[R] g(x,y) = f(x,y) - e(x)- e(y)?

[Greg Snow]

It is not clear exactly what you want to do by subtracting a vector from a matrix, but look at the "sweep" function, it may do what you want.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
(801) 408-8111
 
 

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of William Simpson
> Sent: Wednesday, April 23, 2008 4:59 AM
> To: Philipp Pagel
> Cc: r-help at r-project.org
> Subject: Re: [R] g(x,y) = f(x,y) - e(x)- e(y)?
> 
> Thanks Phipp very much for your help. I had meant, given that 
> I'd computed the matrix f[x,y] and the vector e[x], how to 
> take the difference. What is confusing is how to subtract a 
> vector from a matrix. I don't want the recycling rule.
> 
> Cheers
> Bill
> 
> On Tue, Apr 22, 2008 at 9:53 AM, Philipp Pagel 
> <p.pagel at wzw.tum.de> wrote:
> >
> >  > g(x,y) = f(x,y) - e(x)- e(y)
> >  > These are continuous functions. I am not sure how to do 
> this with 
> > the  > discrete equivalents in R.
> >
> >  Is this what you are looking for?
> >
> >  g <- function(x, y) {
> >
> >         f(x,y) - e(x) - e(y)
> >  }
> >
> >  cu
> >         Philipp
> >
> >  --
> >  Dr. Philipp Pagel
> >  Lehrstuhl für Genomorientierte Bioinformatik  Technische 
> Universität 
> > München  Wissenschaftszentrum Weihenstephan  85350 
> Freising, Germany  
> > http://mips.gsf.de/staff/pagel
> >
> >  ______________________________________________
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> >
> 
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