R devel - Feb 2005 - Undocumented S4 methods: generic coerce and siglist matrix, Massvector

Hi,
While checking the package I am getting all the time the following 
complain about the function:


Undocumented S4 methods:
  generic coerce and siglist matrix,Massvector


I have not defined the function nowhere in the R files.
My gues is that this has something to do with the following definition 
of the setAs function.

setAs("matrix","Massvector"
      ,def= function(from)
      {
        return(new("Massvector",from))
      }
      )

The problem is not to cheat the check mechanism. I knew that the warning 
can be elminitad by by defining an alias of this function in one of the 
Rd files.

Yours

Eryk

-- 
Dipl. bio-chem. Witold Eryk Wolski
MPI-Moleculare Genetic
Ihnestrasse 63-73 14195 Berlin
tel: 0049-30-83875219                 __("<    _
http://www.molgen.mpg.de/~wolski      \__/    'v'
http://r4proteomics.sourceforge.net    ||    /   \
mail: witek96@users.sourceforge.net    ^^     m m
      wolski@molgen.mpg.de

Witold Eryk Wolski wrote:
> Hi,
> While checking the package I am getting all the time the following 
> complain about the function:
> 
> 
> Undocumented S4 methods:
>  generic coerce and siglist matrix,Massvector
> 
> 
> I have not defined the function nowhere in the R files.
> My gues is that this has something to do with the following definition 
> of the setAs function.
> 
> setAs("matrix","Massvector"
>      ,def= function(from)
>      {
>        return(new("Massvector",from))
>      }
>      )
It certainly does.  From the documentation of setAs():

----------------
With this explanation as background, the function setAs does a fairly 
obvious computation: It constructs and sets a method for the function 
coerce with signature c(from, to), using the def argument to define the 
body of the method.
-------------------
> 
> The problem is not to cheat the check mechanism. I knew that the warning
> can be elminitad by by defining an alias of this function in one of the 
> Rd files.
No cheating seems needed.  The setAs() call is part of your software & 
presumably you document it somewhere.  You do have to construct the 
corresponding alias in the same .Rd file, but it doesn't amount to cheating.

It's true that a user would have to be unusually well-informed to know 
how to ask for the corresponding documentation explicitly.
> 
> Yours
> 
> Eryk
>