R help - Aug 2002 - filename of source file

Hi
	Is there a command which will return the complete pathname of the 
file from which the current source is being read? I want something which 
can be inserted into any .r file and it will be able to ascertain 
exactly where it is, so that it can save data to the same directory, no 
matter where it is, regardless of what the current working directory is.

Dave Richmond
daver969 at mac.com
------------------------------------------------------
"It works on a complex scientific principle
known as pot luck." - The Doctor

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Yes, source refers to the use of the source() function. Suppose I invoke 
a file like so:

source("/path/name/filename.r")

I want to insert a command in filename.r like so:

fullpath <- magic_command()

such that fullpath is now "/path/name/filename.r"

In other words, I want filename.r to be able to figure out where it is, 
regardless of where I put it, so that it can save all its output in the 
same directory.

dave r


On Sunday, August 4, 2002, at 10:09 PM, Andrew C. Ward wrote:
> Dave,
>
> You may like to give an example usage since I'm not 100% sure what you 
> wish
> to achieve. Does "current source" refer to the source() command,
to
> read.table(),
> or to something else?
>
> You may like to create a variable save.dir in your .Rprofile or in your
> working
> session that points to the folder you want everything saved in.
>
> Regards,
>
> Andrew C. Ward
>
> CAPE Centre,
> The University of Queensland
> Brisbane Qld 4072 Australia
> andreww at cheque.uq.edu.au
>
> ----- Original Message -----
> From: David Richmond <daver969 at mac.com>
> To: <r-help at stat.math.ethz.ch>
> Sent: Monday, August 05, 2002 12:31 PM
> Subject: [R] filename of source file
>
>
>> Hi
>> Is there a command which will return the complete pathname of the
>> file from which the current source is being read? I want something 
>> which
>> can be inserted into any .r file and it will be able to ascertain
>> exactly where it is, so that it can save data to the same directory, no
>> matter where it is, regardless of what the current working directory 
>> is.
>>
>> Dave Richmond
>> daver969 at mac.com
>> ------------------------------------------------------
>> "It works on a complex scientific principle
>> known as pot luck." - The Doctor
>>
>>
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
>> -.
> -.-.-
>> r-help mailing list -- Read
> http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
>> Send "info", "help", or "[un]subscribe"
>> (in the "body", not the subject !)  To: r-help-
>> request at stat.math.ethz.ch
>>
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David Richmond wrote:
> Yes, source refers to the use of the source() function. Suppose I invoke
> a file like so:
>
> source("/path/name/filename.r")
>
> I want to insert a command in filename.r like so:
>
> fullpath <- magic_command()
>
> such that fullpath is now "/path/name/filename.r"
>
How about

source(fullpath<-"/path/name/filename.r") ?

Jim
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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