Windows XP Professional with Python 2.5 installed (pywin32 build 210) - 
came with dSPACE software package

Downloaded and installed matplotlib-0.99.1.win32-py2.5.exe from 
sourceforge.net

Downloaded and installed numpy-1.4.0-win32-superpack-python2.5.exe from 
sourceforge.net

Executing the following simple "log plot" script within PythonWin:

from matplotlib import pylab

# Create some artificial data.
test_frequency = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 
17, 18, 19, 20]
test_results = [-0.2, -0.7, -1.0, -1.5, -2.0, -2.5, -3.0, -3.5, -4, -5, 
-6, -7.1, -8, -9, -10, -11, -12, -15, -20, -25]
spec_frequency = [6, 8]
spec_results = [-3.0, -3.0]

# Plot
figure = pylab.subplot(111)
figure.semilogx()
figure.scatter(test_frequency, test_results, s=20, c='b', marker='s', 
edgecolors='none')
figure.scatter(spec_frequency, spec_results, s=40, c='g', marker='s', 
edgecolors='none')
figure.grid(True)
figure.set_xlabel(r"Frequency (Hz)", fontsize = 12)
figure.set_ylabel(r"Actuator Response (db)", fontsize = 12)

figure.figure.savefig('log_plot')
figure.figure.show()


Plots a figure on the screen that looks correct, then the following error 
(when I click OK, PythonWin closes)



Any advice would be appreciated. Maybe it's an installation or setup 
issue, but I'm pretty knew to Python programming and don't know how to 
debug this.

Lee Boger

<<image/gif>>

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