More minor updates to histogramming

git-svn-id: http://svn.osgeo.org/qgis/trunk@2992 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/qgsrasterlayerproperties.cpp

@@ -1078,6 +1078,7 @@ void QgsRasterLayerProperties::pbnHistRefresh_clicked()
         myPainter.drawRect(myX+myYGutterWidth,myImageHeight-(myY+myXGutterHeight),myBarWidth,myY);
       }
       //store this point in our line too
+      myY = myGraphImageHeight - myY;
       myPointArray.setPoint(myBin, myX+myYGutterWidth, myY-myXGutterHeight);
     }
     //draw a line on the graph along the bar peaks;