python中pi
PI (π) is very often used greek mathematical letters and has a higher repetition in circular geometry and probability. In this article, we are going to add π using a command in matplotlib.
PI(π)是非常常用的希腊数学字母，并且在圆形几何形状和概率上具有较高的重复率。 在本文中，我们将使用matplotlib中的命令添加π 。
plt.text(3, 0.4, r'$\pi=100$')
#Adding π as text
plt.title('Errorbar with 'r'$\pi=100$')
#Adding π in title of the figure
plt.xlabel('Time ('r'$\pi=100)$')
#Adding π in title of the figure
plt.ylabel('Variation ('r'$\pi=100)$')
#Adding π in title of the figure
在情节标签中添加omega的Python代码 (Python code for adding omega in plot label)
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(-3, 3)
y = np.tanh(x) + 0.1 * np.cos(5 * x)
# In text
plt.figure()
plt.plot(x, y, 'o', color='purple')
plt.title('Errorbar')
plt.text(2, 0.8, r'$\pi=100$', fontsize=14.0)
plt.grid()
plt.show()
# In title
plt.figure()
plt.plot(x, y, 'o', color='purple')
plt.title('Errorbar with 'r'$\pi=100$')
plt.grid()
plt.show()
# In x-axis label
plt.figure()
plt.plot(x, y, 'o', color='purple')
plt.xlabel('Time ('r'$\pi=100)$')
plt.grid()
plt.show()
# In y-axis label
plt.figure()
plt.plot(x, y, 'o', color='purple')
plt.ylabel('Variation ('r'$\pi=100)$')
plt.grid()
plt.show()
Output:
输出：
Output is as figure
翻译自: https://www.includehelp.com/python/adding-pi-in-plot-label.aspx
python中pi