您需要手动定位条,即将位置作为数组提供给
position
箱线图的参数。在这里,将一个移动-0.2,另一个移动+0.2到其整数位置是有意义的。然后可以调整它们的宽度,使其总和小于位置差。
import matplotlib.pyplot as plt
import pandas as pd
import numpy as np
fig, axarr = plt.subplots(3,sharex=True,sharey=True,figsize=(9,6))
month = ['jan','feb','mar','apr','may','jun','jul','aug','sep','oct','nov','dec']
percentiles = [90,95,98]
nr = 0
for p in percentiles:
future_data = pd.DataFrame(np.random.randint(0,30,size=(30,12)),columns = month)
present_data = pd.DataFrame(np.random.randint(0,30,size=(30,12)),columns = month)
Future = future_data.as_matrix()
Present = present_data.as_matrix()
pp = axarr[nr].boxplot(Present,patch_artist=True, showfliers=False,
positions=np.arange(Present.shape[1])-.2, widths=0.4)
fp = axarr[nr].boxplot(Future, patch_artist=True, showfliers=False,
positions=np.arange(Present.shape[1])+.2, widths=0.4)
nr += 1
axarr[-1].set_xticks(np.arange(len(month)))
axarr[-1].set_xticklabels(month)
axarr[-1].set_xlim(-0.5,len(month)-.5)
plt.show()