Example 15. Gridding data with large unconstrained regions can cause problems.
There are several techniques that can be used in GMT; this example illustrates
some of them. Lower left panel shows contours of the surface generated with
nearneighbor based on available ship bathymetry. Being a local procedure it will
not extrapolate the surface far away from the control data. surface, on the
other hand (lower right), will. One can deal with this by either imposing a
clip mask based on the data distribution (upper left), or simply overlay
the continents to mask out the unwanted contours.
View GMT script.
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