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Hello,
I am again working on an application with animated plots using the
blitting method. I am using the Qt4 backend, but I had similar trouble
with the wx backend. The trouble is when I first get the bbox of the
plot to copy the background region, the bbox is incorrect, so the
wrong region is used for updating. I have added a resize event handler
(below) that works well. As soon as I resize the application the
graphs look fine. I have tried calling all of the following before
accessing the bbox to try and force the application to get to an
appropriate layout:
 self.update()
 self.repaint()
 self.layout()
 QApplication.processEvents()
 QApplication.processEvents()
 QApplication.flush()
I also plot a set of data that has the same x and y range as the
animated data, so I know the axis limits are not changing. When I
print the initial bbox, I get 30,15,270,285 and when I print it after
resizing, I get 30.8, 22, 277,417 which makes much more sense.
Here is the resize event handler:
 self.update()
 self.total_bbox = self.SpecPlotA
 print self.total_bbox
 self.bkg = self.SpecCanvas.copy_from_bbox(self.total_bbox)
Any ideas of how to get the initial plot to work?
Thanks
Glenn

On 2008年4月13日, "James A. Bednar" apparently wrote:
> def matrixplot3d(mat,title=None):
> fig = pylab.figure()
> ax = axes3d.Axes3D(fig)
> # Construct matrices for r and c values
> rn,cn = mat.shape
> c = outer(ones(rn),arange(cn*1.0))
> r = outer(arange(rn*1.0),ones(cn))
> ax.plot_wireframe(r,c,mat)
> ax.set_xlabel('R')
> ax.set_ylabel('C')
> ax.set_zlabel('Value')
> if title: windowtitle(title)
> pylab.show()
Have you noticed any problems with tic-label
placement on the "y" axis?
Cheers,
Alan Isaac