在matplotlib中按名称绘制具有不同颜色的点

Question

how can different points be plotted in different colors in matplotlib when the colors are named and not referred to by number? eg

import matplotlib.pylab as plt
# this fails
plt.plot([1,2,3],[4,5,6],c=["r", "k", "b"]) 

c only takes numeric values. is there a way to pass it names of colors instead?

Answer 1

我认为您需要plt.scatter ，在这种情况下，代码可以正常工作：

plt.scatter([1,2,3],[4,5,6],c=["r", "k", "b"]) 

Answer 2

Try this:

import matplotlib.pylab as plt
xx = [1, 2, 3]
yy = [4, 5, 6]
colors = ['r', 'k', 'b']
for ii in range(len(xx)):
    plt.plot(xx[ii], yy[ii], 'o', color=colors[ii])