subset data

Try, data[data$id%in%selected.id,]


Good day!
Kushantha

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of abdul kudus
Sent: Wednesday, May 06, 2009 10:12 AM
To: r-help at r-project.org
Subject: [R] subset data

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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