Hello,
Try:
> a1$h2 <- 0
> a1$h2[a1$h1=="H"] <- 1
Regards
Le 12/07/03 16:18, jin...@ga.gov.au a écrit :
Hi all,
I would like create a new column in a data.frame (a1) to store 0, 1 data
converted from a factor as below.
a1$h2<-NULL
for (i in 1:dim(a1)[1]) {
if (a1$h1[i]=="H") a1$h2[i]<-1 else a1$h2[i]<-0
}
My question: is it possible to remove the loop from above code to achieve the
desired result?
Thanks in advance,
Jin
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