Change the last line to pylab.show() and it should work.
Anyway, this example should not crash the interpreter. I can reproduce
the crash on Python 2.4, 2.5, and 2.6 (32 and 64 bit) on Windows with
mpl 0.99.1 but not on Ubuntu 9.1 with mpl 0.99.0.
The shortest example that crashes is:
python -c "import pylab;pylab.subplot(111).figure.show()"
or on the interactive prompt:
>>> import pylab
>>> pylab.subplot(111).figure.show()
>>> exit()
Fatal Python error: PyEval_RestoreThread: NULL tstate
This application has requested the Runtime to terminate it in an unusual
way.
Please contact the application's support team for more information.
-- Christoph
On 2/9/2010 7:57 AM, Lee Boger wrote:
> >
> > 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
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