Re: [R] mget empty strings

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Fri 13 May 2005 - 00:00:10 EST

Georg Otto wrote:

> Dear R community,
>
> I am a beginner to R and have a question concerning mget, about I could
> not find anything in the various documentation.
>
> I have a column in a dataframe x for which I want to get values in y:
>
> mget(x[,1], env=y, ifnotfound=NA)
>
> I receive an error mesage:
>
> Error in mget(x[, 1], env = y, ifnotfound = NA) :
> attempt to use zero-length variable name
>
> this is probably due to the fact that some of the values in x[,1] are
> empty ("")
>
> I would like to get a "NA" for these values, and the found value for
> those where mget finds one. Could anyone tell me how this is done
> efficiently?
>
> Thanks a lot in advance!
>
> Georg
>
>
> P.S. I am in digest mode, cc'ing the answer directly to me would be nice
>
>

Is y and environment?

Please make your example reproducible - as long as I have not seen your example, I guess you don't want to use mget() at all ...

Uwe Ligges



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