seasonal average over years

I have monthly averages of daily data for 7 years (84x1). I would like to make an May-October average for the whole period (7x1). I have tried different approaches but I am just getting more confused.

Thank you!

Answer 1

[Image Analyst]

Try this demo:

% Make sample data
temps = randi(100, 84, 1)
% Reshape to a month by year array.
tempsByMonth = reshape(temps, 12,7)
% Extract the May - October months.
mayThroughOct = tempsByMonth(5:10,:)
% Get the means over all those extracted months.
meanMayOct = mean(mayThroughOct(:))

Of course it could be make into a more cryptic, obtuse one liner if you wanted, but I went for understandability.

If you have the Image Processing Toolbox, you have mean2() so it can be shortened to

tempsByMonth = reshape(temps, 12,7) % Reshape to a month by year array.
meanMayOct = mean2(tempsByMonth(5:10,:)) % Get the means over extracted months.

and still be fairly readable.