Download All

Code covered by the BSD License

subsref2 (A,i,j) SUBSREF2 often a faster way to compute C=A(i,j) when A is sparse.
View all files

Be the first to rate this file! 3 Downloads (last 30 days) File Size: 2.08 KB File ID: #22720

subsref2: often faster than subsref for C=A(i,j) when A is sparse

19 Jan 2009

subsref2 is a replacement for subsref, performing the computation C=A(i,j).

File Information
Description	subsref2 uses sparse matrix multiplication to compute C=A(i,j). It uses the following method. Let I and J be identity matrices of the right size so that IAJ is equal to A. Then C = I(i,:)AJ(:,j) is the same as C=A(i,j).
MATLAB release	MATLAB 7.7 (R2008b)

Please login to add a comment or rating.