R help - Oct 2007 - Accessing scripts in a different directory on a Mac

Hi all.  A question for knowledgeable folks using R on an Intel Mac running
OS X 10.4.10

For ease of maintenance, I have broken a large R script into a main script
which ?oversees? things by calling other scripts, using ?source?.  Let?s
call the secondary scripts ?sub-scripts.?

I?d like for the sub-scripts to reside in a different directory (again, for
ease of maintenance, and so I can access them from many other directories).
I?ve looked all over the documentation about paths and filenames, but I?m
having trouble deciding which of the many functions is the one I need.

As a more specific example, my main script currently contains
source(?test.R?) and I need to do something like source(path"test.R").

Ideally, I'd like to specify path early in the file one time, and have it
apply automatically later.

Stuff in the documentation only seems to tease!

Thanks in advance, Bryan

consider something along the lines of:
>scriptdir <- '/path/to/scripts/"
>source(paste(scriptdir,'subscript.r',sep=''))

alternatively, you could try:
>workdir <- getwd()
>scriptdir <- '/path/to/scripts/"
>setwd(scriptdir)
>source('subscript.r')
>setwd(workdir)

cheers,
tim



On 10/26/07, Bryan Hanson <hanson at depauw.edu>
wrote:
> Hi all.  A question for knowledgeable folks using R on an Intel Mac running
> OS X 10.4.10
>
> For ease of maintenance, I have broken a large R script into a main script
> which ?oversees? things by calling other scripts, using ?source?.  Let?s
> call the secondary scripts ?sub-scripts.?
>
> I?d like for the sub-scripts to reside in a different directory (again, for
> ease of maintenance, and so I can access them from many other directories).
> I?ve looked all over the documentation about paths and filenames, but I?m
> having trouble deciding which of the many functions is the one I need.
>
> As a more specific example, my main script currently contains
> source(?test.R?) and I need to do something like
source(path"test.R").
>
> Ideally, I'd like to specify path early in the file one time, and have
it
> apply automatically later.
>
> Stuff in the documentation only seems to tease!
>
> Thanks in advance, Bryan
>
> ______________________________________________
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> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Tim Calkins
0406 753 997