Re: [R] Basic question - more efficient method than loop?

From: Allan Engelhardt <>
Date: Mon, 28 Jun 2010 17:18:25 +0100

On 28/06/10 16:46, GL wrote:
> I'm guessing there's a more efficient way to do the following using the index
> features of R. Appreciate any thoughts....
> for (i in 1:nrow(dbs1)){
> if(dbs1$Payor[i] %in% Payor.Group.Medicaid) dbs1$Payor.Group[i] =
> "Medicaid"


Try something like

dbs1$Payor.Group[dbs1$Payor %in% Payor.Group.Medicaid]<- "Medicaid" etc.

to get started.

Hope this helps.


> [...]
> mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Mon 28 Jun 2010 - 16:21:21 GMT

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