[R] Non-central distributions

Peter Dalgaard BSA p.dalgaard at biostat.ku.dk
Thu Oct 17 17:48:48 CEST 2002

(Ted Harding) <Ted.Harding at nessie.mcc.ac.uk> writes:

> only the CDF functions 'pt' and 'pf' allow this parameter to
> be set. (If you try in the others, you get the message
> "unused argument(s) (ncp ...)").
> Why is this? Being able to set it would be just as useful ...

We don't have any references on how to calculate them! (Except for the
brute-force approaches of numeric differentiation, root finding, and
transformation of uniform distributions.)

   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch

More information about the R-help mailing list