Removing specific rows from a matrix where its corresponding element in another column is zero.

Hi All,

I've a matrix abc, I want to remove those columns from it where its corresponding element in third column is zero.

For example , I should be getting the answer as:

ans =[ 1 2 3 ; 4 5 6; 1 5 8; 2 6 9 ; 3 5 9;]

Below is my attempt where I'm getting out of bound error for index position 4 which is obvious as the size is 8 x 3.

abc = [ 1 2 3 ; 4 5 6; 3 4 0 ; 1 5 8; 2 6 9 ; 3 5 9; 2 6 0; 7 7 0;]

sz = size(abc)

row =sz(1)

col = sz(2)

for ii = 1: row

for jj = 1:col

if abc(ii,jj) ==0

abc(:,jj) = [];

jj = jj+1

else

ii = ii+1

end

end

end

Please correct my code.

Thanks in advance!

Answer 1

[Stephan]

ans = abc;
ans(abc(:,3)==0,:) = []