[R] .Rprofile, .Rfirst, and .Rdata

David Richmond daver969 at yahoo.com
Thu Feb 6 07:45:07 CET 2003

On Wednesday, February 5, 2003, at 09:30  PM, Henrik Bengtsson wrote:

> What do you have in .First() that you can not have directly in the
> .Rprofile script? For example:

Nothing that I can think of, but it's the principle of the thing. If i 
did have a reason to change .First, how would I do it ? More generally, 
suppose I want to ensure a variable is set to a certain value in 
.Rprofile, how can I be sure that R.data won't overwrite it? It just 
seems like loading .Rdata after .Rprofile makes it difficult to change 
things easily.

> # ~/.Rprofile
> cat("Running my .Rprofile...");
> library(modreg)
> cat("Running my .Rprofile...done");
> Henrik Bengtsson
>> -----Original Message-----
>> From: r-help-admin at stat.math.ethz.ch
>> [mailto:r-help-admin at stat.math.ethz.ch] On Behalf Of David Richmond
>> Sent: den 6 februari 2003 13:57
>> To: r-help at stat.math.ethz.ch
>> Subject: [R] .Rprofile, .Rfirst, and .Rdata
>> Hi all,
>> 	After a short hiatus away from R I have found that it's
>> changed a bit.
>> I used to keep a definition of .First in .Rprofile that did a
>> couple of
>> things on startup (load a couple of libraries). Now, I've discovered
>> that when I change the definition of .First in .Rprofile it doesn't
>> change anything when I start up, because .First is held over
>> in .Rdata
>> from the last session. The manual states that now .Rdata is loaded
>> last, as intended. My question is, how do I change what's in
>> .First (or
>> any other variable, for that matter), if .Rdata will always
>> override my
>> changes? (I'd prefer not to have to do it manually, and I'd prefer to
>> have all the other data preserved, rather than just leaving
>> out .Rdata)
>> Dave R.
>> ______________________________________________
>> R-help at stat.math.ethz.ch mailing list
>> http://www.stat.math.ethz.ch/mailman/listinfo/> r-help

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