Re: [ublas] fill the entries of sparse and dense matrices

From: choon (teochoonhui_at_[hidden])
Date: 2007-07-11 22:06:12

Hi nico,

Nico Galoppo wrote:
> 
> Choon,
> 
> For sparse matrices, look at Gunter's examples:
> 
> http://www.guwi17.de/ublas/matrix_sparse_usage.html
> 
> --nico
> 

Thanks for your reply. Actually, what I was looking for is the way to access
the memory location used by compressed_matrix, i.e., the rowptr, col and
val.
In other words, can I access the underlying mem location of index1_data(),
index2_data() and value_data() directly? Are those data structures allocated
sufficient memory space (assumming I provide num_row, num_col and nnz to the
compressed_matrix constructor)?

Thank you very much in advance,
Choon
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