R help - Feb 2007 - path for source()

hello,

i have a couple of .R files distributed about my file system. i commonly
source() these from other files, but i have to include the full file path. this
is not always convenient if you move files around. is there a way of setting the
search path for source()?

thanks a lot!

cheers,
andrew.

-- 
Andrew B. Collier

Space Physics Group
Hermanus Magnetic Observatory

Honorary Research Fellow                                    tel: +27 31 2601157
Space Physics Research Institute                            fax: +27 31 2616550
University of KwaZulu-Natal, Durban, 4041, South Africa     gsm: +27 83 3813655

Here is the discussion about the function search.path()
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/34411.html
which searches the PATH variable for your script and returns the full path.

You also can put your script contents in functions, then create a package
and load it with library(). 
package.skeleton() can help you.

Anyway, source()'ing every time does not seem to be a good idea, because
every time you do this you obtain one more copy of your functions and
variables in the newly created workspace.
If you don't want to create a package, you can save your functions in a file
with the .Rdata extension and attach that file.

Try going here
https://www.stat.math.ethz.ch/pipermail/r-help/2004-July/thread.html and
searching "source()" in the page (i.e. in message headers). I believe,
discussions could provide you with several more good ideas.


colliera wrote:
> 
> i have a couple of .R files distributed about my file system. i commonly
> source() these from other files, but i have to include the full file path.
> this is not always convenient if you move files around. is there a way of
> setting the search path for source()?
> 
-- 
View this message in context:
http://www.nabble.com/-R--path-for-source%28%29-tf3191709.html#a8861457
Sent from the R help mailing list archive at Nabble.com.

Hi,
an easy way to address this is to change directory within R before 
calling source() :
setwd("D:/Projects/yourProject")
source("yourCode.R")

Of course you need to know where your .R files are.
Using getwd() you can always check where you are and using dir() you can 
check the files in your directory (which you could combine with grep() 
to search for ".R") ..

Wolfgang

colliera at ukzn.ac.za a ?crit :
> hello,
>
> i have a couple of .R files distributed about my file system. i commonly
source() these from other files, but i have to include the full file path. this
is not always convenient if you move files around. is there a way of setting the
search path for source()?
>
> thanks a lot!
>
> cheers,
> andrew.
>
>   

-- 

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
. . . . .

Wolfgang Raffelsberger, PhD
Laboratoire de BioInformatique et G?nomique Int?grative
IGBMC
1 rue Laurent Fries,  67404 Illkirch  Strasbourg,  France
Tel (+33) 388 65 3300         Fax (+33) 388 65 3276
wolfgang.raffelsberger at igbmc.u-strasbg.fr