ImageItem informs ViewBox when its size changes

Minor edits

pyqtgraph/graphicsItems/ImageItem.py

@@ -196,10 +196,12 @@ class ImageItem(GraphicsObject):
                 return
         else:
             gotNewData = True
-            if self.image is None or image.shape != self.image.shape:
-                self.prepareGeometryChange()
+            shapeChanged = (self.image is None or image.shape != self.image.shape)
             self.image = image.view(np.ndarray)
-            
+            if shapeChanged:
+                self.prepareGeometryChange()
+                self.informViewBoundsChanged()
+                
         prof.mark('1')
             
         if autoLevels is None:

pyqtgraph/graphicsItems/LegendItem.py

@@ -92,7 +92,6 @@ class LegendItem(GraphicsWidget, GraphicsWidgetAnchor):
         # Thanks, Ulrich!
         # cycle for a match
         for sample, label in self.items:
-            print label.text, name
             if label.text == name:  # hit
                 self.items.remove( (sample, label) )    # remove from itemlist
                 self.layout.removeItem(sample)          # remove from layout

pyqtgraph/graphicsItems/ScatterPlotItem.py

@@ -35,6 +35,8 @@ for k, c in coords.items():
 
     
 def drawSymbol(painter, symbol, size, pen, brush):
+    if symbol is None:
+        return
     painter.scale(size, size)
     painter.setPen(pen)
     painter.setBrush(brush)