[R] to check if a character string is in a group of character strings

[Jose Iparraguirre]

Not sure what you want this for, but work along the following:

> pool = c("s1","s2")
> subpool = c("s1")

> ifelse(pool==subpool,1,0)
[1] 1 0

Notice:
> pool2 = c("s2","s1")
> ifelse(pool2==subpool,1,0)
[1] 0 1

Etc.

Hope this helps.

José


José Iparraguirre
Chief Economist
Age UK



-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Yuan, Rebecca
Sent: 23 January 2013 16:15
To: R help
Subject: [R] to check if a character string is in a group of character strings

Hello,

How can I judge if a string is in a group of string? For example, I would like to have

if (subpool in pool){
}else{
}

Where

> pool = c("s1","s2")
> subpool = c("s1")

How can I write the "subpool in pool" right in R?

Thanks very much!

Cheers,

Rebecca


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