R help - Jan 2014 - Find the package of a class given classname

How to find the package of a class given classname?
For example, there is a class called GAlignments, I want to do something
like
attr("GAlignments", "package") that gives you the package
where the class
is defined? But of course, attr("GAlignments", "package")
won't work...

Thanks for any help!
Yuan

	[[alternative HTML version deleted]]

This probably doesn't answer your question, but, amazingly enough, try
googling the class name.
It worked for GAlignmnets.

Incidentally, there's no reason class names have to be unique among R
packages.. And they can be hidden in namespaces.

Cheers,
Bert


Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374

"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
H. Gilbert Welch




On Fri, Jan 10, 2014 at 6:49 PM, Yuan Luo <yuan.hypnos.luo at gmail.com>
wrote:
> How to find the package of a class given classname?
> For example, there is a class called GAlignments, I want to do something
> like
> attr("GAlignments", "package") that gives you the
package where the class
> is defined? But of course, attr("GAlignments",
"package") won't work...
>
> Thanks for any help!
> Yuan
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> 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.

Hi Yuan,

On 01/10/2014 06:49 PM, Yuan Luo wrote:
> How to find the package of a class given classname?
> For example, there is a class called GAlignments, I want to do something
> like
> attr("GAlignments", "package") that gives you the
package where the class
> is defined? But of course, attr("GAlignments",
"package") won't work...
You didn't say whether you wanted to be able to do this
programmatically.

If that's the case maybe you're lucky and the package where the class
is defined is already attached to your session. In that case:


   > attr(class(new("GAlignments")), "package")
   [1] "GenomicRanges"

Otherwise, if the package in question is installed but not attached
you can still do:

   ??`GAlignments-class`

If the package is not installed but you have a vague idea that this
could be a Bioconductor container, then search the bioconductor
mailing list:

   http://bioconductor.org/help/mailing-list/

If that still doesn't give you the answer, then you're welcome to ask
on the list.

Cheers,
H.

PS: If you're using the current devel version of BioC (requires R devel)
the GAlignments class has moved to the new GenomicAlignments package.
>
> Thanks for any help!
> Yuan
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
>
-- 
Herv? Pag?s

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