[boost] ublas: matrix views

From: Toon Knapen (toon.knapen_at_[hidden])
Date: 2002-04-12 10:45:39

I'm looking for taking a view of a ublas matrix. What I mean is soth like :
matrix< double > a(10,10);
size_t row_indices[] = { 0, 3, 4, 9 };
size_t column_indices[] = { 2, 3, 7 };
matrix_view< matrix< double > > view( a, 
                                      row_indices, row_indices + 4,
                                      column_indices, column_indices + 3 )

to give me a 4*3 alias to the original matrix containing rows 0,3,4,9 and 
columns 2,3,7. Thus view(0,0) == a(0,2)

AFAIK soth similar is not possible at the moment (if it is, please let me 
know) so I guess I'll give it a shot to implement it in ublas.

t