Find minimum and create a new matrix
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David du Preez
el 12 de Abr. de 2017
Respondida: Andrei Bobrov
el 12 de Abr. de 2017
I have a 242x14 matrix. I want to look at the first 22 lines and find the minimum value in column 10. Then I want to create a new matrix including all the columns before the minimum value and a second new matrix containing the minimum value and all the values after it.
I also want to repeat this for the remaining part of the matrix. So in other words I will have two 121x14 matrices.
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KSSV
el 12 de Abr. de 2017
You want to find minimum value for every 22 rows and them split the matrix, is it?
Respuesta aceptada
Andrei Bobrov
el 12 de Abr. de 2017
m = size(test_1,1);
i0 = (0:22:m-1)';
ii = ceil((1:m)'/22);
T = test_1(:,10);
T(T == 0) = inf;
idx_min = accumarray(ii,T,[],@(x)find(min(x) == x)) + i0;
ind = zeros(m,1);
ind([idx_min;i0+1]) = 1;
ind = cumsum(ind);
t = rem(ind,2) ~= 0;
Result{1} = test_1(t,:);
Result{2} = test_1(~t,:);
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