[R] updating observations in lm

[Berend Hasselman]

On 27-05-2013, at 21:57, ivo welch <ivo.welch at gmail.com> wrote:

> 
> Gentlemans as 274 algorithm allows weights, so adding an obs with a weight of -1 would do the trick of removing obs, too.
> 
> This may be a good job for hadwell wickhams c code interface.

Searching for "Gentlemans as 274 algorithm" with google turned up this:

http://jblevins.org/mirror/amiller/

where there is a fortran code for am updated AS 274 algorithm.
I can't judge whether this is suitable for deleting observations.

Berend