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how to find y axis value's opposite x axis value

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for ex:x=1,2,3,4,5,6;y=2,7,8,9,4,1 i want pick up the y axis (9) opposite x axis value

Accepted Answer

KL on 29 Apr 2015
If both vectors are of same size, find the index of your variable from y and use it to pick the value at that position in x. A simple example is
x = [1 2 3 4];
y = [5 6 7 8];
ind = find(y==7);
Stephen23 on 29 Apr 2015
Edited: Stephen23 on 29 Apr 2015
Using logical indexing (as per Ilham Hardy's answer) is simpler and faster than using find.

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More Answers (1)

Ilham Hardy
Ilham Hardy on 29 Apr 2015
>> x=[1,2,3,4,5,6];
>> y=[2,7,8,9,4,1];
>> opp_x = x(y==9)
opp_x =


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