How does coo_matrix((data, (i, j)), [shape=(M, N)]) work?

Matti Viljamaa <[email protected]>
Newsgroups gmane.comp.python.scientific.user
Message-ID <[email protected]> 
I’m confused about the following instantiation of coo_matrix:

coo_matrix((data, (i, j)), [shape=(M, N)])

data contains the entries of the matrix in any order. Why can they be in any order? Is data a vector or a matrix?

What are i,j used for?

BR, Matti

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