pandas画相关性矩阵

f = plt.figure(figsize=(19, 15))

plt.matshow(df.corr(), fignum=f.number)

plt.xticks(range(df.shape[1]), df.columns, fontsize=14, rotation=45)

plt.yticks(range(df.shape[1]), df.columns, fontsize=14)

cb = plt.colorbar()

cb.ax.tick_params(labelsize=14)

plt.title('Correlation Matrix', fontsize=16);