[R] Function dependency function

[Matthew Dowle]

That is amazing.

foodweb(prune="<myfunct>") does precisely what I described. It even draws a
graph!

Hats off to the author Mark Bravington.

Thanks Erik for the pointer.

Regards, Matthew


> -----Original Message-----
> From: Erik Iverson [mailto:iverson at biostat.wisc.edu] 
> Sent: 31 March 2006 17:21
> To: Matthew Dowle
> Cc: 'r-help at stat.math.ethz.ch'
> Subject: Re: [R] Function dependency function
> 
> 
> I had a similar need and found package mvbutils, function foodweb().
> 
>  From the help file:
> 
>   'foodweb' is applied to a group of functions (e.g. all those in a
>       workspace); it produces a graphical display showing the 
> hierarchy
>       of which functions call which other ones. This is handy, for
>       instance, when you have a great morass of functions in a
>       workspace, and want to figure out which ones are meant to be
>       called directly. 'callers.of(funs)' and 'callees.of(funs)' show
>       which functions directly call, or are called directly 
> by, 'funs'.
> 
> Hope that helps,
> Erik Iverson
> 
> Matthew Dowle wrote:
> > Hi,
> > 
> > Is there a function taking a function as an argument, which returns 
> > all the functions it calls, and all the the functions those 
> functions call, and so
> > on?    I could use Rprof, but that would involve executing 
> the function,
> > which may miss some branches of code.   I'd really like a 
> function which
> > looks at the source code to work out all the functions that 
> could possibly
> > be called.   When I develop a function and release to 
> production environment
> > (or to some library) then I may need to release other 
> functions I've 
> > developed which that function calls.  As soon as the function call 
> > stack goes outside .GlobalEnv (for example into base) then 
> the search 
> > can stop as I'm only interested in functions in .GlobalEnv  (my own 
> > functions).  Also useful would be the reverse function  
> i.e.  find all 
> > functions which could possibly call the function.  This 
> could be used 
> > to find functions which are never called and could be 
> considered for 
> > deletion.
> > 
> > Thanks,
> > Matthew
> > 
> > 
> > 
> > 	[[alternative HTML version deleted]]
> > 
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