R help - Apr 2006 - gsub in data frame

Hello,

I have this data frame:

### begin

d <-data.frame(matrix(c("1","--","bla",2),2,2))
d

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

# 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

**************************************************
AVIS DE NON-RESPONSABILITE: Ce document transmis par courrie...{{dropped}}

Hi

On 5 Apr 2006 at 7:48, Lapointe, Pierre wrote:

From:           	"Lapointe, Pierre" <Pierre.Lapointe at nbf.ca>
To:             	"'r-help at stat.math.ethz.ch'" <r-help at
stat.math.ethz.ch>
Date sent:      	Wed, 5 Apr 2006 07:48:33 -0400
Subject:        	[R] gsub in data frame
> Hello,
> 
> I have this data frame:
> 
> ### begin
> 
> d
<-data.frame(matrix(c("1","--","bla",2),2,2))
> d
> 
> # I want to replace the "--" by "\N" and still get a
data frame.
> 
> # 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?
re formate it back?

data.frame(matrix(out,2,2))
    X1  X2
 1   1 bla
 2 \\N   2

HTH
Petr

>
> 
> Regards,
> 
> Pierre Lapointe
> 
> **************************************************
> AVIS DE NON-RESPONSABILITE: Ce document transmis par
> courrie...{{dropped}}
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
Petr Pikal
petr.pikal at precheza.cz

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
>
> **************************************************
> AVIS DE NON-RESPONSABILITE: Ce document transmis par courrie...{{dropped}}
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>
-- 
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)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595