R help - May 2012 - [Sweave] string.prefix without hyphen-minus

Dear Sweave users,

Could you help me to find a way to place Sweave output files in a subdirectory
of the currentfolder without giving them a subname?
If the option "prefix.string=foo/" is used, all files are placed in
this folder, but begin with an hyphen-minus, which makes it difficult to work
with them. If the option "prefix=FALSE" is used, then files won't
be placed in a subdirectory.

Thanks in advance for your help,
Julia

I guess that is hard-coded in Sweave, so you probably cannot control
it unless you (partially) rewrite the driver. And just FYI, you can
try the knitr package, which does not add the hyphen for you, but the
name of the option 'prefix.string' has been changed to
'fig.path'
(http://yihui.name/knitr/options). If you set fig.path='foo/', figures
will be generated as, e.g., foo/label.pdf instead of foo/-label.pdf

utils::RweaveChunkPrefix
function (options)
{
    if (!is.null(options$label)) {
        if (options$prefix)
            chunkprefix <- paste(options$prefix.string, "-",
                options$label, sep = "")
        else chunkprefix <- options$label
    }
    else chunkprefix <- paste(options$prefix.string, "-",
formatC(options$chunknr,
        flag = "0", width = 3), sep = "")
    chunkprefix
}


Regards,
Yihui
--
Yihui Xie <xieyihui at gmail.com>
Phone: 515-294-2465 Web: http://yihui.name
Department of Statistics, Iowa State University
2215 Snedecor Hall, Ames, IA


On Fri, May 4, 2012 at 10:23 AM,  <julia.jacobson at arcor.de>
wrote:
> Dear Sweave users,
>
> Could you help me to find a way to place Sweave output files in a
subdirectory of the currentfolder without giving them a subname?
> If the option "prefix.string=foo/" is used, all files are placed
in this folder, but begin with an hyphen-minus, which makes it difficult to work
with them. If the option "prefix=FALSE" is used, then files won't
be placed in a subdirectory.
>
> Thanks in advance for your help,
> Julia
>

You cannot avoid the hyphen I think, but if you say (for example):
 "prefix.string=foo/x"
then your files start with 'x-' (so 'graph' becomes
'foo/x-graph') which may be better for you than the hyphen at the
beginning of the file name.

Rgds,
Rainer


On Friday 04 May 2012 17:23:58 julia.jacobson at arcor.de
wrote:
> Dear Sweave users,
> 
> Could you help me to find a way to place Sweave output files in a
subdirectory of the currentfolder without giving them a subname?
> If the option "prefix.string=foo/" is used, all files are placed
in this folder, but begin with an hyphen-minus, which makes it difficult to work
with them. If the option "prefix=FALSE" is used, then files won't
be placed in a subdirectory.
> 
> Thanks in advance for your help,
> Julia
> 
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