绘制直方图会给出高度误差msg

Question

我正在尝试根据百分比绘制直方图，但不断出现以下错误：

ValueError: incompatible sizes: argument 'height' must be length 6 or scalar

与这行有关，但是我不确定height参数有什么问题。

import numpy as np
import matplotlib.pyplot as plt
import pandas as pd

xaxis=['epic1', 'epic2', 'epic3', 'epic4', 'epic5', 'epic6']
n=len(xaxis)
names = ('epic1', 'epic2', 'epic3', 'epic4', 'epic5', 'epic6')
data = {'done': [57,53,49,65,78,56,89], 
        'progress': [23,12,34,11,34,12,12], 
        'todo' :[11,5,6,7,8,4,6]}

df = pd.DataFrame(data)
df['total'] = df['done'] + df['progress'] + df['todo']

df['done_per'] = df['done'] / df['total'] * 100
df['progress_per'] = df['progress'] / df['total'] * 100
df['todo_per'] = df['todo'] / df['total'] * 100

barWidth = 0.25
# Create green Bars
plt.bar(xaxis, done_per, color='#b5ffb9', edgecolor='green', width=barWidth)
# Create orange Bars
plt.bar(xaxis, progress_per, bottom=done_per, color='#f9bc86',
        edgecolor='orange', width=barWidth)
# Create blue Bars
plt.bar(xaxis, todo_per, bottom=[i+j for i,j in zip(done_per, progress_per)],
        color='blue', edgecolor='blue', width=barWidth)

plt.xticks(xaxis, names)
plt.xlabel("epics")
plt.show()

Answer 1

X_per（轴）中有7个项目，xaxis中有6个项目。

如果您要7个项目，将'epic7'添加到xaxis中即可完成工作。 xaxis.append('epic7')

我认为您在代码中错过了几行：

done_per = df['done_per']
progress_per = df['progress_per']
todo_per = df['todo_per']