[英]pandas plotting duration with different levels
我有一些這樣的數據
level ts
0 1.0 2014-11-27 16:00:28.211950-08:00
1 1.5 2014-12-04 17:54:56.185200-08:00
2 2.1 2014-12-04 17:59:54.303900-08:00
3 2.6 2014-12-04 18:04:54.307770-08:00
4 1.8 2014-12-04 18:09:55.917890-08:00
5 1.1 2014-12-04 18:14:54.977890-08:00
6 1.0 2014-12-04 18:19:56.729060-08:00
我想生成一個圖,其中Y軸是水平,X軸是一周中的時間(假設X軸的整個范圍是一周,然后將時間戳投影到特定位置)。 我想畫線(或框),例如,從2014-12-04 17:54:56.185200-08:00
到2014-12-04 17:59:54.303900-08:00
有2014-12-04 17:59:54.303900-08:00
, 1.5
水平,從2014-12-04 17:59:54.303900-08:00
到2014-12-04 18:04:54.307770-08:00
另一條水平線,以2.1
等,當然,這里時間戳需要轉換為一周內的值。
我怎樣才能做到這一點?
我仍然不確定您要實現的目標,我將做出一個大膽的猜測,即您想使用工作日+小時+分鍾的標簽來繪制x軸 ,這可以通過添加新列並設置多個索引,如下所示:
import pandas as pd
df
level ts
0 1.0 2014-11-28 00:00:28.211950
1 1.5 2014-12-05 01:54:56.185200
2 2.1 2014-12-05 01:59:54.303900
3 2.6 2014-12-05 02:04:54.307770
4 1.8 2014-12-05 02:09:55.917890
5 1.1 2014-12-05 02:14:54.977890
6 1.0 2014-12-05 02:19:56.729060
df['weekday'] = pd.DatetimeIndex(df['ts']).weekday
# you may use time if you just need timestamp
# df['time'] = pd.DatetimeIndex(df['ts']).time
df['hour'] = pd.DatetimeIndex(df['ts']).hour
df['minute'] = pd.DatetimeIndex(df['ts']).minute
# after that you construct a new dataframe with desired columns
df1 = df[['level', 'weekday', 'hour', 'minute']]
# then plot it by setting index to weekday and time (hour + minute)
df1.set_index(['weekday', 'hour', 'minute']).plot(kind='bar')
希望這可以幫助。
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