I converted your example to a standalone one (attached), and it does
work for me. It's hard to say what may be going wrong for you without
knowing what a_steady and L_range are and what the limits of the axes
are getting set to etc. Can you provide a fully self-contained script
that exhibits this behavior? Also, what version of matplotlib and
platform are you using?
Cheers,
Mike
Zoho Vignochi wrote:
On Thu, 01 May 2008 22:00:33 +0000, Zoho Vignochi wrote:
Hello:
I have a script in which I have been using plot to plot numerous lines
on the same graph. I recently wanted to see how Line Collections work so
I tried porting it over. Everything successful except I can't seem to
get each line to be a different color. Here is the relevant section:
# Make a list of colors cycling through the rgbcmyk series.
colors = [colorConverter.to_rgba(c) for c in
('r','g','b','c','y','m','k')]
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
lines = collections.LineCollection([zip(L_range, item) for item
in a_steady])
lines.set_array(L_range)
lines.set_color(colors)
ax.add_collection(lines, autolim=True)
However every line is blue. Any ideas?
I should mention my import lines:
import numpy as np
from numpy import sum, zeros, less, where
import scipy as sp
import matplotlib.pyplot as plt
from matplotlib import collections
from matplotlib.colors import colorConverter
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import numpy as np
from numpy import sum, zeros, less, where
import scipy as sp
import matplotlib.pyplot as plt
from matplotlib import collections
from matplotlib.colors import colorConverter
colors = [colorConverter.to_rgba(c) for c in
('r','g','b','c','y','m','k')]
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
lines = collections.LineCollection([[[x,0], [x+1, 1], [x+2, 2]] for x in
range(20)])
# lines.set_array(L_range)
lines.set_color(colors)
ax.add_collection(lines, autolim=True)
ax.set_xlim(0, 21)
ax.set_ylim(0, 2)
plt.show()
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