Re: [R] matrix.csr %*% matrix --> matrix

2012-11-07 Thread Sam Steingold
> * Martin Maechler [2012-11-07 10:10:51 +0100]: > >> "Sam" == Sam Steingold >> on Tue, 6 Nov 2012 13:08:30 -0500 writes: > > Sam> The question is even more pressing for me now given that I no longer > can > Sam> convert some csr matrices to the regular ones for scaling. >

Re: [R] matrix.csr %*% matrix --> matrix

2012-11-07 Thread Martin Maechler
> "Sam" == Sam Steingold > on Tue, 6 Nov 2012 13:08:30 -0500 writes: Sam> The question is even more pressing for me now given that I no longer can Sam> convert some csr matrices to the regular ones for scaling. Sam> (http://article.gmane.org/gmane.comp.lang.r.general:2793

Re: [R] matrix.csr %*% matrix --> matrix

2012-11-06 Thread Sam Steingold
The question is even more pressing for me now given that I no longer can convert some csr matrices to the regular ones for scaling. (http://article.gmane.org/gmane.comp.lang.r.general:279305) Any suggestions? (the original csr matrix is too large to be converted to a regular one, but the product is

[R] matrix.csr %*% matrix --> matrix

2012-08-27 Thread Sam Steingold
When a sparse matrix is multiplied by a regular one, the result is usually not sparse. However, when matrix.csr is multiplied by a regular matrix in R, a matrix.csr is produced. Is there a way to avoid this? Thanks! -- Sam Steingold (http://sds.podval.org/) on Ubuntu 12.04 (precise) X 11.0.1110300