R devel - Feb 2006 - Request for showWarnings parameter for write.table

Madams & Sirs,
  I use write.table to write CSV files to generate reports for my colleagues to
open in their spreadsheet application of choice.  I often append data of
dissimilar structure to the same file, i.e. a few summary lines and then
additional data of some number of columns.

Normally write.table produces:
> write.table(etest[,writevars],file=fname,row.names=FALSE,col.names=TRUE,
	append=TRUE,sep=",")
Warning message:
appending column names to file in: write.table(etest[, writevars], file = fname,
row.names = FALSE,


Therefore I resort to:
> options(warn=-1)
>
write.table(etest[,writevars],file=fname,row.names=FALSE,col.names=TRUE,append=TRUE,sep=",")
> options(warn=0)

However I thought that perhaps a parameter such as included for dir.create would
be more elegant:
> write.table(etest[,writevars],file=fname,row.names=FALSE,col.names=TRUE,
	append=TRUE,sep=",",showWarnings=FALSE)


where showWarnings would default to TRUE.

Please cc: replies to leif at reflectivity.com

Thank you.


Leif Kirschenbaum
Senior Yield Engineer
Reflectivity, Inc.
(408) 737-8100 x307
leif at reflectivity.com

You might also check out suppressWarnings, e.g.

suppressWarnings(write.table(...whatevever...))



On 2/27/06, Leif Kirschenbaum <leif at reflectivity.com>
wrote:
> Madams & Sirs,
>  I use write.table to write CSV files to generate reports for my colleagues
to open in their spreadsheet application of choice.  I often append data of
dissimilar structure to the same file, i.e. a few summary lines and then
additional data of some number of columns.
>
> Normally write.table produces:
> >
write.table(etest[,writevars],file=fname,row.names=FALSE,col.names=TRUE,
>        append=TRUE,sep=",")
> Warning message:
> appending column names to file in: write.table(etest[, writevars], file =
fname, row.names = FALSE,
>
>
> Therefore I resort to:
>
> > options(warn=-1)
> >
write.table(etest[,writevars],file=fname,row.names=FALSE,col.names=TRUE,append=TRUE,sep=",")
> > options(warn=0)
>
>
> However I thought that perhaps a parameter such as included for dir.create
would be more elegant:
> >
write.table(etest[,writevars],file=fname,row.names=FALSE,col.names=TRUE,
>        append=TRUE,sep=",",showWarnings=FALSE)
>
>
> where showWarnings would default to TRUE.
>
> Please cc: replies to leif at reflectivity.com
>
> Thank you.
>
>
> Leif Kirschenbaum
> Senior Yield Engineer
> Reflectivity, Inc.
> (408) 737-8100 x307
> leif at reflectivity.com
>
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