findsubmat

Version 1.2.0.0 (3.73 KB) by Matt Fig
Finds one matrix (a sub-matrix) within another.
5.0
(8)
3.7K Downloads
Updated 17 Jun 2009

View License

FINDSUBMAT find one matrix (a sub-matrix) inside another.
IDX = FINDSUBMAT(A,B) looks for and returns the linear index of the
location of matrix B within matrix A. The index IDX corresponds to the location of the first element of matrix B within matrix A. Only works for 2-d matrices or vectors, both of which may contain NaNs or Infs.

[R,C] = FINDSUBMAT(A,B) returns the row and column instead.

I would like to extend to N-D but don't have the time right now. This may be a future enhancement, but I believe the file stands on it's own just fine too.

Email me if bugs are found, thanks.

Cite As

Matt Fig (2024). findsubmat (https://www.mathworks.com/matlabcentral/fileexchange/23998-findsubmat), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2007a
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
Find more on Denoising and Compression in Help Center and MATLAB Answers

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Version Published Release Notes
1.2.0.0

Faster engine for larger B matrices.
1.1.0.0

Added ability to deal with NaNs, as suggested by Urs. S.
1.0.0.0