R help - Aug 2012 - How to link two R packages together

Hi,
I have built two R packages. One of them (PKG1) needs to use the functions
of the other package (PKG2). 
So I need to link these two packages together, so that the functions of PKG2
can be available to PKG1. And when I load one package using
'library("PKG1")', PKG2 can be loaded at the same.
Any ideas welcome.




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Yuo can use source function.

Looking for ?source for an example.

Best,
Roberto



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Isn't this what package dependencies are for?

See the description of the DESCRIPTION file in Writing R Extensions

Michael

On Aug 1, 2012, at 5:27 PM, xuan zhao <xuan.zhao at sentrana.com> wrote:
> Hi,
> I have built two R packages. One of them (PKG1) needs to use the functions
> of the other package (PKG2). 
> So I need to link these two packages together, so that the functions of
PKG2
> can be available to PKG1. And when I load one package using
> 'library("PKG1")', PKG2 can be loaded at the same.
> Any ideas welcome.
> 
> 
> 
> 
> --
> View this message in context:
http://r.789695.n4.nabble.com/How-to-link-two-R-packages-together-tp4638765.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

I think all you need to do is add /directory/ to the library search path -- see
?.libPaths

Michael

On Aug 1, 2012, at 9:30 PM, Xuan Zhao <xuan.zhao at sentrana.com> wrote:
> Hi Michael,
> Thank you so much for your help!
> But my package is not under a directory that can be searched automatically,
namely, when load my package, I have to do:
library("PKG1",lib.loc=/directory/), in this case, how to write the
dependency?
> Like 'Depends: PKG1', where can I specify the path?
> Thank you so much again!
> Yours,
> Xuan
> 
> -----Original Message-----
> From: Michael Weylandt [mailto:michael.weylandt at gmail.com] 
> Sent: Wednesday, August 01, 2012 9:45 PM
> To: Xuan Zhao
> Cc: r-help at r-project.org
> Subject: Re: [R] How to link two R packages together
> 
> Isn't this what package dependencies are for?
> 
> See the description of the DESCRIPTION file in Writing R Extensions
> 
> Michael
> 
> On Aug 1, 2012, at 5:27 PM, xuan zhao <xuan.zhao at sentrana.com>
wrote:
> 
>> Hi,
>> I have built two R packages. One of them (PKG1) needs to use the 
>> functions of the other package (PKG2).
>> So I need to link these two packages together, so that the functions 
>> of PKG2 can be available to PKG1. And when I load one package using 
>> 'library("PKG1")', PKG2 can be loaded at the same.
>> Any ideas welcome.
>> 
>> 
>> 
>> 
>> --
>> View this message in context: 
>> http://r.789695.n4.nabble.com/How-to-link-two-R-packages-together-tp46
>> 38765.html Sent from the R help mailing list archive at Nabble.com.
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide 
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.