Spatial operations

• Validation: function for determining coordinate validity after a change SRF operation.
  • valid when the coordinate falls within the valid region specification for that SRF;
  • extended valid when the coordinate falls outside of the valid region specification for that SRF, but falls within the extended valid region specification for that SRF;
  • defined when the coordinate falls within the domain of the CS specified for that SRF; and
  • invalid when the coordinate falls outside of the CS domain of the SRF Class of that SRF Class instance.

• Example UTM
  • Valid region: ?3? of UTM zone central meridian.
  • Extended valid region: ?6? of UTM zone central meridian.

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