相关疑难解决方法(0)

我想知道如何更改颜色栏中刻度线的颜色以及如何更改图中标题和颜色条的字体颜色.例如,事情显然在temp.png中可见但在temp2.​​png中不可见:

import matplotlib.pyplot as plt
import numpy as np
from numpy.random import randn

fig = plt.figure()
data = np.clip(randn(250,250),-1,1)
cax = plt.imshow(data, interpolation='nearest')
plt.title('my random fig')
plt.colorbar()

# works fine
plt.savefig('temp.png')
# title and colorbar ticks and text hidden
plt.savefig('temp2.png', facecolor="black", edgecolor="none")

谢谢