Groups > comp.soft-sys.math.mathematica > #3804

Find position of nonzero elements

From	Dominic Wörner <dominic.woerner@mpi-hd.mpg.de>
Newsgroups	comp.soft-sys.math.mathematica
Subject	Find position of nonzero elements
Date	2011-07-19 10:54 +0000
Organization	Steven M. Christensen and Associates, Inc and MathTensor, Inc.
Message-ID	<j03npq$9ub$1@smc.vnet.net> (permalink)

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Hi,

How can I find the indices i and j of all nonzero elements of a matrix. 
I want that because there are only some nonzero elements in a huge 
matrix.

Best regards,
Dominic

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Find position of nonzero elements Dominic Wörner <dominic.woerner@mpi-hd.mpg.de> - 2011-07-19 10:54 +0000

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