[R] How to call subset in a for loop?

[David Reiner]

you were caught by the '=' versus '==' error ;-)
and Henrique's elegant one-liner avoids the problem altogether.

-- David

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Henrique Dallazuanna
Sent: Wednesday, January 26, 2011 6:00 AM
To: Aditya Bhagwat
Cc: r-help at r-project.org
Subject: Re: [R] How to call subset in a for loop?

Try this:

split(myDF, myDF$myField)

On Wed, Jan 26, 2011 at 8:18 AM, Aditya Bhagwat <bhagwataditya at gmail.com>wrote:

> Dear all,
>
> I have a data frame 'myDf', in which one of the fields 'myField' can have
> several possible values. To extract the observations for which it has value
> "A", I can do:
>
> subset(myDf, myField="A")
>
> However, when I try to do this within a loop, it doesn't work, it returns
> everything, and not a subset
>
> for (currField in c("A", "B", "C")){
>   subset(myDf, myField=currField)
> }
>
> How should I modify the call of subset in the loop to make it work?
>
> Thanks for your help!
>
> Adi
>
> --
> Aditya Bhagwat
>
>        [[alternative HTML version deleted]]
>
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>



--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

        [[alternative HTML version deleted]]



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