2017-04-07 53 views
1

我想更改寄生轴的颜色。更改matplotlib中寄生虫轴的颜色

基地代码是例如从http://matplotlib.org/examples/axes_grid/demo_parasite_axes2.html

我刚添加

par1.spines['right'].set_color("red") 

至(根据https://stackoverflow.com/a/12059429/716469)改变颜色。但它不起作用。

完整的代码:

from mpl_toolkits.axes_grid1 import host_subplot 
import mpl_toolkits.axisartist as AA 
import matplotlib.pyplot as plt 

host = host_subplot(111, axes_class=AA.Axes) 
plt.subplots_adjust(right=0.75) 

par1 = host.twinx() 
par2 = host.twinx() 

offset = 60 
new_fixed_axis = par2.get_grid_helper().new_fixed_axis 
par2.axis["right"] = new_fixed_axis(loc="right", 
            axes=par2, 
            offset=(offset, 0)) 

par2.axis["right"].toggle(all=True) 

host.set_xlim(0, 2) 
host.set_ylim(0, 2) 

host.set_xlabel("Distance") 
host.set_ylabel("Density") 
par1.set_ylabel("Temperature") 
par2.set_ylabel("Velocity") 

p1, = host.plot([0, 1, 2], [0, 1, 2], label="Density") 
p2, = par1.plot([0, 1, 2], [0, 3, 2], label="Temperature") 
p3, = par2.plot([0, 1, 2], [50, 30, 15], label="Velocity") 

par1.set_ylim(0, 4) 
par2.set_ylim(1, 65) 

host.legend() 

host.axis["left"].label.set_color(p1.get_color()) 
par1.axis["right"].label.set_color(p2.get_color()) 
par2.axis["right"].label.set_color(p3.get_color()) 

# Why doesn't work? 
par1.spines['right'].set_color("red") 

plt.draw() 
plt.show() 

我使用matplotlib 2.0.0

回答

1

host_subplot创建的mpl_toolkits.axisartist.axis_artist.AxisArtist一个实例,它是不一样的作为一个正常的轴。

因此,您需要设置就像你与标签做轴的属性,

host.axis["right"].line.set_color(p2.get_color()) 
par1.axis["right"].major_ticks.set_color(p2.get_color()) 
par1.axis["right"].major_ticklabels.set_color(p2.get_color()) 

par2.axis["right"].line.set_color(p3.get_color()) 
par2.axis["right"].major_ticks.set_color(p3.get_color()) 
par2.axis["right"].major_ticklabels.set_color(p3.get_color()) 

enter image description here