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 gabra...@csse.unimelb.edu.au 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

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Douglas Bates
On Tue, Jan 19, 2010 at 9:26 AM, Martin Maechler maech...@stat.math.ethz.ch wrote: Scanning for 'Matrix' in old R-help e-mail, I found GA == Gad Abraham gabra...@csse.unimelb.edu.au     on Fri, 27 Nov 2009 13:45:00 +1100 writes:    GA Hi,    GA I'd like to store large covariance matrices

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Gad Abraham
On Wed, Jan 20, 2010 at 2:26 AM, Martin Maechler maech...@stat.math.ethz.ch wrote: Scanning for 'Matrix' in old R-help e-mail, I found GA == Gad Abraham gabra...@csse.unimelb.edu.au     on Fri, 27 Nov 2009 13:45:00 +1100 writes:    GA Hi,    GA I'd like to store large covariance matrices

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Gad Abraham
On Wed, Jan 20, 2010 at 8:18 AM, Douglas Bates ba...@stat.wisc.edu wrote: On Tue, Jan 19, 2010 at 9:26 AM, Martin Maechler maech...@stat.math.ethz.ch wrote: Scanning for 'Matrix' in old R-help e-mail, I found GA == Gad Abraham gabra...@csse.unimelb.edu.au     on Fri, 27 Nov 2009 13:45:00

[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 -

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

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 dwinsem...@comcast.net 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

Re: [R] Symmetric Matrix classes

2009-11-26 Thread Gad Abraham
On Fri, Nov 27, 2009 at 2:22 PM, David Winsemius dwinsem...@comcast.net 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