[R] Sparse Matrices in R

[roger koenker]

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?
> Thanks,
>
> Danny
>
> 	[[alternative HTML version deleted]]
>
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