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How to find vector in array of vectors with the highest value of one component?

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Michael Boyte 2023-4-18

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https://ww2.mathworks.cn/matlabcentral/answers/1949363-how-to-find-vector-in-array-of-vectors-with-the-highest-value-of-one-component

评论： Michael Boyte 2023-4-19

采纳的回答： Matt J

I feel like there's an easy solution to this that I'm missing. I have an array of points, p(x,y,z,i), in which the first three components, x, y, and z, are a point in 3d space and the last component, i, is the number assigned to that point. I want to search through the array and find the vector with the highest y-value. How can I do this?

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Matt J 2023-4-18

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编辑：Matt J 2023-4-18

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If I assume that p is an Nx4 array, then,

[~,row]=max(p(:,2));
 result=p(row,1:3)

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Torsten 2023-4-19

编辑：Torsten 2023-4-19

Apply fliplr or flipud to the vector and use max after this operation.

Or use the solution described here:

https://de.mathworks.com/matlabcentral/answers/107735-find-the-last-position-of-maximum-value-in-a-matrix

Michael Boyte 2023-4-19

That did it. Thanks!

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MATLAB Language Fundamentals Matrices and Arrays

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