Re: [R] creating a subset of a dataset using ifelse statement?

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Wed 14 Dec 2005 - 07:57:47 EST

t c wrote:

> I am using R in a Microsoft Windows environment.
>
> I have a dataset called mp1b. I have a variable called h.
>
> h can take a value from -1 to 5.
>
> If h <1, I want to create a new dataset called mp2 that is the same as mp1b:
>
> mp2<-mp1b
>
> If h > 0, I want to set create a dataset mp2, where I limit the original dataset to those where mp1b$group = =h. similar to:
>
> mp2<-subset (mp1b, group= = h)
>
> I have tried this ifelse statement, but it does not seem to work as expected.
>
> mp2<-ifelse(h<1,mp1b,subset(mp1b,cluster_q==h))

mp2 <- if(h<1) mp1b else subset(mp1b,cluster_q==h)

Uwe Ligges

> Assistance is appreciated.
>
>
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Dec 14 09:34:27 2005

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