I would like to remove zeros from my matrix

a=[0 0 0; 0 0 0; 1 2 3; 4 5 6]

[Rik]

What have you tried so far?

[LeoAiE]

a=[0 0 0; 0 0 0; 1 2 3; 4 5 6]

a = 4×3

0 0 0 0 0 0 1 2 3 4 5 6

a(a>0) % the results would be a column vector 

ans = 6×1

1 4 2 5 3 6

% Or try to remove the row or the columns with zeros
a(1:2,:) = [] 

a = 2×3

1 2 3 4 5 6

a

a = 2×3

1 2 3 4 5 6

[Rik]

@Aladdin, this is an answer to what might be a homework question. Please consider either moving your comment to the answer section (by deleting this and reposting it) or deleting your comment.

Answer 1

[Walter Roberson]

a = [0 0 0; 0 0 0; 1 2 3; 4 5 6]

a = 4×3

0 0 0 0 0 0 1 2 3 4 5 6

b = rmmissing(standardizeMissing(a, 0))

b = 2×3

1 2 3 4 5 6