calculating sum of an array by using if-or statement in matlab

Question

Gokhan Kayan 2018-9-7

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https://ww2.mathworks.cn/matlabcentral/answers/417996-calculating-sum-of-an-array-by-using-if-or-statement-in-matlab

评论： Gokhan Kayan 2018-9-7

Hi, I want to calculate the sum of some array elements in matlab by using if-or statement or by using any other code. My inputs are shown in below.

    Deger      Node1       Node2
      1           2
      2           5
      5           6
      6           7
      7           4
      4           3
      3           2
      3           6

I want to identify same values (max=7) in node1 and node 2 and calculate the sum of Deger values corresponding to that values. For example for 1, we have only 20 for değer. so value=20. For 2, we have 3 values 20,25,33. so the sum is 78. For 3, we have 32,33,34 so value=32+33+34=99. How can I wrote this code in matlab ? Thanks for your help.

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Answer 1

Torsten 2018-9-7

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https://ww2.mathworks.cn/matlabcentral/answers/417996-calculating-sum-of-an-array-by-using-if-or-statement-in-matlab#answer_335850

在 MATLAB Online 中打开

Deger = [20 25 27 28 31 32 33 34];
Node1 = [1 2 5 6 7 4 3 3];
Node2 = [2 5 6 7 4 3 2 6];
minimum = min(min(Node1),min(Node2))
maximum = max(max(Node1),max(Node2))
result = NaN(maximum-minimum+1,1);
for i=minimum:maximum
  result(i+1-minimum) = sum(Deger(find(Node1==i|Node2==i)));
end
result