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scripts default iconfrontal (Scripts) Publisher's description

These routines assist in the manipulation of matrices with same shape but different content

These routines assist in the manipulation of matrices with same shape but different content. For example, performing the product A*b is trivial for matrix A and vector b, but what would you do if you had several such products to form? Examples abound: rotations, Jacobians, covariances, etc. Using the frontal routines, you'd collect them all in a three-dimensional matrix or third-order tensor, with each k-th frontal panel of A(:,:,k) and b(:,:,k) storing one such a related matrix and vector. Then calling

C = frontal_mtimes(A, b);

would do the equivalent of

for k=1:size(A,3), C(:,:,k) = A(:,:,k) * b(:,:,k); end

but using internally different algorithms depending on the dimensions of A (including a C-mex option). If you like operator overloading, you can do instead:

A = frontal(A);
b = frontal(b);
C = A*b;

You might want to compile the file frontal_mtimes_helper.c, but it's not required.

After you've unzipped it, test your installation running:


(don't do addpath(genpath('c:workfxfrontalfrontal')))

System Requirements:

MATLAB 7.9 (2009b)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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