minimum point in nested for loop and using min function..i want to know the value of x for which every row of y has minimum elements please help

Question

Odette 2024-4-8

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2104496-minimum-point-in-nested-for-loop-and-using-min-function-i-want-to-know-the-value-of-x-for-which-eve

评论： Voss 2024-4-9

clear;clc;close;
u1=1:1:3;
u2=0:0.1:1.1;
for jj=1:length(u1)
   s1=inf;
    for kk=1:length(u2)
        
   
       x(jj,kk)=u1(jj)+u2(kk);
       y=abs(x.^2-2);
      z=min(y,[],2);
     
 
    end
end

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Answer 1

Voss 2024-4-8

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https://ww2.mathworks.cn/matlabcentral/answers/2104496-minimum-point-in-nested-for-loop-and-using-min-function-i-want-to-know-the-value-of-x-for-which-eve#answer_1438401

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clear;clc;close;
u1=1:1:3;
u2=0:0.1:1.1;
for jj=1:length(u1)
    % s1=inf;
    for kk=1:length(u2)
        x(jj,kk)=u1(jj)+u2(kk);
    end
end
x
x = 3x12
    1.0000    1.1000    1.2000    1.3000    1.4000    1.5000    1.6000    1.7000    1.8000    1.9000    2.0000    2.1000
    2.0000    2.1000    2.2000    2.3000    2.4000    2.5000    2.6000    2.7000    2.8000    2.9000    3.0000    3.1000
    3.0000    3.1000    3.2000    3.3000    3.4000    3.5000    3.6000    3.7000    3.8000    3.9000    4.0000    4.1000
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% simpler than nested loops:
x = u1.'+u2
x = 3x12
    1.0000    1.1000    1.2000    1.3000    1.4000    1.5000    1.6000    1.7000    1.8000    1.9000    2.0000    2.1000
    2.0000    2.1000    2.2000    2.3000    2.4000    2.5000    2.6000    2.7000    2.8000    2.9000    3.0000    3.1000
    3.0000    3.1000    3.2000    3.3000    3.4000    3.5000    3.6000    3.7000    3.8000    3.9000    4.0000    4.1000
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y=abs(x.^2-2);
[z,c]=min(y,[],2);
r = 1:numel(z);
idx = sub2ind(size(x),r,c.');
x_min = x(idx)
x_min = 1x3
    1.4000    2.0000    3.0000
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