[R] Adding .R to source file keeps R from reading it?

Izmirlian, Grant (NIH/NCI) [E] izmirlig at mail.nih.gov
Sat Sep 23 02:47:35 CEST 2006

So...are you trying to modify a contributed package by adding a *.R file
to the 'R' subdirectory in the package?  One thing to consider besides
the previous tip is that the package might be using a NAMESPACE, which
lives in the package root directory (one directory up from the 'R' 
subdirectory).  If so, then you must add the name of your function
to the argument list of the call to 'export' in the NAMESPACE file

e.g.  export(sortgenes, pvalues, MyFunction)

-----Original Message-----
From: John Tillinghast [mailto:tilling at gmail.com]
Sent: Thu 9/21/2006 9:55 PM
To: r-help at stat.math.ethz.ch
Subject: Re: [R] Adding .R to source file keeps R from reading it?
Yes, this was exactly the problem: I was using the unzipped package, not the
Now it works!

---------- Forwarded message ----------
From: Deepayan Sarkar <deepayan.sarkar at gmail.com>
Date: Sep 21, 2006 2:58 PM
Subject: Re: [R] Adding .R to source file keeps R from reading it?
To: John Tillinghast <tilling at gmail.com>
Cc: r-help at stat.math.ethz.ch

On 9/21/06, John Tillinghast <tilling at gmail.com> wrote:
> Hi,
> I'm updating the LMGene package from Bioconductor. "Writing R Extensions"
> suggests
> that all source files (the ones in the R directory) have a .R ending, so I
> added it to the (one) source file.
> The next time I installed and ran R, R didn't understand any of the
> functions.
> I tried various things and eventually went back to the file and dropped
> .R ending, installed, ran R. It worked!
> For purposes of distributing the package, do I want to leave the name
> without the .R, or add the .R and change something else?

I'm guessing that the "source" you are working on has been obtained by
unzipping the windows binary zip file. Despite appearances, that is
not the source code. For the proper source code, download the file
that's marked as source. In this case,


clearly labels the following as "Source" (and the corresponding zip
file as "Windows Binary")


This likely answers your other question as well.


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