[R] how to abort script with message

[Blew, Ted]

Henrik,
yes, probably right, since the way i load the script is via the
'File/Open Script' command in the windows R interface.  i tried
'File/Source R code...' and that works fine.  thanks very much for your
prompt response!
ted.

-----Original Message-----
From: henrik.bengtsson at gmail.com [mailto:henrik.bengtsson at gmail.com] On
Behalf Of Henrik Bengtsson
Sent: Monday, May 21, 2007 4:23 PM
To: Blew, Ted
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] how to abort script with message

Hi,

I think the behavior that you outline is due to the fact that you
cut'n'paste the script to the R prompt, is that correct? If so, use
source() instead to run your script, then stop() will do what you want.

/Henrik

On 5/21/07, Blew, Ted <TBlew at ets.org> wrote:
> it is desired to abort an R script with a message, returning to the R 
> prompt, pending 'if' results, as follows:
> ------------------------
> first part of script
> .
> .
> if (condition) {
>  action
> } else
> {
> 'error'
> abort
> }
> .
> .
> remainder of script
> ---------------------------
>
> note: 'stop' aborts the current script expression but keeps running 
> the script.[too little]
>         'quit' aborts the r session. [too much] thx, ted
>
>
>
>
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