Thanks for the Rxpert advice! I am up and running again...
Oscar
On Wed, Nov 18, 2009 at 5:57 AM, Colin Millar <c.mil...@marlab.ac.uk> wrote:
> I think you just missed some commas out...
>
> aar <-
> function(command = c("scrn", "dx", "df"))
> {
> command <- match.arg(command)
> switch(command,
> scrn = cat("scrn :Screening","\n"),
> dx = cat("dx :Diagnosis","\n"),
> df = cat("df :Don't Forget","\n")
> )
> }
>
> Colin.
>
>
> Ps you don't need the curly brackets here if theres only one expresion,
> and sometimes its good to restrict the inputs to only those you want
> So that
>
> aar("something wrong")
>
> # Error in match.arg(command) : 'arg' should be one of "scrn", "dx",
> "df"
>
>
> -----Original Message-----
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
> On Behalf Of oscar linares
> Sent: 18 November 2009 10:40
> To: r-help@r-project.org
> Subject: [R] Switch Help
>
> Dear Rexperts,
>
> Given,
>
> aar <-function(command) {
>
> switch(command,
> {scrn = cat("scrn :Screening","\n")}
> {dx = cat("dx :Diagnosis","\n")}
> {df = cat("df :Don't Forget","\n")}
> )
> }
>
> I want to be able to do:
>
> aar("dx") # function does cat("dx :Diagnosis","\n")
>
> aar(c("dx","df")) # function does cat("dx :Diagnosis","\n")
> # function does df = cat("df :Don't
> Forget","\n")
>
> BUT IT IS NOT WORKING FOR ME.
>
> Please help:-)
>
> --
> Oscar
> Oscar A. Linares, MD
> Translational Medicine Unit
> LaPlaisance Bay, Bolles Harbor
> Monroe, Michigan
>
> [[alternative HTML version deleted]]
>
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--
Oscar
Oscar A. Linares, MD
Translational Medicine Unit
LaPlaisance Bay, Bolles Harbor
Monroe, Michigan
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