MATCHROW (v1.1, may 2008)
Editor's Note: This file was a File Exchange Pick of the Week
MATCHROW - match elements in the rows of a matrix
TF = MATCHROW(M,S) returns a column vector containing a logical 1 (true)where the rows of M contain (in any order) all the elements of S and 0 (false) otherwise. M and S can be a cell array of strings.
If a element occurs N times in S, than it has to be present at least N times in these rows of M as well.
Examples:
M = [ 1 2 3 4 5 ; 1 2 2 4 3; 1 3 4 4 3 ; 3 2 4 2 5 ; 1 4 3 2 4 ] ;
Q = matchrow(M,[1 2 4]) % -> [1 ; 1 ; 0 ; 0 ; 1] ;
M(Q,:) % -> 1 2 3 4 5
% 1 2 2 4 3
% 1 4 3 2 4
Q = matchrow(M,[1 2 4 4])
M(Q,:) % -> 1 4 3 2 4
Q = matchrow({'a','X','c','Y'; 'a','X','Y','d' ;
'b','X','d','e'},{'X','Y'}) % -> [1 ; 1 ; 0] ;
A = rand(999,999) ;
x = 27 ;
tic
find(matchrow(A,A(x,:))) == x % -> true!
toc
MATCHROW is vectorized and pretty quick ...
version 1.1, may 2008
Cite As
Jos (10584) (2024). MATCHROW (v1.1, may 2008) (https://www.mathworks.com/matlabcentral/fileexchange/14520-matchrow-v1-1-may-2008), MATLAB Central File Exchange. Retrieved .
MATLAB Release Compatibility
Platform Compatibility
Windows macOS LinuxCategories
Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!Discover Live Editor
Create scripts with code, output, and formatted text in a single executable document.
Version | Published | Release Notes | |
---|---|---|---|
1.0.0.0 | - fixed small error |