[R] Non-central distributions

Brett Presnell presnell at stat.ufl.edu
Fri Oct 18 19:55:57 CEST 2002

In message <15791.44578.187614.230488 at gargle.gargle.HOWL> you write:
> probably an exercise of reading the sections in Johnson et al
> (see "HRK" below). I remember having seen quite a few references there.
> Contributions are welcome..
> ...
> In the next major version of R, 1.7.x,
> I plan to have finished the code for rchisq(*, ncp = *)
> {and possibly for some of  ?chisq(*, df = 0, *) }
> thanks to a suggestion from Hans R. Kuensch:

I haven't followed this entire thread, so I apologize if I'm
completely off the mark, especially since I strongly suspect that
Martin and others would be aware of this information already.

Still, FWIW, probably all of these routines are available, albeit in
Fortran, in Barry W. Brown, James Lovato, and Kathy Russell's cdflib,
which seems to be unencumbered by any license restrictions.  I have
used this library before without any problems, and I'm sure that I
have dynloaded it into Splus, and probably into R as well.  Maybe it
would at least be useful as a reference while you code this up in C?
Should be on statlib.

Brett Presnell
Department of Statistics
University of Florida

"We don't think that the popularity of an error makes it the truth."
   -- Richard Stallman
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