On Tuesday 13 April 2010 16:37:21 hettling wrote:
> Dear all,
>
> I want to plot 3 overlapping regions using fill() into one panel, but my
> solution looks sort of messy... Here is the code:
[...snip...]
> The figure looks like 4 regions are plotted, because overlapping red and
> yellow make an orange region... I tried some different combination, but
> it never looked good. Does anybody have an idea how to chose the colors
> and 'alpha' values for transparency so that the plot looks good and
> could be printed?
>
> Any help is appreciated,
> thanks in advance,
> Hannes
Hi Hannes,
maybe hatching of the regions help to distinguish the 3 different regions of 4
regions (see the code below).
Kind regards,
Matthias
=======
from matplotlib import pyplot as plt
import numpy as np
##Data to plot
seq = np.sin(range(0, 10))
xpts = np.concatenate((range(0, 10), range(0, 10)[::-1]))
plt.figure()
##Plot 3 overlapping regions, a different color for each one
for diff, color, hatch in zip([1, 2, 3], ["blue", "red", "yellow"],
['/', '|', '\\']):
ypts = np.concatenate((seq - diff, (seq - diff * 2)[::-1]))
plt.fill(xpts, ypts, alpha=0.7, fc=color, hatch=hatch, ec="black",
lw=2, label=str(diff))
plt.legend()
plt.show()
=======
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