Re: [R] Symmetric Matrix classes

2010-01-19 Thread Gad Abraham
On Wed, Jan 20, 2010 at 8:18 AM, Douglas Bates wrote: > On Tue, Jan 19, 2010 at 9:26 AM, Martin Maechler > wrote: >> Scanning for 'Matrix' in old R-help e-mail, I found >> >>> "GA" == Gad Abraham >>>     on Fri, 27 Nov 2009 13:45:00 +1100 writes: >> >>    GA> Hi, >>    GA> I'd like to st

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Gad Abraham
On Wed, Jan 20, 2010 at 2:26 AM, Martin Maechler wrote: > Scanning for 'Matrix' in old R-help e-mail, I found > >> "GA" == Gad Abraham >>     on Fri, 27 Nov 2009 13:45:00 +1100 writes: > >    GA> Hi, >    GA> I'd like to store large covariance matrices using Matrix classes. > >    GA> dsy

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Douglas Bates
On Tue, Jan 19, 2010 at 9:26 AM, Martin Maechler wrote: > Scanning for 'Matrix' in old R-help e-mail, I found > >> "GA" == Gad Abraham >>     on Fri, 27 Nov 2009 13:45:00 +1100 writes: > >    GA> Hi, >    GA> I'd like to store large covariance matrices using Matrix classes. > >    GA> dsy

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Martin Maechler
Scanning for 'Matrix' in old R-help e-mail, I found > "GA" == Gad Abraham > on Fri, 27 Nov 2009 13:45:00 +1100 writes: GA> Hi, GA> I'd like to store large covariance matrices using Matrix classes. GA> dsyMatrix seems like the right one, but I want to specify just the

Re: [R] Symmetric Matrix classes

2009-11-26 Thread Gad Abraham
On Fri, Nov 27, 2009 at 2:22 PM, David Winsemius wrote: > > On Nov 26, 2009, at 9:45 PM, Gad Abraham wrote: > >> Hi, >> >> I'd like to store large covariance matrices using Matrix classes. >> >> dsyMatrix seems like the right one, but I want to specify just the >> upper/lower triangle and diagonal

Re: [R] Symmetric Matrix classes

2009-11-26 Thread David Winsemius
On Nov 26, 2009, at 11:00 PM, Gad Abraham wrote: On Fri, Nov 27, 2009 at 2:22 PM, David Winsemius > wrote: On Nov 26, 2009, at 9:45 PM, Gad Abraham wrote: Hi, I'd like to store large covariance matrices using Matrix classes. dsyMatrix seems like the right one, but I want to specify just th

Re: [R] Symmetric Matrix classes

2009-11-26 Thread David Winsemius
On Nov 26, 2009, at 9:45 PM, Gad Abraham wrote: Hi, I'd like to store large covariance matrices using Matrix classes. dsyMatrix seems like the right one, but I want to specify just the upper/lower triangle and diagonal and not have to instantiate a huge n^2 vector just for the sake of having

[R] Symmetric Matrix classes

2009-11-26 Thread Gad Abraham
Hi, I'd like to store large covariance matrices using Matrix classes. dsyMatrix seems like the right one, but I want to specify just the upper/lower triangle and diagonal and not have to instantiate a huge n^2 vector just for the sake of having half of it ignored: Dumb example: M <- new("dsyMatr