CL_dMult

Description

• Multiplies matrices (or hypermatrices) elementswise (extends ".*").

  The matrices (or hypermatrices) are first expanded so that if the size in one dimension is 1, the values are duplicated to match the maximum size between the 2 matrices (or hypermatrices) in that dimension.

  If A or B is [], the result is [].

• Notes:

  - The function works for matrices or hypermatrices of any size.

Parameters

A:

Matrix or hypermatrix (NxPx... or 1xPx... or Nx1x... etc...)

B:

Matrix or hypermatrix (NxPx... or 1xPx... or Nx1x... etc...)

C:

Result (NxPx...)

Authors

• CNES - DCT/SB

See also

• CL_dot

Examples

M = [1, 2, 3; 4, 5, 6; 7, 8, 9]; f = [1; 2; 3]; // Multiply rows of M by factors in f CL_dMult(f, M) // => same as [f(1)*M(1,:); f(2)*M(2,:); f(3)*M(3,:)] // Multiply columns of M by factors in f CL_dMult(f', M) // => same as [f(1)*M(:,1), f(2)*M(:,2), f(3)*M(:,3)] // Other cases with matrices or vectors CL_dMult(M, f) // => same as CL_dMult(f, M) CL_dMult(f, f') // => same as f * f' CL_dMult(f', f) // => same as CL_dMult(f, f') // Other cases with hypermatrices CL_dMult(f, ones(3,2,4)) // => same as repmat(f, [1,2,4]) CL_dMult(M, ones(3,3,4)) // => same as repmat(M, [1,1,4])