[R] gsub in data frame

[Prof Brian Ripley]

On Wed, 5 Apr 2006, Lapointe, Pierre wrote:

> Hello,
>
> I have this data frame:
>
> ### begin
>
> d <-data.frame(matrix(c("1","--","bla",2),2,2))
> d

So d is a two-column data frame with factor columns.

> # I want to replace the "--" by "\N" and still get a data frame.

levels(d$X1) <- gsub("--","\\\\N", levels(d$X1))


> # I tried:
>
> out <-gsub("--","\\\\N",as.matrix(d)) #using as.matrix to get rid of factors
> out
> cat(out)
>
> # But I lost my data frame
>
> ### end
>
> Any idea?
>
> Regards,
>
> Pierre Lapointe
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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