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diff util/ksvd utils/sprow.m @ 70:c3eca463202d

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author idamnjanovic
date Wed, 16 Mar 2011 14:16:57 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/ksvd utils/sprow.m	Wed Mar 16 14:16:57 2011 +0000
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+%SPROW Extract row of sparse matrix.
+%  X = SPROW(A,J) where A is a sparse matrix, returns the nonzero values in
+%  the row A(J,:).
+%
+%  [X,ID] = SPROW(A,J) also returns the column indices of the nonzeros.
+%
+%  Note that the call [X,ID] = SPROW(A,J) is equivalent (but more efficient
+%  than) the Matlab code
+%
+%    IDS = find(A(J,:)); 
+%    X = A(J,IDS);
+
+
+%  Ron Rubinstein
+%  Computer Science Department
+%  Technion, Haifa 32000 Israel
+%  ronrubin@cs
+%
+%  August 2009