select parts of vector with loops

So I know this is basic matlab stuff but I don't get it right now. lets say i have vector Y, now i want to remove values below a certain vallue from the first ten data points the second ten data points etc. I have to put in a loop so I can add more functions to it. What i mean is select from Y point 1:10,11:20,21:30 etc and do it with a loop.

Can someone help?

[Stephen23]

@ Kjell Lemmen: it is not very clear what you are trying to do. Please show us an example, complete with both input and output vectors.

Answer 1

[Nicolas Schmit]

Y = rand(100, 3);
d = 10;
for k=1:size(Y, 1)/d
    % Select a chunk of data from Y
    index = d*(k-1)+1:d*k;
    Ytemp = Y(index, :);    

    % Do what you want to Ytemp   

    % Put the data back in Y
    Y(index, :) = Ytemp;
end