Enlarge vector by putting average of surrounding numbers in between of every number of original vector

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Jorge Montane 2018-1-17

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编辑： Stephen23 2018-1-17

How to make a longer vector by adding an additional element between neighboring elements in the original vector. Each new element should equal the average of its neighboring elements. x = [0 2 3 2 1 -1]

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Jorge Montane 2018-1-17

my original vector is x = [0 2 3 2 1 -1]. And at the end I would need to see is x= [0 1 2 2.5 3 2.5 2 1.5 1 0 -1].

Birdman 2018-1-17

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Birdman 2018-1-17

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在 MATLAB Online 中打开

x(3:2:2*numel(x)-1)=x(2:end);
for i=2:2:numel(x)-1
x(i)=(x(i-1)+x(i+1))/2
end

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Stephen23 2018-1-17

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编辑：Stephen23 2018-1-17

在 MATLAB Online 中打开

Without a loop:

>> x = [0 2 3 2 1 -1];
>> y = [x;mean([x(1:end-1);x(2:end)]),0];
>> y = y(1:end-1)
y =
   0.00000   1.00000   2.00000   2.50000   3.00000   2.50000   2.00000   1.50000   1.00000   0.00000  -1.00000