Average of matrix element

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Supriya Gain
Supriya Gain 2019-8-8
评论： Jos (10584) 2019-8-8
Suppose i have a 4X1 matrix like [a;b;c;d]. Now i want the output as [a;(a+b)/2;(a+b+c)/3;(a+b+c+d)/4].
How to do that?

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采纳的回答

Walter Roberson
Walter Roberson 2019-8-8
x = [a;b;c;d];
cumsum(x) ./ (1:numel(x))

更多回答（3 个）

Adam
Adam 2019-8-8
cumsum( [a; b; c; d] ) ./ ( 1:4 )';
madhan ravi
madhan ravi 2019-8-8
cumsum(matrix)./(1:numel(matrix)) % where matrix is a column vector
Jos (10584)
Jos (10584) 2019-8-8
One easy option
A = [10 20 30 40]
B = cumsum(A) ./ (1:numel(A))

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