matplotlib：plt.scatter

import numpy as np
import matplotlib
matplotlib.use(“TkAgg”)
import matplotlib.pyplot as plt

n=1024
X=np.random.normal(0,1,n)
Y=np.random.normal(0,1,n)

T=np.arctan2(Y,X) # for color value
plt.scatter(X,Y,s=100,c=T,alpha=0.6) #alpha为透明度
plt.xticks(())#隐藏X轴的ticks
plt.yticks(())#隐藏Y轴的ticks

plt.show()