我已经将一年365天分配给了几个群集,我现在正试图将它们绘制在热图上。
我的代码工作正常,但cbar.set_ticks(some_range)没有效果:我的颜色条上的刻度标签有正确的文字,但位置错误
这是一个MCVE
from datetime import date
import numpy as np
import pandas as pd
import matplotlib.pylab as plt
import matplotlib
import seaborn as sns
#create some random data
n_cluster = 4
index = pd.date_range('01/01/2016', end='31/12/2016', freq='1D')
df = pd.DataFrame(np.random.randint(0, n_cluster, len(index)),
index=index, columns=['cluster'])
pivot = df.pivot_table('cluster',
columns=[lambda x: x.weekofyear],
index= [lambda x: x.dayofweek])
#yticklabels of the heatmap
days = [date(2018, 1, d).strftime('%a')[:3] for d in range(1, 8)]
#get a discrete cmap
cmap = plt.cm.get_cmap('RdBu', n_cluster)
fig = plt.figure(figsize=(10,3))
gs = matplotlib.gridspec.GridSpec(1, 2, width_ratios=[50,1])
ax = plt.subplot(gs[0])
cbar = plt.subplot(gs[1])
sns.heatmap(pivot, square=True, cmap=cmap,
yticklabels=days, ax=ax, cbar_ax=cbar)
#There is something wrong here
cbar.set_yticks([i + 1/(2.0*n_cluster) for i in np.arange(0, 1, 1.0/n_cluster)])
#This one is ok
cbar.set_yticklabels(range(0, n_cluster))
感谢您的帮助