CODEWITHSUNDEEP
pythonmatplotlibplot
Gabriel
Gabriel

Reputation: 42329

Weird matplotlib color issue when plotting line

I might be missing something very obvious here, but I've tried numerous combinations I haven't been able to find the reason for this behavior.

I'm running Python v2.7.6 and matplotlib v1.4.3.

I have a simple plot:

import matplotlib.pyplot as plt
import numpy as np
x, y = np.random.random(50), np.random.random(50)
plt.plot(x, y, c='red', ls='-', lw=1., label='a', zorder=2)
plt.show()

Notice that the color is supposed to be red as per c='red'. What I get instead is:

enter image description here

If I use the full name of the argument color='red', the line is red as it should. If I remove any of the arguments after c='red', e.g.:

plt.plot(x, y, c='red', ls='-', lw=1., label='a')
plt.plot(x, y, c='red', ls='-', lw=1., zorder=2)
plt.plot(x, y, c='red', ls='-', label='a', zorder=2)
plt.plot(x, y, c='red', lw=1., label='a', zorder=2)

the plotted line is also red.

Am I doing something very obviously wrong here or did I stumble into a weird issue?

Add:

Using:

plt.plot(x, y, c='r', ls='-', lw=1., label='a', zorder=2)

as proposed (i.e.: c='r' instead of c='red') has no effect on my system, I still get the blue line.

Upvotes: 1

Views: 1604

Answers (2)

Gabriel
Gabriel

Reputation: 42329

This is a known issue and the fix will be released with v1.5.0.

See issue at Github for more details: https://github.com/matplotlib/matplotlib/issues/5197

Upvotes: 0

Leb
Leb

Reputation: 15953

The following information work with Python 3.x and matplotlib 1.4.3

c='r' found in docs

import matplotlib.pyplot as plt
import numpy as np
x, y = np.random.random(50), np.random.random(50)
plt.plot(x, y, c='r', ls='-', lw=1., label='a', zorder=2)
plt.show()

enter image description here

As it seems color='red' and color='r' seem to work along with c='r'. c='red' does not change the line color.

Upvotes: 1

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