CODEWITHSUNDEEP
pythonpython-2.7colormap
Chooseanameplease
Chooseanameplease

Reputation: 23

How do I change the default colormap for pyplot?

I would like to change the default colormap for pyplots from 'viridis' to 'Dark2'.

I tried:

changing the 'image.cmap' line in the matplotlibrc file

mpl.rcParams['image.cmap'] = 'Dark2'

mpl.pyplot.set_cmap('Dark2')

pyplot.set_cmap('Dark2')

Somehow none of these attempts worked. I also tried restarting the kernel afterwards and also restartet spyder itself but nothing changed. Now Im out of ideas.

import matplotlib as mpl
from matplotlib import pyplot

mpl.rcParams['image.cmap'] = 'Dark2'
mpl.pyplot.set_cmap('Dark2')
pyplot.set_cmap('Dark2')

I am always ending up with the default colors of the viridis colormap which starts with a blueish color and 2nd on orange one. I would like to see the green color from Dark2 first and than the orange one.

Appreciate your help !

cheers, Gerrit

Upvotes: 1

Views: 6503

Answers (2)

getup8
getup8

Reputation: 8228

I don't think plt.set_cmap works for your use case. Here are two options that should.

Use Seaborn's helper:

import seaborn as sns

sns.set_palette('Dark2')

Use Maplotlib rcParams:

from cycler import cycler
from matplotlib import pyplot as plt

plt.rcParams['axes.prop_cycle'] = cycler('color', plt.get_cmap('Dark2').colors)

Upvotes: 2

luis.parravicini
luis.parravicini

Reputation: 1227

You can use matplotlib.pyplot.set_cmap is the way to change the default colormap. If you run the code below, you should see the 'Dark2' colormap.

import matplotlib.pyplot as plt
import numpy as np


plt.set_cmap('Dark2')

plt.imshow(np.random.random((20, 20)))
plt.colorbar()
plt.show()

Upvotes: 0

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