[R] Storing and managing custom R functions for re-use

[Bert Gunter]

These sorts of tasks can be automated. See:

?Startup

-- Bert

On Tue, Jul 12, 2011 at 2:48 PM, Steve Taylor <steve.taylor at aut.ac.nz> wrote:
> My solution to the clutter problem is this: at start-up time, create a list of functions, attach the list and then delete the list.  I haven't delved into making packages yet.
>
> if (any(search()=="MyFunctions")) detach(MyFunctions)
> MyFunctions <- list()
> MyFunctions$
>  "%like%" <- function(x,y) { seq_along(x) %in% grep(y,x,ignore=TRUE) }
> MyFunctions$
>  trim <- function(txt) { gsub("^ +| +$", "", txt) }
> # You can also put data into the list:
> MyFunctions$
>  tau = 2 * pi
> # etc...
> attach(MyFunctions)
> rm(MyFunctions)
>
> All that is in MyFunctions.R which I can source() again when I update it.
>
>>>>
>
> From: "Abhijit Dasgupta, PhD" <aikidasgupta at gmail.com>
> To:<s.chamaille at yahoo.fr>
> CC:<r-help at r-project.org>
> Date: 10/Jul/2011 1:40a
> Subject: Re: [R] Storing and managing custom R functions for re-use
> I think most of us are in a similar situation. I've usually kept mine in
> a file which is sourced when I start R. The main problem I have with
> this is that it clutters up my environment with a lot of stuff I don't
> need all the time. I'm in the process of creating a custom package which
> will be lazy-loaded. I believe a previous discussion of this topic
> suggested this as the preferred method.
>
>
>
>        [[alternative HTML version deleted]]
>
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> and provide commented, minimal, self-contained, reproducible code.
>



-- 
"Men by nature long to get on to the ultimate truths, and will often
be impatient with elementary studies or fight shy of them. If it were
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-- Maimonides (1135-1204)

Bert Gunter
Genentech Nonclinical Biostatistics