Taking only the first element

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Shehab Tarek
Shehab Tarek 2020-5-26
评论： Tommy 2020-5-26
I have matrix =[0,2 ;0,25 ;0,25;0,3] And I am using find function To get the index of every element The error occur when the search value is 0,25 it give an output [2,3] And I want to take only the first element of the output array Or the second element
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Tommy
Tommy 2020-5-26
To get only the nth index:
matrix = [0.2 ;0.25 ;0.25;0.3];
n = 2;
allIdx = find(matrix==0.25,n);
nIdx = allIdx(end);

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