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

[Allan Engelhardt]

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.

Allan

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