MATLAB Answers

Replace a value if a condition is met

112 views (last 30 days)
Hi, I got a little problem and I hoped someone can help me out.
When I have a matrix consisting of 3 columns, I want to replace a value in the third column if a row in the first column has a certain value. For example, I have the following matrix:
A =
3 6 9
2 6 8
3 6 8
Lets call the first column x, the second y and the third z. Now what I want is that when x == 3, than z must become 20.
How can I do this?

Accepted Answer

Akira Agata
Akira Agata on 25 Nov 2018
Please try the following:
idx = A(:,1) == 3;
A(idx,3) = 20;
  4 Comments
Akira Agata
Akira Agata on 25 Nov 2018
> Image Analyst
Thank you for your comment!

Sign in to comment.

More Answers (0)

Community Treasure Hunt

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

Start Hunting!

Translated by