python2.7-colorbar：如何设置色标刻度字体？

Question

import matplotlib.pyplot as plt
import numpy as np
from numpy import ma
from matplotlib import ticker, cm
N = 100
x = np.linspace(-3.0,3.0,N) # x value
y = np.linspace(-2.0,2.0,N) # y value
X, Y = np.meshgrid(x,y)
Z1 = np.exp(-(X)**2 - (Y)**2)
Z2 = np.exp(-(X*10)**2 - (Y*10)**2)
z = Z1 + 50 * Z2
z[:5, :5] = -1
z = ma.masked_where(z<=0,z)
fig, ax = plt.subplots()
cs = ax.contourf(X,Y,z,locator=ticker.LogLocator(),cmap=cm.PuBu_r)
cbar = fig.colorbar(cs) # add colorbar
plt.show()

结果显示如下：

image 1

问题：如何设置色标刻度字体？

Answer 1

只需添加cbar.ax.set_yticklabels行代码

import matplotlib.pyplot as plt
import numpy as np
from numpy import ma
from matplotlib import ticker, cm
N = 100
x = np.linspace(-3.0,3.0,N) # x value
y = np.linspace(-2.0,2.0,N) # y value
X, Y = np.meshgrid(x,y)
Z1 = np.exp(-(X)**2 - (Y)**2)
Z2 = np.exp(-(X*10)**2 - (Y*10)**2)
z = Z1 + 50 * Z2
z[:5, :5] = -1
z = ma.masked_where(z<=0,z)
fig, ax = plt.subplots()
cs = ax.contourf(X,Y,z,locator=ticker.LogLocator(),cmap=cm.PuBu_r)
cbar = fig.colorbar(cs) # add colorbar
cbar.ax.set_yticklabels(cbar.values, fontname="Arial Black") #this line has been added, i am setting font as Arial Black
plt.show()

请根据您的需要修改值