[英]Putting 2 scale for x-axis in the same plot
I've seen examples of how to add 2 scales for y-axis in a single plot, with the command twinx()
. 我已经看过如何使用命令
twinx()
在单个图中为y轴添加2个比例的示例。 However, I still couldn't figure out how to add 2 scales for the x-axis. 但是,我仍然无法弄清楚如何为x轴添加2个刻度。 In my case, I import the [x,y] data from MATLAB and plot them.
在我的例子中,我从MATLAB导入[x,y]数据并绘制它们。 I would like to have my original data of x(we can call it
x1
) displayed at the bottom of the figure, and the normalized x-data(we can call it x2
) on the top of the figure. 我想在图的底部显示x的原始数据(我们可以称之为
x1
),并在图的顶部显示标准化的x数据(我们可以称之为x2
)。 My code is: 我的代码是:
from scipy.io import loadmat
import matplotlib.pyplot as plt
import numpy as np
# loading data
fid_1 = 'beta_sweep_020.mat'
m1 = loadmat(fid_1)
x = m1['vt_dX']
x1 = np.reshape(x, x.size)
x2 = x1 / (-466.0)
y = m1['vt_beta']
y1 = np.reshape(y, y.size)
# plot
fig = plt.figure()
ax = fig.add_subplot(111)
plt.plot(abs(x1),y1,'r')
plt.show()
Can anyone help me with this? 谁能帮我这个? Thanks.
谢谢。
Use ax.twiny()
: 使用
ax.twiny()
:
import matplotlib.pyplot as plt
import numpy as np
x1 = np.linspace(0,1000000,100)
x2 = x1 / (-466.0)
y1 = np.log(x1)
fig = plt.figure()
ax1 = fig.add_subplot(111)
ax2 = ax1.twiny()
line1, = ax1.plot(x1,y1,'r')
line2, = ax2.plot(x2,y1,'b')
plt.legend((line1, line2), ('red', 'blue'))
plt.show()
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.