Dear all,

> data <- data.frame(id=seq(1:10),x=runif(10))
> data
   id         x
1   1 0.3604464
2   2 0.4813987
3   3 0.0160058
4   4 0.7165909
5   5 0.6092248
6   6 0.2413049
7   7 0.7981568
8   8 0.6093960
9   9 0.2887064
10 10 0.3485780
> selected.id <- sample(data$id,3,replace=F)
> selected.id
[1] 9 7 1

I want to select data with corresponding selected.id, namely

> selected.data
   id         x
9   9 0.2887064
7   7 0.7981568
1   1 0.3604464

How to do?

Tq.

Abdul Kudus
Institute for Mathematical Research
Universiti Putra Malaysia

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