Make sure yu're using a backend with a user interface.
http://matplotlib.sourceforge.net/faq/installing_faq.html#what-is-a-backend
El mié, 19-11-2008 a las 10:49 -0500, Ron Brennan escribió:
> Hello,
>
> I am completely new to Matplotlib. I can't seem to get my script (a
> copy and paste from a Histogram example) to generate a graph. When I
> run my script, the command prompt returns.
>
> Is there something I am missing?
>
> #
> # histogram.py
> #
> import numpy as np
> import matplotlib.mlab as mlab
> import matplotlib.pyplot as plt
>
> mu, sigma = 100, 15
> x = mu + sigma*np.random.randn(10000)
>
> # the histogram of the data
> n, bins, patches = plt.hist(x, 50, normed=1, facecolor='green',
> alpha=0.75)
>
> # add a 'best fit' line
> y = mlab.normpdf( bins, mu, sigma)
> l = plt.plot(bins, y, 'r--', linewidth=1)
>
> plt.xlabel('Smarts')
> plt.ylabel('Probability')
> plt.title(r'$\mathrm{Histogram\ of\ IQ:}\ \mu=100,\ \sigma=15$')
> plt.axis([40, 160, 0, 0.03])
> plt.grid(True)
>
> plt.show()
>
> Calling with:
> python histogram.py
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