--- a/GraphicViewer.py	Mon Sep 21 12:06:15 2009 +0200
+++ b/GraphicViewer.py	Mon Sep 21 12:06:51 2009 +0200
@@ -214,6 +214,9 @@
     def SelectAll(self):
         pass
     
+    def ClearErrors(self):
+        pass
+    
     def NewValue(self, tick, value):
         self.Datas.append((float(tick), {True:1., False:0.}.get(value, float(value))))
         if self.CurrentValue + self.CurrentRange == len(self.Datas) - 1: