[R] If else

[Ista Zahn]

Using numeric for missing sounds like asking for trouble. But if you
must, something like

mydata$confusingWillCauseProblemsLater <-
  ifelse(
    is.na(mydata$sex),
    0,
    as.numeric(factor(mydata$sex,
                      levels = c("M", "F"))))

should do it.

Best,
Ista

On Fri, Oct 30, 2015 at 9:15 PM, Val <valkremk at gmail.com> wrote:
> Hi all,
> Iam trying to change character  to numeric but have probelm
>
> mydata <- read.table(header=TRUE, text=', sep=" "
>      id  sex
>       1  NA
>       2  NA
>       3  M
>       4  F
>       5  M
>       6  F
>       7  F
>        ')
>
> if sex is missing then sex=0;
> if sex is"M" then sex=1;
> if sex is"F" then sex=2;
>
> Any help please ?
>
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>
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