How to use interpolation?

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민준 배
민준 배 2022-11-6
评论： KSSV 2022-11-6
I have longitude, latitude, the veolocity of sea surface and a buoy velocity
I want to know the relationship between sea surface velocity and buoy velocity
so i want to interpolate the velocity of sea surface using interp2
in this case how do i make the function?
  2 个评论
KSSV
KSSV 2022-11-6
Is your sea surface velocity a 3D data?

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回答（1 个）

KSSV
KSSV 2022-11-6
Let lon,lat,U be your 2D data, and x,y,u be your buoy data.
Ui = interp2(lon,lat,U,x,y) ;
If your data is #d (I hope it is), then run loop for each time step.
Other option is; get the index of nearest neightbour of (x,y) in (lon,lat) and extract U for this index.
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민준 배
민준 배 2022-11-6
lon and lat data is 1440*720 single and the U data is 1440*720 double
KSSV
KSSV 2022-11-6
Read about scatteredInterpolant or attach your data.

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