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what is the result?

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diadalina
diadalina 2017-10-24
编辑： KSSV 2017-10-24
X a matrix 2 × n containing the coordinates of n points of the plan. How to obtain a matrix where the points are ordered by ascending order of the x-axis?

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KSSV
KSSV 2017-10-24
编辑：KSSV 2017-10-24
n = 100 ;
X = rand(2,n) ; % some random data
[val,idx] = sort(X(1,:),'ascend') ; % sort x values (first row) in ascending order
X = X(:,idx) ;

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