How to swap cells in matrix with code

I have to change the value of every cell in a matrix which is >5. However I am not sure how. I have to include the 'find' function. I have to change every value greater than 5 to 0, I am not sure how.

D=[8 1 6;3 5 7;4 9 2];
[d1,d2]=find(D>5);
d=[d1,d2];
disp(d)

Doing this gives me

>> PBTask4p3
     1     1
     3     2
     1     3
     2     3

[Ameer Hamza]

"include the 'find' function". Is this a homework problem? What is the expected output?

[Allen Antony]

D=[0 1 0;3 5 0;4 0 2]

So basically every number greater than 5 becomes 0. yes this is a homework problem

[Mohammad Sami]

You should look at logical indexing. For your problem you can use find, however it's not necessary.

[Allen Antony]

I will look at it, but I do kind of need find for the task.

[KSSV]

Read about logical indexing.

A = rand(5) ; 
idx = A>0.5 ; % logical indexing 
A(idx) = 0 ; 

https://in.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html

Answer 1

[Ameer Hamza]

Check this

D = [8 1 6;3 5 7;4 9 2];
idx = find(D > 5);
D(idx) = 0;

Result

>> D
D =
     0     1     0
     3     5     0
     4     0     2