Saving a loop array

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Joshua Welsh 2016-12-16

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https://ww2.mathworks.cn/matlabcentral/answers/317203-saving-a-loop-array

关闭： Joshua Welsh 2018-6-8

I'm trying to save a loop array, each output (BeadC & BeadS) produces a 9x1801 double - I would like to save each iteration so it is 9x1801, 18x1801 etc. Currently it is producing the correct sizes but they are just repeats of the same data. What do I need to edit?

lam =[405 488]; % Wavelength of scatter (nm)
n=length(lam);
for t=1:n
    nx= length(openang_range);       % number of angles to calculate collection for
    ny= length(Bead_SSC(t,:))*length(lam(t)); % length of all beads being calculated
    jj=t*ny;
    kk=jj-(ny);
    b=(zeros(size(Bead_nm)));
    c=length(b(:));
    BeadC = zeros(c,nx);
    BeadS = zeros(c,nx);
      for j=1:ny
          for ii=j:kk:c            
              [BeadC(ii,:), BeadS(ii,:)] = Length1(Bead_nm(t, j), Bead_RI(t, j), lam(t), k0(t), n_wat(t), openang_range); % Collect or Create Predicted Data for Analysed Flow Cytometry Beads
          end
      end
end

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Image Analyst 2016-12-18

Make it easy for us to help you, not hard. That means making it so that we can run your code. Please give us values for the missing variables so we can do that, like John already asked you for.

Joshua Welsh 2016-12-18

编辑：Joshua Welsh 2016-12-18

untitled.m

Sorry, I can't put all of the code in, there are 20 odd scripts. This is the main one.

请先登录，再回答此问题。

Answer 1

Joshua Welsh 2016-12-19

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https://ww2.mathworks.cn/matlabcentral/answers/317203-saving-a-loop-array#answer_247810

在 MATLAB Online 中打开

I have fixed this by flattening the matrix and labelling with my first loop.

lam =[405 488]; % Wavelength of scatter (nm)
n=length(lam);
for t=1:n
    nx= length(openang_range);       % number of angles to calculate collection for
    ny= length(Bead_SSC(t,:))*length(lam(t)); % length of all beads being calculated
    jj=t*ny;
    kk=jj-(ny);
    b=(zeros(size(Bead_nm)));
    c=length(b(:));
    BeadC = zeros(ny,nx);
    BeadS = zeros(ny,nx);
        for j=1:ny                
                [BeadC(ii,:), BeadS(ii,:)] = Length1(Bead_nm(t, j), Bead_RI(t, j), lam(t), k0(t), n_wat(t), openang_range); % Collect or Create Predicted Data for Analysed Flow Cytometry Beads         
        end
BeadC1(t,:)=BeadC(:)' 
BeadS1(t,:)=BeadS(:)'
end

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Answer 2

Jan 2016-12-17

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/317203-saving-a-loop-array#answer_247599

编辑：Jan 2016-12-17

在 MATLAB Online 中打开

The right hand side of the innermost loop does not depend on the loop counter ii:

Length1(Bead_nm(t, j), Bead_RI(t, j), lam(t), k0(t), n_wat(t), openang_range);

Therefore the results must be repeated. I cannot guess where the dependency to ii must be inserted.

Note: Use the more efficient c=numel(b) instead of c=length(b(:)).

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Joshua Welsh 2016-12-18

Thanks for your comment. I understand this is where the problem is, I am trying to save the second loop of t, but currently it is overwriting the first set of results. I'm unsure of how to save the next loop. I assumed it would be adding an inner loop telling the t loop to save the results generated from the j loop further down?