Hey everybody,

I am trying to create a simple plot with a dotted line. However,
depending on the export format I use, I get random markers on the
line. This effect appears for pdf but not for png. When I use eps and
convert the eps file to pdf I also receive the random markers.

I use the following script to generate the plot. The resulting graph
on my system is attached to this mail.

#!/usr/bin/env python
import numpy as np
a = np.linspace(0.,10.,100)
b = np.sqrt(a)
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
fig.add_subplot(ax)
ax.plot(a, b, linestyle = ':', color = 'k', linewidth = 3)
fig.savefig('broken.pdf')

My system is:

Linux  3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux

I am using matplotlib version '1.1.0'.

Any help is greatly appreciated.
Benjamin

Attachment: broken.pdf
Description: Adobe PDF document

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