[R] Is there a bug in qr(..,LAPACK=T)

[Adelchi Azzalini]

On Wednesday 16 July 2003 20:50, Mike Meyer wrote:
> Several people have kindly (and gently) pointed out that the ?qr
> documentation states that rank detection does not work for the LAPACK case.
>  Its my fault for assuming that rank detection did work. --Mike

sprictly speaking is your "fault",
however it seems sensible that qr(..) returns the rank value as NULL or NA 
when LAPACK=TRUE -- since it does not try to evaluate it -- instead of
always returning `full rank'.

regards, Adelchi
-- 
Adelchi Azzalini  <azzalini at stat.unipd.it>
Dipart.Scienze Statistiche, Università di Padova, Italia
http://azzalini.stat.unipd.it/