findfirst

Version 1.1.0.0 (2.33 KB) by Richard Hindmarsh
MEX file for finding first or last non-zero.
4.0
(1)
1.6K Downloads
Updated 18 Jun 2009

View License

[VALUE,INDEX] = FINDFIRST(A,SEARCHDIR)
Returns the value and optionally index of the first non-zero in A.
A must be full and double
If SEARCHDIR = 'first' (default) the search is from the first index
If SEARCHDIR = 'last', the search is backwards from the last index

This is a cmex file, and is an order of magnitude faster than using FIND, and two orders of magnitude faster than using MATLAB loops.

Tested on Windows NT/2000 VC 6.0, Linux (gcc 2.95) and Solaris (courtesy A Pearson)

Cite As

Richard Hindmarsh (2024). findfirst (https://www.mathworks.com/matlabcentral/fileexchange/2631-findfirst), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R13
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
Find more on MATLAB Compiler 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
1.1.0.0

Changed to BSD license
1.0.0.0