find a value in a matrix

10 views (last 30 days)
fede
fede on 23 Sep 2015
Commented: Mario Bocanegra on 4 Sep 2021
For example I have the following cell
x1 x2 x3
x1 2 3 4
x2 5 -2 -5
x3 -6 -5 -4
I want to search all variable of matrix > -2, and as output : x1, x2 for example. In my case :
INPUT:find(matrix>-2),
OTUPUT:
X1 X1
X1 X2
X2 X1
X1 X3

Accepted Answer

Nobel Mondal
Nobel Mondal on 23 Sep 2015
I wasn't sure if you want the actual output in terms of 'x*' or the corresponding index.
>> inputMat = [2 3 4; 5 -2 -5; -6 -5 -4];
>> [myRow, myCol] = find(inputMat > -2);
>> numericalAns = [myRow myCol];
>> indexNames = {'x1' 'x2' 'x3'};
>> cellFormAns = [indexNames(myRow)' indexNames(myCol)'];
  5 Comments
Nobel Mondal
Nobel Mondal on 23 Sep 2015
Edited: Nobel Mondal on 23 Sep 2015
Is this what you're looking for?
>> matchValues = inputMat(inputMat > -2);
Mario Bocanegra
Mario Bocanegra on 4 Sep 2021
This worked! Thank you!

Sign in to comment.

More Answers (0)

Categories

Find more on Resizing and Reshaping Matrices in Help Center and File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!