MATLAB: How to select every 11th element in a vector

loopmatrix manipulationvector manipulation

Hi, I have a column vector M with dimensions 121-by-1. Is there a way to select every 11th element in there to arrive at 11 new 11-by-1 vectors? Or even better, is it possible to collate these vectors after into a matrix of 11-by-11 dimension?

Any help is much appreciated, thank you!

Best Answer

Hi Daniel

You should be able to do that using the 'reshape' function (see its help for further description).

output = reshape(M,11,11);

,,,or maybe output = reshape(in,11,11)';

should do the trick for you.

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Use reshape:

>> V = [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16];
>> M = reshape(V,4,4)
M =
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    2    6   10   14
    3    7   11   15
    4    8   12   16

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Assuming that you have assigned a definite vector of values to th, then:

y = nan(size(th));
mask = th0 < th & th < th1;
y(mask) = umax*exp(1./((th(mask)-th0).*(th(mask)-th1)))/en;

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