[R] subset data
Kushantha Perera
kushanthap at ambaresearch.com
Wed May 6 07:15:22 CEST 2009
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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