R help - Jul 2008 - dev2bitmap error, 'gs' cannot be found

Dear List,

I am using the bioconductor package Category  to do some gene enrichment
analysis, and usually save my KEGGmnplot's using a dev2bitmap command.
This has worked just fine, until suddenly earlier today I got this
error-message:
> dev2bitmap("04610_080721.jpg",type="jpeg", height = 10,
width = 10,
res = 200)
Error in dev2bitmap("04610_CSF080721.jpg", type = "jpeg",
height = 10,  :
  sorry, 'gs' cannot be found

I don't know what this means, it seems to be something about my
environment. 
(From dev2bitmap function:)
gsexe <- Sys.getenv("R_GSCMD")
    if (is.null(gsexe) || !nzchar(gsexe)) {
        gsexe <- "gs"
        rc <- system(paste(shQuote(gsexe), "-help > /dev/null"))
        if (rc != 0)
            stop("sorry, 'gs' cannot be found")
    }
I cant figure out how to fix this. I am not an experienced programmer.
Any help or tips would be greatly appreciated.

Thank you,
Boel

--~*~**~***~*~***~**~*~--
Boel Brynedal, MSc, PhD student
Karolinska  Institutet
Department of Clinical neuroscience

WHat OS is this (please do read the posting guide)?

The posting guide also asks you to read the help: it says

      You will need 'ghostscript': the full path to the executable can
      be set by the environment variable 'R_GSCMD'. (If this is unset
      the command '"gs"' is used, which will work if it is in
your
      path.)

If you don't know what that means, please ask your computing support desk 
for help.


On Mon, 21 Jul 2008, Boel Brynedal wrote:
> Dear List,
>
> I am using the bioconductor package Category  to do some gene enrichment
> analysis, and usually save my KEGGmnplot's using a dev2bitmap command.
> This has worked just fine, until suddenly earlier today I got this
> error-message:
>
>> dev2bitmap("04610_080721.jpg",type="jpeg", height =
10, width = 10,
> res = 200)
> Error in dev2bitmap("04610_CSF080721.jpg", type =
"jpeg", height = 10,  :
>  sorry, 'gs' cannot be found
>
> I don't know what this means, it seems to be something about my
> environment.
> (From dev2bitmap function:)
> gsexe <- Sys.getenv("R_GSCMD")
>    if (is.null(gsexe) || !nzchar(gsexe)) {
>        gsexe <- "gs"
>        rc <- system(paste(shQuote(gsexe), "-help >
/dev/null"))
>        if (rc != 0)
>            stop("sorry, 'gs' cannot be found")
>    }
> I cant figure out how to fix this. I am not an experienced programmer.
> Any help or tips would be greatly appreciated.
>
> Thank you,
> Boel
>
> --~*~**~***~*~***~**~*~--
> Boel Brynedal, MSc, PhD student
> Karolinska  Institutet
> Department of Clinical neuroscience
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
-- 
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