python-3.x - Pandas:如何使用开始和结束时间戳分析数据？

Question

我必须分析在给定时间段内使用应用程序的用户的事件，时间段是开始和结束时间戳。我尝试使用条形图，但我不知道如何在间隔中包含小时数。例如:uid=2 的用户使用位于 [18, 19, 20, 21] 的应用程序

我的数据框是这样的:

uid           sex          start                 end
1             0       2000-01-28 16:47:00   2000-01-28 17:47:00
2             1       2000-01-28 18:07:00   2000-01-28 21:47:00
3             1       2000-01-28 18:47:00   2000-01-28 20:17:00
4             0       2000-01-28 08:00:00   2000-01-28 10:00:00
5             1       2000-01-28 02:05:00   2000-01-28 02:30:00
6             0       2000-01-28 15:10:00   2000-01-28 18:04:00
7             0       2000-01-28 01:50:00   2000-01-28 03:00:00


df['hour_s'] = pd.to_datetime(df['start']).apply(lambda x: x.hour)
df['hour_e'] = pd.to_datetime(df['end']).apply(lambda x: x.hour)

uid           sex          start                 end              hour_s      hour_e
1             0       2000-01-28 16:47:00   2000-01-28 17:47:00   16          17
2             1       2000-01-28 18:07:00   2000-01-28 21:47:00   18          21
3             1       2000-01-28 18:47:00   2000-01-28 20:17:00   18          20
4             0       2000-01-28 08:00:00   2000-01-28 10:00:00   08          10
5             1       2000-01-28 02:05:00   2000-01-28 02:30:00   02          02
6             0       2000-01-28 15:10:00   2000-01-28 18:04:00   15          18
7             0       2000-01-28 01:50:00   2000-01-28 03:00:00   01          03

我必须找到特定时间内的用户数量

Answer 1

我不确定您是否在寻找甘特图。如果是这样，@Vinícius Aguiar 的提示在评论中。

从你的最后一行

I have to find number of users in a specifc hours

您似乎需要一个直方图来显示按一天中的小时旋转的用户数量(频率)。如果是这种情况，您可以执行以下操作:

#! /usr/bin/python3

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

# Read the data
df=pd.read_csv("data.csv")

# Get all hours per user (per observation)
def sum_hours(obs):
    return(list(range(obs['hour_s'],obs['hour_e']+1,1)))

# Get all existing activity hours (No matter which user)
Hours2D=list(df.apply(sum_hours,axis=1))
# Get all existing hours
HoursFlat=[hour for sublist in Hours2D for hour in sublist]

plt.hist(HoursFlat,rwidth=0.5,range=(0,24))
plt.xticks(np.arange(0,24, 1.0))
plt.xlabel('Hour of day')
plt.ylabel('Users')
plt.show()

其中 data.csv 是您提供的示例:

uid, sex,start,end,hour_s,hour_e
1,0,2000-01-28 16:47:00,2000-01-28 17:47:00,16,17
2,1,2000-01-28 18:07:00,2000-01-28 21:47:00,18,21
3,1,2000-01-28 18:47:00,2000-01-28 20:17:00,18,20
4,0,2000-01-28 08:00:00,2000-01-28 10:00:00,08,10
5,1,2000-01-28 02:05:00,2000-01-28 02:30:00,02,02
6,0,2000-01-28 15:10:00,2000-01-28 18:04:00,15,18
7,0,2000-01-28 01:50:00,2000-01-28 03:00:00,01,03

你应该得到下图: