如何使用特定行指示对R中的数据帧进行子集化? [重复]

时间:2021-12-13 09:11:53

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I have a large data frame which I would like to break down into smaller data frames. I know which rows I would like to split up (i.e I want to separate rows 1 - 33, 34 - 60, ....). I know I have to use subset(), but I cant seem to find the specific parameters.

我有一个大型数据框,我想分解成更小的数据帧。我知道我想分开哪些行(即我想分开行1 - 33,34 - 60,......)。我知道我必须使用subset(),但我似乎无法找到具体的参数。

1 个解决方案

#1


1  

If you mean from the 1st to the 33th row, just do this

如果你的意思是从第1行到第33行,就这样做吧

df[1:33,]

as an example:

举个例子:

> df<-data.frame(A=LETTERS[1:10], B=c(1:10))
> df
   A  B
1  A  1
2  B  2
3  C  3
4  D  4
5  E  5
6  F  6
7  G  7
8  H  8
9  I  9
10 J 10

> df[1:3,]
  A B
1 A 1
2 B 2
3 C 3

#1


1  

If you mean from the 1st to the 33th row, just do this

如果你的意思是从第1行到第33行,就这样做吧

df[1:33,]

as an example:

举个例子:

> df<-data.frame(A=LETTERS[1:10], B=c(1:10))
> df
   A  B
1  A  1
2  B  2
3  C  3
4  D  4
5  E  5
6  F  6
7  G  7
8  H  8
9  I  9
10 J 10

> df[1:3,]
  A B
1 A 1
2 B 2
3 C 3