GeoGridVector
GeoGridVector[loc->{vx,vy},proj] represents a horizontal two-dimensional vector of components vx, vy in the orthonormal frame of the coordinates of the geo projection proj, at geo location loc.
GeoGridVector[loc->{vx,vy,vz},proj] represents a three-dimensional vector of horizontal components vx, vy and vertical component vz at geo location loc.
GeoGridVector[{loc1,loc2,…}->{vec1,vec2,…},proj] represents a collection of vectors veci at respective geo locations loci.
GeoGridVector[{loc1->vec1,loc2->vec2,…},proj] represents the same collection of vectors.
GeoGridVector[vec,proj] represents a geo vector whose associated location has been implicitly specified.
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