如何增加matplotlib條形圖中錯誤行的粗細？

條形圖如下圖所示，但我無法找到一種方法來增加錯誤行的粗細。該elinewidth選項不可用在ax.bar

> rects1 = ax.bar(..., elinewidth=3) 

AttributeError: Unknown property elinewidth

以下鏈接需要使用ax.errorbar()

但是有沒有可以直接提供給ax.bar()的選項？

來源

2017-03-06 Ébe Isaac

可以使用error_kw參數如下：

error_kw=dict(lw=5, capsize=5, capthick=3)

在例子中，這將是：

import numpy as np 
import matplotlib.pyplot as plt 

N = 5 
men_means = (20, 35, 30, 35, 27) 
men_std = (2, 3, 4, 1, 2) 

ind = np.arange(N) # the x locations for the groups 
width = 0.35  # the width of the bars 

fig, ax = plt.subplots() 
rects1 = ax.bar(ind, men_means, width, color='r', yerr=men_std, error_kw=dict(lw=5, capsize=5, capthick=3)) 

women_means = (25, 32, 34, 20, 25) 
women_std = (3, 5, 2, 3, 3) 
rects2 = ax.bar(ind + width, women_means, width, color='y', yerr=women_std, error_kw=dict(lw=5, capsize=5, capthick=3)) 

# add some text for labels, title and axes ticks 
ax.set_ylabel('Scores') 
ax.set_title('Scores by group and gender') 
ax.set_xticks(ind + width/2) 
ax.set_xticklabels(('G1', 'G2', 'G3', 'G4', 'G5')) 

ax.legend((rects1[0], rects2[0]), ('Men', 'Women')) 


def autolabel(rects): 
    """ 
    Attach a text label above each bar displaying its height 
    """ 
    for rect in rects: 
     height = rect.get_height() 
     ax.text(rect.get_x() + rect.get_width()/2., 1.05*height, 
       '%d' % int(height), 
       ha='center', va='bottom') 

autolabel(rects1) 
autolabel(rects2) 

plt.show()

給你：

來源

2017-03-06 07:07:17

如何增加matplotlib條形圖中錯誤行的粗細？

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