I'm wondering whether someone can reproduce the following problem I'm
seeing in Ubuntu Intrepid.
I often use matplotlib to save images created with imshow to take
advantage of matplotlib's colour maps. I've noticed that the behaviour
is different for 0.98.3 between Windows XP-32 and Ubuntu Intrepid. I
don't remember seeing this problem with earlier versions. This minimal
example demonstrates the problem:
--
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
px = 3
rcFig = {'figsize': (1, 1),
'dpi': px,
'subplot.bottom': 0,
'subplot.left': 0,
'subplot.right': 1,
'subplot.top': 1,
}
plt.rc('figure', **rcFig)
a = np.ones((px, px))
plt.axis('off')
plt.imshow(a, cmap=cm.gray)
plt.savefig('mpl_out.png', dpi=px)
--
In Windows I get the correct behaviour - in this case a 3x3 image with
all black pixels:
bbb
bbb
bbb
However, in Linux the leftmost column of pixels is white
wbb
wbb
wbb
By the way, I think an imsave function that just saved an array as an
image with a specified colourmap and clims would be a nice addition to
matplotlib.image. Is there another way to achieve the same 1-to-1 array
element-to-pixel image saving applying colourmaps and clims?
thanks,
Gary R.
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