此时我对列表，因素和数据框架的理解是耍弄的。我想准备没有第一行的数据框〜“====”
head(dats)
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12
1 ==== ======= === === === === === ==== ======= ======= ======= ============
2 WMAU 08/0000 26 24 89 0 0 10.0 FEW010 SCT140 BKN270
3 WMAU 07/2300
4 WMAU 07/2200
5 WMAU 07/2100
6 WMAU 07/2000
结果欲望;
head(dats)
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12
1 WMAU 08/0000 26 24 89 0 0 10.0 FEW010 SCT140 BKN270
2 WMAU 07/2300
3 WMAU 07/2200
4 WMAU 07/2100
5 WMAU 07/2000
我尝试了dats [， - 1]＆amp; dats [-1]，但它删除了整个dats $ v1。
V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12
1 ======= === === === === === ==== ======= ======= ======= ============
2 08/0000 26 24 89 0 0 10.0 FEW010 SCT140 BKN270
3 07/2300
4 07/2200
5 07/2100
6 07/2000
获取信息，
class(dats)
[1] "data.frame"
mode(dats)
[1] "list"
typeof(dats)
[1] "list"
str(dats)
'data.frame': 26 obs. of 12 variables:
$ V1 : Factor w/ 2 levels "====","WMAU": 1 2 2 2 2 2 2 2 2 2 ...
$ V2 : Factor w/ 26 levels "=======","07/0000",..: 1 26 25 24 23 22 21 20 19 18 ...
请帮助。谢谢。