Interpolate data around a point

2018 7 8
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更新时间：2018 7 9
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Hy guys , I have a matrix of data on a grid. P=45*25 matrix lat=45*25 matrix long=45*25 matrix and I want to interpolate this data around a point inside the grid. Someone could help me plese? Thank you very much in advance.

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Matt J
Matt J 2018-7-8

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interp2(lat,long,P,____)

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Emrys
Emrys 2018-7-8
Dear Matt J, thank you very much for the answer, what do you mean with this ? ---> __) Sorry if I ask
Matt J
Matt J 2018-7-8
编辑：Matt J 2018-7-8
There are additional arguments needed to tell interp2 at what point you wish to interpolate P.
https://www.mathworks.com/help/matlab/ref/interp2.html
Emrys
Emrys 2018-7-8
Yes, I got it. My problem was understanding which kind of arguments I have to pass. Xq and Yq contain the coordinates of the query points. What I expect from interp2 is a unique value from the matrix. And I cannot understand how to tell him to do it. Imagine that I have a point (long,lat) around around which i want to interpolate all the matrix data. How could I tell to interp2 this?
Matt J
Matt J 2018-7-8
编辑：Matt J 2018-7-8
Imagine that I have a point (long,lat) around around which i want to interpolate all the matrix data. How could I tell to interp2 this?
(Xq,Yq) would be that point.
Emrys
Emrys 2018-7-9
Thank you very much. It works.

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