store vectors in matrix over for loop

Question

sita 2013-5-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/75288-store-vectors-in-matrix-over-for-loop

Hi,

 How to store pairvec(in below code) variable in matrix overnested(ix1,ix2) loops. Pls help me in doing this.

Thanks, SIta

clc;
clear;
x1s=rand(3,1)
x2s=rand(3,1)
for ix1=1:3
  for ix2=1:3
      pairvec(:,:,ix1*ix2)= horzcat(x1s(ix1),x2s(ix2))
      temp=pairvec
  end
  %         finalvec=pairvec(ix1*ix2,:)
end

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Answer 1

Andrei Bobrov 2013-5-10

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https://ww2.mathworks.cn/matlabcentral/answers/75288-store-vectors-in-matrix-over-for-loop#answer_85006

编辑：Andrei Bobrov 2013-5-10

在 MATLAB Online 中打开

x1s=(1:3)';
x2s=(10:10:30)';
[ii jj]=ndgrid(x1s,x2s);
overnested = arrayfun(@(x,y)[x y],ii,jj,'un',0);

or

overnested2 = cat(3,ii,jj);

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sita 2013-5-10

Thanks ...it is helpfull

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Answer 2

David Sanchez 2013-5-10

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https://ww2.mathworks.cn/matlabcentral/answers/75288-store-vectors-in-matrix-over-for-loop#answer_85000

Could you be more precise? Did you realize your pairvec is a 3D array, overnested(ix1,ix2) looks like a 2D array. Did you skip the semicolons (';') at the end of each line on purpose?

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sita 2013-5-10

I am trying to store all combinations of x1s and x2s in pairvec here.I realize that is 3D array. Purposefully i skipped semicolons to observe output on command window .

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