python - matplotlib:更改标题和颜色栏文本以及刻度颜色

Question

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形中标题和颜色栏的字体颜色。例如，东西显然在 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

Answer 1

以前的答案没有给出我想要的。我就是这样做的:

import matplotlib.pyplot as plt
import numpy as np
from numpy.random import randn
data = np.clip(randn(250,250),-1,1)
data = np.ma.masked_where(data > 0.5, data)


fig, ax1 = plt.subplots(1,1)

im = ax1.imshow(data, interpolation='nearest')
cb = plt.colorbar(im)

fg_color = 'white'
bg_color = 'black'

# IMSHOW    
# set title plus title color
ax1.set_title('ax1 title', color=fg_color)

# set figure facecolor
ax1.patch.set_facecolor(bg_color)

# set tick and ticklabel color
im.axes.tick_params(color=fg_color, labelcolor=fg_color)

# set imshow outline
for spine in im.axes.spines.values():
    spine.set_edgecolor(fg_color)    

# COLORBAR
# set colorbar label plus label color
cb.set_label('colorbar label', color=fg_color)

# set colorbar tick color
cb.ax.yaxis.set_tick_params(color=fg_color)

# set colorbar edgecolor 
cb.outline.set_edgecolor(fg_color)

# set colorbar ticklabels
plt.setp(plt.getp(cb.ax.axes, 'yticklabels'), color=fg_color)

fig.patch.set_facecolor(bg_color)    
plt.tight_layout()
plt.show()
#plt.savefig('save/to/pic.png', dpi=200, facecolor=bg_color)