part of the revert of 1.8 got botched

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33936 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/wxPython/wx/lib/plot.py b/wxPython/wx/lib/plot.py
index 24daba08e218bcd36f52f13679069c3fd6982a20..44196f234aab2169199b6d3375c6b7560534c4b2 100644 (file)
--- a/wxPython/wx/lib/plot.py
+++ b/wxPython/wx/lib/plot.py
@@ -689,9 +689,11 @@ class PlotCanvas(wx.Window):
     def ScrollUp(self, units):
         """Move view up number of axis units."""
         self.last_PointLabel = None        #reset pointLabel
-        if self.BeenDrawn():
-            self._drawCmd.scrollAxisY(units, self._ySpec)
-            self._draw()
+        if self.last_draw is not None:         
+             graphics, xAxis, yAxis= self.last_draw
+             yAxis= (yAxis[0]+units, yAxis[1]+units)
+             self.Draw(graphics,xAxis,yAxis)
+
         
     def GetXY(self,event):
         """Takes a mouse event and returns the XY user axis values."""