[英]Add axis to colorbar in python matplotlib
这里的关键是cax
kwarg到colorbar
。 您需要创建插入轴,然后将该轴用于颜色条。
举个例子:
import numpy as np
import matplotlib.pyplot as plt
npoints = 1000
x, y = np.random.normal(10, 2, (2, npoints))
fig, ax = plt.subplots()
artist = ax.hexbin(x, y, gridsize=20, cmap='gray_r', edgecolor='white')
# Create the inset axes and use it for the colorbar.
cax = fig.add_axes([0.8, 0.15, 0.05, 0.3])
cbar = fig.colorbar(artist, cax=cax)
plt.show()
如果你想得到更精确和更精确匹配的东西(注意:我在这里使用hexbin,它不支持日志轴,所以我要离开那部分。)
import numpy as np
import matplotlib.pyplot as plt
npoints = 1000
x, y = np.random.normal(10, 2, (2, npoints))
fig, ax = plt.subplots()
artist = ax.hexbin(x, y, gridsize=20, cmap='gray_r', edgecolor='white')
cax = fig.add_axes([0.8, 0.15, 0.05, 0.3])
cbar = fig.colorbar(artist, cax=cax)
ax.spines['right'].set(visible=False)
ax.spines['top'].set(visible=False)
ax.tick_params(top=False, right=False)
cbar.set_ticks([5, 10, 15])
cbar.ax.set_title('Bin Counts', ha='left', x=0)
cbar.ax.tick_params(axis='y', color='white', left=True, right=True,
length=5, width=1.5)
cbar.outline.remove()
plt.show()
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