[web2py] matplotlib output

[Richard]

Dear all,

On the Mac it ran but on windows I can't get started and do not get an
plot in an applications using:


In Controllers/default

def index():

    import os
    import numpy as np
    import matplotlib
    import matplotlib.pyplot as plt
    matplotlib.use('Agg')

    x = np.arange(0, 5, 0.1);
    y = np.sin(x)
    plt.plot(x, y)

    outputfile = os.path.join(request.folder,'static','mp1.png')
    plt.savefig(outputfile,format='png')


In views/default/index.html

<p> Outfile from Matplotlib
<img src="{{=URL('static','mp1')}}"  />
</p>


Resulting in "None"

I think somebody can help me.

Thank, Richard