extract data according to specified lat,lon bounding box

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swetha S
swetha S 2019-6-26
评论： swetha S 2019-6-26
i have a 3d data, say dat(33*35*122). (lat,lon,time). Lat[6.5n to 38.5n], lon[66.5e to 100.5e]. now how can i extract the data for Lat[24.5n to 29.5] , lon[73.5e to 75.5e]. the data is of 1x1 degree resolution.
  2 个评论
Bob Thompson
Bob Thompson 2019-6-26
What do you mean by 'extract?' Do you just want to capture the data subset somewhere else? You can just use indexing for that. Things are a bit more complicated because you want to cover a range, but we can do that easily with logic.
Lat = 6.5:38.5;
Lon = 66.5:100.5;
latrng = ismember(Lat,[24.5:29.5]);
lonrng = ismember(Lon,[73.5:75.5]);
subset = data(latrng,lonrng,:);

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回答（1 个）

KSSV
KSSV 2019-6-26
REad about interp2. Let X,Y,Z be your original data. And let Xi, Yi be your new grid.
Zi = interp2(X,Y,Z,Xi,Yi) ;

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