
+    */
+
+    //data test
+    gt.to_buffer();
+    gt.send("$Data << EOD");
+    gt.send("0 0 0");
+    gt.send("1 1 0.5");
+    gt.send("2 4 2");
+    gt.send("3 9 3");
+    gt.send("EOD");
+    gt.send("plot $Data using 1:2 with lines title 'y1', '' using 1:3 with lines title 'y2'");
+    gt.send_buffer();
     return 0;
 }