How to get data based on first and second column

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Muhammad Uswah Pawara 2018-11-25

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https://ww2.mathworks.cn/matlabcentral/answers/431794-how-to-get-data-based-on-first-and-second-column

评论： dpb 2018-11-26

Hallo, I have matrix (793576x3) that consist of x,y,z, which are x = longitude and y = latitude and z = depth.

I want to get z data only for coordinate x,y (92,8.25),(92.5,8.0).., and so on that means +0.25 for x coordinate and -25 for y coordinate. so the results should be

x y z

92 8.25 -

92.25 8.0 -

92.50 7.75 -

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Answer 1

dpb 2018-11-25

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https://ww2.mathworks.cn/matlabcentral/answers/431794-how-to-get-data-based-on-first-and-second-column#answer_348767

编辑：dpb 2018-11-26

在 MATLAB Online 中打开

mxx=max(A(:,1));                     % max X coordinate in array
ix=ismember(A(:,1),[92:0.025:mxx]);  % locations in A of desired values
B=A(ix,:):                           % those elements of A