Re: [R] Recoding

From: Jorge Ivan Velez <jorgeivanvelez_at_gmail.com>
Date: Fri, 27 Jun 2008 15:15:40 -0400

Dear Agustin,

Perhaps

v1 <- c(1,1,1,2,3,4,1,10,3)
dput(as.numeric(ifelse(v1%in%c(1,2,3),paste(100,v1,sep=""),v1)))

HTH, Jorge

On Fri, Jun 27, 2008 at 2:41 PM, Agustin Lobo <aloboaleu_at_gmail.com> wrote:

> Hi!
>
> Given a vector (or a factor within a df),i.e. v1 <- c(1,1,1,2,3,4,1,10,3)
> and a dictionary
> cbind(c(1,2,3),c(1001,1002,1003))
>
> is there a function (on the same line than recode() in car)
> to get v2 as c(1001,1001,1001,1002,1003,4,1001,10,1003) ?
>
> I'm using myself a function based on match() since
> long ago (I think that thanks to advice by Prof. B. Ripley),
> but would like to know if there is an standard function (i.e., like
> recode()). What I'm using is:
>
> "reclas" <- function(v, origen, imagen, directo = T, resto=1)
> {
> if(directo == F) {
> aux <- origen
> origen <- imagen
> imagen <- aux
> }
> m <- match(v, origen, 0)
> #print("match finished")
> if(resto==0) v <- v*0
> v[m > 0] <- imagen[m]
> v
> }
>
> Agus
>
> --
> Dr. Agustin Lobo
> Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
> LLuis Sole Sabaris s/n
> 08028 Barcelona
> Spain
> Tel. 34 934095410
> Fax. 34 934110012
> email: Agustin.Lobo_at_ija.csic.es
> http://www.ija.csic.es/gt/obster
>
> ______________________________________________
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> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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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 and provide commented, minimal, self-contained, reproducible code. Received on Fri 27 Jun 2008 - 19:20:35 GMT

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