[R] Sparse Matrices in R
rkoenker at uiuc.edu
Tue Aug 31 23:57:38 CEST 2004
Take a look at the package SparseM
url: www.econ.uiuc.edu/~roger Roger Koenker
email rkoenker at uiuc.edu Department of Economics
vox: 217-333-4558 University of Illinois
fax: 217-244-6678 Champaign, IL 61820
On Aug 31, 2004, at 4:52 PM, Danny Heuman wrote:
> I have data in i,j,r format,
> where r is the value in location A[i,j] for some imaginary matrix A.
> I need to build this matrix A, but given the sizes of i and j, I
> believe that using a sparse format would be most adequate.
> Hopefully this will allow me to perform some basic matrix manipulation
> such as multiplication, addition, rowsums, transpositions, subsetting
> etc etc.
> Is there any way to achieve this goal in R?
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