将Pandas DataFrame绘制为同一图表上的Bar和Line

时间:2014-05-05 21:26:26

标签: python matplotlib charts pandas

我正在尝试绘制一个图表,其中第一列和第二列数据为条形,然后是第三列数据的行覆盖。

我已经尝试了以下代码,但这会创建2个单独的图表,但我想在一个图表上完成所有这些。

left_2013 = pd.DataFrame({'month': ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep', 'oct', 'nov', 'dec'],
                     '2013_val': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 9, 6]})

right_2014 = pd.DataFrame({'month': ['jan', 'feb'], '2014_val': [4, 5]})

right_2014_target = pd.DataFrame({'month': ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep', 'oct', 'nov', 'dec'],
                                   '2014_target_val': [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]})


df_13_14 = pd.merge(left_2013, right_2014, how='outer')
df_13_14_target = pd.merge(df_13_14, right_2014_target, how='outer')
df_13_14_target[['month','2013_val','2014_val','2014_target_val']].head(12)

plt.figure()
df_13_14_target[['month','2014_target_val']].plot(x='month',linestyle='-', marker='o')
df_13_14_target[['month','2013_val','2014_val']].plot(x='month', kind='bar')

这是我目前得到的

kpi dashboard

1 个答案:

答案 0 :(得分:22)

DataFrame绘图方法返回matplotlib AxesSubplotAxesSubplots列表。 (例如,请参阅the docs for plotboxplot。)

然后,您可以将相同的轴传递给下一个绘图方法(使用ax=ax)在相同的轴上绘制:

ax = df_13_14_target[['month','2014_target_val']].plot(x='month',linestyle='-', marker='o')
df_13_14_target[['month','2013_val','2014_val']].plot(x='month', kind='bar', 
   ax=ax)

import pandas as pd
import matplotlib.pyplot as plt

left_2013 = pd.DataFrame(
    {'month': ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep',
               'oct', 'nov', 'dec'],
     '2013_val': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 9, 6]})

right_2014 = pd.DataFrame({'month': ['jan', 'feb'], '2014_val': [4, 5]})

right_2014_target = pd.DataFrame(
    {'month': ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep',
               'oct', 'nov', 'dec'],
     '2014_target_val': [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]})

df_13_14 = pd.merge(left_2013, right_2014, how='outer')
df_13_14_target = pd.merge(df_13_14, right_2014_target, how='outer')

ax = df_13_14_target[['month', '2014_target_val']].plot(
    x='month', linestyle='-', marker='o')
df_13_14_target[['month', '2013_val', '2014_val']].plot(x='month', kind='bar',
                                                        ax=ax)

plt.show()

enter image description here