[Rd] pd

[Ben Bolker]

marc rousseau <mk04 <at> tlb.sympatico.ca> writes:

> 
> Hi
>   I'd like to know what does the letter in pd stand for ?
> thx

  In what context?

  The only R-context answers I can think of are "Peter Dalgaard"
(an R-core member) or "positive definite" (see ?pdClasses in
the nlme package).

   You're probably not looking for <http://en.wikipedia.org/wiki/PD>

  good luck -- if you give more context you might get a more
useful answer.

  Ben Bolker