Force repaint of wxPython Window, wxmpl plot

Question

I'm having problems getting my wxPython window to refresh. It's currently plotting a graph using wxmpl which can be zoomed, panned, etc. On occasion the user may plot a large amount of data and zoom in on a small portion, which can cause it to 'freeze up'. By that I mean the plot itself is not updated, and the axis labels are drawn on top of each other. It is modifying the plot, just not displaying the updated info correctly. If you resize the window the plot is redrawn correctly.

I've spend an inordinate amount of time digging through source code and documentation for wx, wxmpl, and matplotlib... The best solution I've come up with is resizing the window to force a repaint (thus displaying the updated plot correctly).

# All of these fail - displays the same, incorrect plot
# (view is a wxmpl.PlotPanel object, which inherits from wx.Window among other things)
view.Refresh()
view.Update()
view.draw()

# This works, but is clearly less than ideal
view.SetSize((view.GetSize().width, view.GetSize().height+1))
view.SetSize((view.GetSize().width, view.GetSize().height-1))

There's got to be a better way - what I really want to know is what wx.Window.SetSize does to redraw the window, and just call that instead. Or, is there another method that I missed somewhere?

Answer 1

The panel.Layout() command is a great option because it is exactly the same method that is called when you resize your window. I also had trouble with the refresh and update methods. Layout seems to work when those two fail.