Python pyplot X轴标签旋转

Question

I am trying to rotate the xaxis labels but the xticks function below has no effect and the labels overwrite each other

import matplotlib.pyplot as plt
import seaborn as sns
     corrmat = X.corr()
     plt.xticks(rotation=90)       
     plt.figure(figsize=(15,16))          
     ax = sns.heatmap(corrmat, vmin=0, vmax=1)
     ax.xaxis.tick_top()

After using suggested code changes: I get the following but I still want to increase the size of the heatmap

Answer 1

setp looks to be the way to go with pyplot (inspiration from this answer ). This works for me:

import matplotlib.pyplot as plt
import seaborn as sns; sns.set()
import numpy as np; np.random.seed(0)

data = np.random.rand(10, 12)
ax = sns.heatmap(data)
ax.xaxis.tick_top()
locs, labels = plt.xticks()
plt.setp(labels, rotation=90)
plt.show()

Obviously I don't have your data, hence the numpy random data, but otherwise the effect is as required: