How do I measure mean of every 10 data of a vector size 1x1500?

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Klara
Klara 2014-5-29
回答： Jos (10584) 2014-5-29
I have a vector of size 1x1500, whose every 10 values, are of one person (i.e, there are 150 persons).
I should estimate the mean of those 10 values for each person. my script is not working well, any idea?

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采纳的回答

David Sanchez
David Sanchez 2014-5-29
A = rand(1,1500); % your data
M = zeros(1,150); % MEAN MATRIX
for k=1:150
M(k) = mean(A(((k-1)*10+k):10*k));
end

更多回答（2 个）

Jan de Wilde
Jan de Wilde 2014-5-29
Avoiding loops , try:
A = rand(1,1500); % your data
M = mean( reshape( A, 10, 150 ) );
Jos (10584)
Jos (10584) 2014-5-29
% DATA
A = rand(1,1500) ;
N = 10 ;
% ENGINE
M = accumarray((floor((0:numel(A)-1)/N)+1).',A(:),[],@mean) ;
% CHECK
k = 17 ;
isequal(M(k),mean(A(((k-1)*N)+(1:10))))

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