Question

So I have 2d matrix and I want to extract every fifth value from the second column.

I know how to get all the values from the second column –

var = myMatrix(:,2);

But how can I only select every fifth value instead of all the values

Answer 1

Depending on exactly what “every fifth value” means, I think that what you want is:

var = myMatrix(5:5:end, 2);

which returns

var = [myMatrix(5,2); myMatrix(10,2); ...]