Seems related to:

https://stat.ethz.ch/pipermail/r-devel/2012-May/064213.html

Henrik
On Jul 14, 2014 10:45 AM, "Jon Olav Skoien" <jon.skoien@jrc.ec.europa.eu>
wrote:

>
> I am using tools::compactPDF for reducing the size of some pdf-files
> with GhostScript. I had some trouble in the beginning as the
> documentation seems not to match the usage of the function. For
> GhostScript, one has to set the argument gs_cmd, which has the following
> description:
> gs_cmd - Character string giving the path to the GhostScript executable,
> if that is to be used. On Windows this is the path to 'gswin32c.exe' or
> 'gswin64c.exe'. If "", the function will try to find a platform-specific
> path to GhostScript.
>
> The first part seems not to work as described. If gs_cmd is given, this
> is passed to find_gs_cmd. This function will then call:
> Sys.which(gs_cmd)
> which rather takes the name of the executable as input. I guess either
> the documentation should be changed to refer to the name of the
> GhostScript executable, or the function should be changed to use the
> given path.
>
> Best wishes,
> Jon
>
> --
> Jon Olav Skřien
> Joint Research Centre - European Commission
> Institute for Environment and Sustainability (IES)
> Climate Risk Management Unit
>
> Disclaimer: Views expressed in this email are those of the individual and
> do not necessarily represent official views of the European Commission.
>
>
>
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