[R] Taking code from packages

[Gabor Grothendieck]

I usually place in my mypackage-package.Rd file a pointer
to the existence of a THANKS file and then put the THANKS
file in the inst directory (which gets copied to the top level
directory by the build tools during the build).  For example,
after installing dyn try:

   library(dyn)
   package?dyn

for instructions on accessing the THANKS file from within R.

On 1/13/06, Ales Ziberna <aleszib at gmail.com> wrote:
> Hello!
>
> I am currently in the process of creating (my first) package, which (when
> ready) I intend to publish to CRAN. In the process of creating this package
> I have taken some code form existing packages. I have actually copied parts
> of functions in to new functions. This code is usually something very basic
> such as Rand index. What is the proper procedure for this?
>
> Since most of R (and also the packages I have taken code form) is published
> under GPL, I think this should be OK. However I do not know if:
> 1.      I should still ask authors of the packages for permission or at
> least notify them.
> 2.      Ad references to the functions (and packages) from which I had taken
> the code or only to the references they use.
>
> What about regarding code that was sent to the list, usually as a response
> to one of my problems. I assume that in this case it is best to consult the
> author?
>
> Any comments and opinions are very welcomed!
>
> Best regards,
> Ales Ziberna
>
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