On 25/06/2013 7:14 AM, Søren Højsgaard wrote:
Dear Duncan,
Excellent, thanks!
Maybe this is worth a remark in a future version of "Writing R Extensions" (including that those
"local copies" are not exported again with exportPattern("^[[:alpha:]]+")).
Yes, from the followup discussion it's clear that this is desired
behaviour, so I'll add that.
Duncan
Thanks!
Søren
-----Original Message-----
From: Duncan Murdoch [mailto:murdoch.dun...@gmail.com]
Sent: 25. juni 2013 13:02
To: Søren Højsgaard
Cc: R hELP (r-h...@stat.math.ethz.ch)
Subject: Re: [R] Issue with Imports in NAMESPACE
On 13-06-25 6:50 AM, Søren Højsgaard wrote:
> Dear all,
> In my gRbase package I have up until now "Depend"-ed on RBGL (from Bioconductor), but
good people have convinced me that I should use "Import"-it instead because I only use few
functions from RBGL.
>
> In DESCRIPTION I therefore now have
> Imports: Matrix,RBGL
>
> In NAMESPACE I now have
> importFrom(RBGL, maxClique, is.triangulated, separates)
>
> The package compiles without complaints, but I have noticed that if I start a fresh
R-session, then maxClique etc. from RBGL is NOT available for "interactive use" in
my session:
>> library(gRbase)
>> maxClique
> Error: object 'maxClique' not found
>
> 1) Is this as it should be?
>
> 2) If yes, is there any other way in which maxClique can be imported for
interactive use without Depend-ing the whole RBGL package?
The importFrom directive effectively makes local copies of those functions in
your package (with the usual caveats that copies aren't as inefficient as you
might think). If you want to export them, you need to add them to the exports
list.
Duncan Murdoch
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