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GeoLatte / geolatte-geom

A geometry model that conforms to the OGC Simple Features for SQL specification.
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Custom VerticalCoordinateReferenceSystem not possible #37

Closed michikommader closed 4 years ago

michikommader commented 8 years ago

Two things regarding VerticalCoordinateReferenceSystems

  1. The constructor of a org.geolatte.geom.crs.VerticalCoordinateReferenceSystem is protected. How to manually construct such a system?
  2. What does the datumtype of a org.geolatte.geom.crs.VerticalDatum refer to? The documentation is missing.
maesenka commented 8 years ago

Currently you can only construct a VerticalCoordinateReferenceSystem with the factory method CoordinateReferenceSystems.mkVertical(LinearUnit)

I'll consider adding other factory methods, or make the constructor public

As for the meaning of VerticalDatum, it is a term used in geodesy to indicate how elevation measurement is to be interpreted (see e.g. https://en.wikipedia.org/wiki/Geodetic_datum#Vertical_datum). It is modeled here as in the OGC specification "OpenGIS Implementation Specification: Coordinate Transformation Services" (rev. 1.00)"