how can i declare an array

i have to calculate then moving average of a filter so that i need the function y(t) to be an array

[Azzi Abdelmalek]

What function? your question is not clear

Answer 1

[Image Analyst]

Try conv(), filter() or rsmooth()

% Filter array t with a moving average of window width windowWidth.
% Smoothed, averaged array movingAverage is the same length as input array t.
function movingAverage = y(t, windowWidth)
if windowWidth < 1
    windowWidth = 1;
end
if windowWidth > length(t);
    windowWidth = length(t);
end
movingAverage = conv(t, ones(1, windowWidth), 'same');