如何在Python中按周绘制多个折线图

Question

如果我在中有数据，如下例

因此，我尝试通过将多个线图按Weeknumber分开，并分别在x轴和y轴上用numberofday和QTyValue命名该轴来绘制多个线图。我该怎么办？

Answer 1

这个问题尚不清楚。我希望这回答了你的问题。如果我错过了任何事情，请告诉我。

import pandas as pd
import matplotlib.pyplot as plt

data = {'Date_M':['2008-02-10', '2008-02-11', '2008-02-12', '2008-02-13','2008-02-14','2008-02-15'],
        'QTyValue': [0.6, 0.7, 0.6, 0.9, 0.5,0.6],
        'weeknumber':[7,7,8,8,9,9],
        'numberofday':[0,1,2,3,4,5]}

df = pd.DataFrame(data, index=None) 
fig = plt.figure()
for i in df['weeknumber'].unique():
  tmp = df[df['weeknumber'] ==i]
  plt.plot(tmp['numberofday'],tmp['QTyValue'])
plt.xlabel('numberofday')
plt.ylabel('QTyValue')
plt.title('Plot for each weeknumber in dataframe')
plt.legend(df['weeknumber'].unique())
plt.show()

这将产生以下