ntimes

Multiplies arrays of 2D matrices in an efficient manner.

Version 1.1.0.0 (1.53 KB)
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9 Sep 2013

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Given 2 3D arrays, A and B, where A(:,:,i) and B(:,:,i) are i 2D matrices, multiply A(:,:,i)*B(:,:,i) without the use of a for loop.

More an experiment in coding than a practically useful piece of code, the goal was to derive an efficient method for multiplying many matrices together without the use of computationally expensive for loops.

Some applications include optical flow algorithms and image processing.

Created by a colleague, Ampere Kui.

Cite As

Michael Stachowsky (2026). ntimes (https://www.mathworks.com/matlabcentral/fileexchange/25346-ntimes), MATLAB Central File Exchange. Retrieved .

Categories

Find more on Creating and Concatenating Matrices in Help Center and MATLAB Answers

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
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Version Published Release Notes
1.1.0.0

Changed the file name so that it conforms to MATLAB standards.
1.0.0.0