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Determine if a point is over land or water

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Mike D.
Mike D. on 21 Aug 2021
Commented: KSSV on 24 Aug 2021
Given a point (latitude, longitude), is there a function or easy way to determine if the point is over land or over water?
I could download coastline data from NOAA and determine if a point falls inside a polygon, but I'd rather not develop an algorithm myself if it already exists.
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KSSV
KSSV on 21 Aug 2021
For a given lon, lat; use interp2 and get the elevation/ bathymetry value, if the value is negative it is depth and lies in the ocean or water and if the value is positive it lies in the land.
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Mike D.
Mike D. on 24 Aug 2021
Yes, I can see that both ncdisp and ncinfo tell me all about the structure, what I wanted was the few lines of code that allow me to read the binary file into Matlab variables.

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