finding and changing values in matrix that satisfies 2 conditions

2 Ansichten (letzte 30 Tage)
Hi there, I am new in matlab and try to solve this problem for couple of hours, I have vector which contains various triggers and a lot of zeros:
what I need to do is to find the second value in matrix A which is bigger than 0 and change it to 100. In this case it is the 12th number, value "1", let's say it is target_1. Then I need to change every second number bigger then 0 and change it to 100, but we have to start counting from target_1.
So the final matrix will be like this:
Thank you very much ahead for your time and help.

Akzeptierte Antwort

Adam am 8 Feb. 2017
Bearbeitet: Adam am 8 Feb. 2017
idx = find( A > 0 );
idx = idx(2:2:end);
B = A
B(idx) = 100;

Weitere Antworten (1)

Alexandra Harkai
Alexandra Harkai am 8 Feb. 2017
Bearbeitet: Alexandra Harkai am 8 Feb. 2017
idx = find(A); % find indices of nonzero elements in A
B = A; % initially set B to be same as A
B(idx(2:2:end)) = 100;


Mehr zu Graphics Object Programming finden Sie in Help Center und File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by