这样提取的结果只有两列,而我想提取的是9列。
原train1
age starttime day cost sex occupational effect symptoms symptomc
1 10.6 2017-12-4 11:46:00 3 1586.87 [0,1] [0,1] [0,1] 01 [0,3]
2 19 2017-9-29 10:11:00 3 1618.97 [0,1] [0,1] [0,1] 01 [0,3]
3 20 2017-11-13 17:10:00 3 1788.49 [0,1] [0,1] [0,1] 01 [0,3]
4 104 2017-12-14 10:55:00 4 1903.23 [0,1] (1,2] [0,1] 01 [0,3]
5 13 2017-9-29 10:12:00 4 1954.58 [0,1] [0,1] [0,1] 01 [0,3]
6 72 2017-9-30 15:39:00 4 1965.65 [0,1] (1,2] [0,1] 01 [0,3]
7 42 2017-10-13 8:41:00 4 1998.79 [0,1] [0,1] [0,1] 01 [0,3]
8 62 2017-10-20 9:38:00 4 2002.79 [0,1] [0,1] [0,1] 01 [0,3]
9 15 2017-11-12 10:41:00 4 2065.11 [0,1] [0,1] [0,1] 01 [0,3]
10 2.4 2017-11-18 15:51:00 4 2107.28 [0,1] [0,1] [0,1] 01 [0,3]
11 40 2017-9-26 11:23:00 5 2309.81 [0,1] [0,1] [0,1] 01 [0,3]
12 37 2017-10-8 17:52:00 5 2330.83 [0,1] [0,1] [0,1] 01 [0,3]
13 83 2017-10-17 9:26:00 5 2352.21 [0,1] (1,2] [0,1] 01 [0,3]
提取结果
train1[test,c(1,9)]
age symptomc
3 20 [0,3]
5 13 [0,3]
7 42 [0,3]
11 40 [0,3]
13 83 [0,3]
15 79 [0,3]
16 86 [0,3]
20 77 [0,3]
21 24 [0,3]
22 80 [0,3]
26 13 [0,3]
29 40 [0,3]
30 13 [0,3]
31 35 [0,3]
36 19 [0,3]
38 50 [0,3]
39 115 [0,3]
44 121 [0,3]