How can I generate more colors on pie chart matplotlib

Question

I am having more then 40 items to show in my chart. I have only 10 colours that repeatedly are shown on the chart. How can I generate more colors.

plt.pie(f,la         


        

Answer 1

You need colors argument, beside that you can use some color maps from cm.

import matplotlib.pyplot as plt
from matplotlib import cm
import numpy as np
a=np.random.random(40)
cs=cm.Set1(np.arange(40)/40.)
f=plt.figure()
ax=f.add_subplot(111, aspect='equal')
p=plt.pie(a, colors=cs)
plt.show()

Beside using colormaps, also consider using .set_color_cycle() method. See this post: plotting different colors in matplotlib