plot resolution discrepancy with embedding in gtk

Please note that my original posting was to

    > matplotlib-users-admin by mistake, so not everyone saw
    > the first part of this (below).

    > Based on John's suggestions, I checked figsize and dpi
    > settings and still find a difference in the plot quality
    > between using pylab.figure and using
    > matplotlib.figure.Figure.

    > As a simple test, I modified the example
    > to plot in a gtk window and use
    > Figure as follows:

from matplotlib.backends.backend_gtkagg import FigureCanvasGTK as FigureCanvas

from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvas