篮球赛季的固定装置以表格形式显示在网页上。在读入R之前,我已复制并另存为.csv文件。清理很简单,直到找不到用 Round 数字替换NA的方法为止。见下文:
ROUND DATE TIME VENUE
<int> <date> <time> <chr>
1 1 2018-03-16 20:40 Casey Stadium Crt 2
2 NA 2018-03-16 20:40 Frankston Crt 2
3 NA 2018-03-16 20:40 State Basketball Centre Court 4
4 NA 2018-03-16 20:40 Waverley Crt 2
5 NA 2018-03-16 21:40 Sandringham Crt 4
6 2 2018-03-23 19:40 Sandringham Crt 2
7 NA 2018-03-23 20:40 Chelsea Crt 2
8 NA 2018-03-23 20:40 Knox Crt 3
9 NA 2018-03-23 20:40 Waverley Crt 2
10 NA 2018-03-23 21:30 Balwyn High Crt 1
11 3 2018-04-20 20:30 Balwyn High Crt 2
12 NA 2018-04-20 20:30 Brighton Crt 1
13 NA 2018-04-20 20:40 Chelsea Crt
14 NA 2018-04-20 20:40 Kilsyth Crt 5
15 NA 2018-04-20 20:40 Knox Crt 4
第1-5行应全部为ROUND = 1,第6-10行应全部为ROUND = 2等等。我想我必须在“ DATE”之前进行“ group_by”,但是那又如何呢?谢谢您的帮助