?read.table

na.strings='.'

Then change all NAs to zero     df$col[is.na(df$col)] <- 0

On Tue, Jan 12, 2010 at 12:46 PM, karena <dr.jzhou@gmail.com> wrote:

>
> hi, I have a question about importing data in R.
>
> I want to import a file which has missing value in it, and the missing
> values are denoted as ".", I want to first read in the file, and then
> change
> the "." into the number zero "0".
>
> how can I do that?
>
> thank you,
>
> karena
> --
> View this message in context:
> http://n4.nabble.com/how-to-handle-missing-values-when-importing-data-in-R-tp1012298p1012298.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

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