Re: [R-pkg-devel] shadowing a method from the stats package

[qxacur]

Hi Joris,

    thank you for your reply.

    I re-read the CRAN policy after I saw your reply and you are right,
I do not need permission for this.

    About the search PATH. unifed will always be attached after stats,
so I think the unifed function would always be found before the one in
stats (please correct me if you think I am wrong).

    Still, I found a different way to solve the problem in order to
avoid NOTEs when I run 'R CMD check --as-cran', that can be considered
more robust:

    I first changed the name of my wrapper function to something
different (this is in order to avoid a note in registering S3 methods).

    then, in the zzz.R file inside of the .onLoad function I used
setMethod with where=.GlobalEnv to rewrite the summary method of the glm
class and in there I call the wrapper function.

   This gives the behavior that I wanted and it does not depend on the
search path.

Cheers,

   Oscar.

>
> Then again, I'm not sure this will always work, as you rely heavily on
> the search path for your function to be found before the one in stats.
> I would be interested as well in hearing how this can be solved in a
> more robust way, but I can't really come up with something myself.
> Interesting problem!
>
> Cheers
> Joris
>
> On Fri, Jan 11, 2019 at 10:14 PM  > wrote:
>
> Hello,
>
>     I created a package for working with a new probability
> distribution called unifed. The source code can be found at
> https://gitlab.com/oquijano/unifed .
>
>     This distribution is suitable for GLMs. I have included a a
> function called unifed in the package that returns a family that can
> be used with the glm function.
>
>     For a unifed glm, it is necessary for the dispersion parameter to
> be equal to one. The summary method of the glm class does this
> automatically for the poisson and binomial distributions and I would
> like the same for the unifed. In order to achieve this, I am
> including a summary.glm function in the package so it shadows
> stats::summary.glm when the package is attached. This function is
> actually just a wrapper around stats::summary.glm.  It simply checks
> if the family is unifed; If this is the case it calls
> stats::summary.glm with dispersion=1 and otherwise it simply calls
> stats::summary.glm with the same parameters.  Therefore introducing
> this in the namespace does not break or change the behavior of any
> existing code that uses summary.glm
>
>      According to the CRAN policies I need permission from the
> maintainer of the package for doing this. The maintainer of the
> package
> is the R core team. To whom should I write to ask for this permission?
> Otherwise is there a different way in which I could achieve the right
> default behavior and respect the CRAN policies?
>
>
> Thank you for your time.
>
> __
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>
>
>
> -- 
> Joris Meys
> Statistical consultant
>
> Department of Data Analysis and Mathematical Modelling
> Ghent University
> Coupure Links 653, B-9000 Gent (Belgium)
> 
>
> tel: +32 (0)9 264 61 79
> ---
> Biowiskundedagen 2017-2018
> http://www.biowiskundedagen.ugent.be/
>
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[R-pkg-devel] shadowing a method from the stats package

[qxacur]

Hello,

I created a package for working with a new probability
distribution called unifed. The source code can be found at
https://gitlab.com/oquijano/unifed .

This distribution is suitable for GLMs. I have included a a
function called unifed in the package that returns a family that can
be used with the glm function.

For a unifed glm, it is necessary for the dispersion parameter to
be equal to one. The summary method of the glm class does this
automatically for the poisson and binomial distributions and I would
like the same for the unifed. In order to achieve this, I am
including a summary.glm function in the package so it shadows
stats::summary.glm when the package is attached. This function is
actually just a wrapper around stats::summary.glm.  It simply checks
if the family is unifed; If this is the case it calls
stats::summary.glm with dispersion=1 and otherwise it simply calls
stats::summary.glm with the same parameters.  Therefore introducing
this in the namespace does not break or change the behavior of any
existing code that uses summary.glm
 
 According to the CRAN policies I need permission from the
maintainer of the package for doing this. The maintainer of the package
is the R core team. To whom should I write to ask for this permission?
Otherwise is there a different way in which I could achieve the right
default behavior and respect the CRAN policies?


Thank you for your time.

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