R devel - May 2012 - modifying some package code

Greetings,

I am working on modifying some code from the nlme package.  I have had many
discussions on the mixed models mailing list and have been directed to
simply 'hack' the source code to have the degrees of freedom generated
by
one function to use in the output of another function that doesn't generate
them.  My current holdup is an error regarding a .c file called
'inner_perc_table' called by the .C function.  The error states that the
object 'inner_perc_table' is not found.  My confusion lies in the fact
that
when I run the original script, it recognizes the part just fine.  At no
point is the object defined and I cannot currently find such a code in the
package's source.  Perhaps someone here is familiar with the nlme package
and could assist me in some form.  If you need further information, please
ask as I don't know if there is a general answer for this type of question
or if you will need the actual code.

Regards,
Charles

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On May 24, 2012, at 12:25 PM, Charles Determan Jr wrote:
> Greetings,
> 
> I am working on modifying some code from the nlme package.  I have had many
> discussions on the mixed models mailing list and have been directed to
> simply 'hack' the source code to have the degrees of freedom
generated by
> one function to use in the output of another function that doesn't
generate
> them.  My current holdup is an error regarding a .c file called
> 'inner_perc_table' called by the .C function.  The error states
that the
> object 'inner_perc_table' is not found.  My confusion lies in the
fact that
> when I run the original script, it recognizes the part just fine.  At no
> point is the object defined and I cannot currently find such a code in the
> package's source.  Perhaps someone here is familiar with the nlme
package
> and could assist me in some form.  If you need further information, please
> ask as I don't know if there is a general answer for this type of
question
> or if you will need the actual code.
> 
The (unexported) object contains cached reference to the native function (see
?getNativeSymbolInfo) and is defined by R_registerRoutines in src/init.c. This
is a typical optimization in R packages to avoid costly lookup of symbols and to
provide check for native arguments.

Cheers,
Simon