sharing values of elements in a matrix

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JL 2019-8-8

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https://ww2.mathworks.cn/matlabcentral/answers/475460-sharing-values-of-elements-in-a-matrix

评论： darova 2019-8-9

Sharing element values within matrix whiles referencing from another matrix.pdf

Hi All, I've attached my questions for your reference - It was hard to paste here.

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JL 2019-8-9

Hi Darova, I derived

W = Z= Y=

[0; [0.4696; [1 2 0 0;

0; 0.3841; 1 3 2 0;

0; 0.3672; 1 4 3 2;

28; 0.4317; 1 3 0 0;

0; 0.4049; 1 2 3 0;

0; 0.4049; 1 4 3 0;

25; 0.4696; 1 4 0 0;

0; 0.3841; 1 3 4 0;

0; 0.3672; 1 2 3 4;

25; 0.4696; 2 3 0 0;

0; 0.3841; 2 1 3 0;

0; 0.3672; 2 1 4 3;

15; 0.4049; 2 1 4 0;

14; 0.4049; 2 3 4 0;

0; 0.3530; 2 1 3 4;

0; 0.3530; 2 3 1 4;

25; 0.4696; 3 4 0 0;

0; 0.3841; 3 1 4 0;

0;] 0.3672;] 3 2 1 4;]

Using Y as a reference where to put the product values of W*Z into initial X:

X =

[0 0*0.4696=0 28*0.4317=12.09 25*0.4696=11.74;

0*0.4696=0 0 25*0.4696=11.74 15*0.4049+14*0.4049=11.74;

28*0.4317=12.09 25*0.4696=11.74 0 25*0.4696=11.74;

25*0.4696=11.74 15*0.4049+14*0.4049=11.74 25*0.4696=11.74 0;];

hence, initial X is:

X =

[ 0 0 12.09 11.74;

0 0 11.74 11.74;

12.09 11.74 0 11.74;

11.74 11.74 11.74 0;]

Stephen23 2019-8-9

编辑：Stephen23 2019-8-9

在 MATLAB Online 中打开

JL's incorrectly posted "Answer" moved here and formatted correctly:

Hi Darova, what I did was first multiplied W.*Z to get X0

Then I used this code from star strider

for k = 1:size(Y,1)
[~,Zc] = find(Y(k,:) ~= 0, 1, 'last');              % Last Non-Zero Column
Z2(k,:) = Y(k,Zc);                                        % Element Of Last Non-Zero Column
end
Z = accumarray([Z2 Y(:,1)], X0)
Z1 = [Z, zeros(size(Z,1),1 )]; 
Z2 = [Z.'; zeros(1,size(Z,1 ))]; 
Znew = Z1 + Z2 

With this code, I get

X = 
[ 0         0          12.09       11.74;
  0         0          11.74       11.74;
  12.09    11.74        0          11.74;
  11.74    11.74       11.74        0;]