python plt x轴比例与数据不同

Question

My data set looks like:

     Month  DeviceType  AvgRevenue
0   201608  desktop     3.029642
1   201608  mobile      0.197588
2   201608  tablet      1.575810
3   201609  desktop     2.352156
4   201609  mobile      0.182009

And I try to draw a plot to visualize it, however, the x-axis is different from the original data, since my x-axis should be Year and month, the x-axis that the plot shows is not reasonable...How can I correct this? Thanks!!

fig, ax = plt.subplots()
for name, group in device.groupby('DeviceType'):
    group.plot('Month', y='AvgRevenue', ax=ax, label=name)

Answer 1

我通过将设备 ['Month'] 转换为日期时间来解决这个问题： device['Month'] = pd.to_datetime(device['Month'], format='%Y%M')