[R] adding a method to the dist function
Martin Maechler
maechler at stat.math.ethz.ch
Mon May 3 12:34:51 CEST 2004
>>>>> "Giampiero" == Giampiero Salvi <giampi at speech.kth.se>
>>>>> on Mon, 3 May 2004 11:50:38 +0200 (CEST) writes:
Giampiero> I'd like to add the Bhattacharyya method to the
Giampiero> dist function. What is the best way to do this?
Giampiero> I'm using R 1.9.0 and I was looking for the code
Giampiero> that defines the already existing distances, but
Giampiero> I didn't manage. As far as I understand, dist is
Giampiero> defined in mva that is part of the stats package
Giampiero> now, but where is the code?
All the standard R packages (such as "stats") are in
<Rsource>/src/library/
and look very much like usual R packages,
[with the exception of the 'base' package that is very special]
I.e, in
<Rsource>/src/library/stats/R/dist.R
<Rsource>/src/library/stats/man/dist.Rd
<Rsource>/src/library/stats/src/distance.c
are the R source, docu, and C code, respectively.
Where you can e.g. take and unpack
ftp://stat.ethz.ch/Software/R/R-devel.tar.gz
such that the above '<Rsource>' will be 'R-devel' for you.
If you do this, please consider contributing the three changed
files back to the R project!
Giampiero> Thank you very much,
Giampiero> Giampiero
you're welcome,
Martin
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