Interpolate data around a point

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.

Answer 1

[Matt J]

interp2(lat,long,P,____)

[Emrys]

Dear Matt J, thank you very much for the answer, what do you mean with this ? ---> __) Sorry if I ask

[Matt J]

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]

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]

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]

Thank you very much. It works.