#! usr/bin/python
#coding=utf-8 
import numpy as np
import matplotlib.pyplot as plt 
fig, axl = plt.subplots(nrows=4,ncols=3)
ax=axl[0][0]#选择第一个子图
ax.scatter(1,1,c='black',s=0.1)
ax.set_ylabel('Window Size:')
plt.show()