Hello all.

I had MatPlotLib 1.3.1 installed, and decided to upgrade to 1.4.3. I compiled 
the
.tar.gz package, which went without a hitch (except for a number of warnings
from gcc). Installation also completed without problems.

But, on running the same simple plot I was working on, no plot was output:

import matplotlib.pyplot as plt

def test_plot():
    x = range(11)
    y = [x0**2 for x0 in x]

    plt.plot(x, y, 'o:', fillstyle='none', label = "1", ms = 10)
    plt.legend()
    plt.show()

def main(args):
    test_plot()
    return 0

if __name__ == '__main__':
    import sys
    sys.exit(main(sys.argv))

which was somewhat annoying, as I was trying to help out someone on
Stackoverflow. Only after experimenting somewhat, I found that 
setting the Agg to GtkAgg, the plot started working again:

import matplotlib
matplotlib.use('GtkAgg')

Is this normal? I'm not actually using gtk in this project.
TkAgg also works. 

John

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