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How do I create a vector of the average of consecutive elements of another vector (without using a loop)?

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Rinu
Rinu 2013-10-10
评论： Sk Rafidul 2019-5-11
Say, I have a vector A=[2 4 6 8 10]. Is there any way I can create a vector of the average of consecutive elements of A, i.e. B=[3 5 7 9] without using a loop? Is there any matlab function to do that? Thanks in advance.

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-10-10
编辑：Azzi Abdelmalek 2013-10-10
A=[2 4 6 8 10]
B=mean([A(1:end-1);A(2:end)])

更多回答（2 个）

Jan
Jan 2013-10-10
编辑：Jan 2013-10-10
This is simpler and occupies less temporary memory than Azzi's approach:
A = [2 4 6 8 10];
B = 0.5 * (A(1:end-1) + A(2:end))
Matthew Crema
Matthew Crema 2013-10-10
One way:
A=[2 4 6 8 10];
foo = conv([1 1], A)/2;
B = foo(2:end-1)
B =
3 5 7 9
-Matt
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