[Rd] Fortran routines from LINPACK in S+ but not R

[fharrell@virginia.edu]

Prof Brian Ripley wrote:
> 
> On Thu, 23 Aug 2001 fharrell@virginia.edu wrote:
> 
> > Dear R Developers,
> >
> > I should have had the Design library running in R by now but
> > have kept putting off changing some calls to LINPACK routines
> > to use those builtin to R.  Specifically I call dqrsl1 and dqr.
> > Would it be an easy task to put those in the next release of
> > R?  If not I'll finally bite the bullet and get back into
> > reading LINPACK documentation (which I have but haven't
> > examined in depth).
> >
> > If dqrsl1 and dqr are not truly parts of LINPACK but are
> > front-ends to routines that are, and if anyone has
> > those front-ends to share, that would also solve my problem
> > immediately.
> 
> I am pretty sure that they are not part of LINPACK: certainly dqr is not
> and neither has a LINPACK name.  dqr is called by qr.default in S-PLUS,
> and you should find dqrdc2 (also not LINPACK) called by R's qr an adequate
> substitute.

Thanks

> 
> As for dqrsl1, I've never known exactly what it supposed to do.
> Would dqrsl (which is there) suffice?

It probably will, after I get into it.  Calls are very different
on the surface.  Thanks -Frank

> 
> --
> Brian D. Ripley,                  ripley@stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272860 (secr)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595

-- 
Frank E Harrell Jr              Prof. of Biostatistics & Statistics
Div. of Biostatistics & Epidem. Dept. of Health Evaluation Sciences
U. Virginia School of Medicine  http://hesweb1.med.virginia.edu/biostat
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