matplotlib pyplot subplots
import numpy as npimport matplotlib.pyplot as plt# 双变量的直方图# 颜色越深频率越高# 研究双变量的联合分布x = np.arange(2).reshape(-1,1)y = np.arange(2,4).reshape(-1,1)z = np.hstack([x, y]) # 横向连接两个矩阵ax1 = plt.imshow(z)plt.colorbar()plt.xlabel('activities')plt.ylabe
