in matlab delete an entire row if the elements in certain columns equal zero

Question

I matlab I have a matrix of 4 columns. I want to delete an entire row if the elements in columns two, three and four all equal zero.

So, I think I need to do something l

Answer 1

You can use logical indexing + any

data = data(any(data(:,2:4),2),:);

Here instead of deleting rows we preserve a row if the conditions is not satisfied for it.