org.opengis.coverage.grid.quadrilateral
Interface ReferenceableGrid

All Superinterfaces:

GridPositioning

@UML(identifier="CV_ReferenceableGrid",
     specification=ISO_19123)
public interface ReferenceableGrid
extends GridPositioning

A modified copy of ReferenceableGrid which does not inherit Grid.

Method Summary

CoordinateReferenceSystem	getCoordinateReferenceSystem() This inherited association from GridPositioning specifies the coordinate system into which this object transforms coordinates.
GridCoordinates	inverseTransformCoordinates(DirectPosition p) Transforms from a direct position to the grid coordinates of the nearest grid point.
DirectPosition	transformCoordinates(GridCoordinates g) Transforms the specified GridCoordinates to a location in an external CRS.

Methods inherited from interface GridPositioning

getGrid, getInverseOperation, getOperation

Method Detail

getCoordinateReferenceSystem

@UML(identifier="CoordinateReferenceSystem",
     obligation=MANDATORY,
     specification=ISO_19123)
CoordinateReferenceSystem getCoordinateReferenceSystem()

This inherited association from GridPositioning specifies the coordinate system into which this object transforms coordinates. ISO 19123 specifies this association directly on this class.

Specified by:

getCoordinateReferenceSystem in interface GridPositioning

Returns:

The coordinate reference system.

transformCoordinates

@UML(identifier="coordTransform",
     obligation=MANDATORY,
     specification=ISO_19123)
DirectPosition transformCoordinates(GridCoordinates g)

Transforms the specified GridCoordinates to a location in an external CRS. This method may transform the GridCoordinates directly, or may transform the associated sample point.

Parameters:

g - The coordinate to transform.

Returns:

The transformed coordinate.

inverseTransformCoordinates

@UML(identifier="invCoordTransform",
     obligation=MANDATORY,
     specification=ISO_19123)
GridCoordinates inverseTransformCoordinates(DirectPosition p)

Transforms from a direct position to the grid coordinates of the nearest grid point.

Parameters:

p - The coordinate to transform.

Returns:

The transformed coordinate.

TODO:

Question (Wim): GridCoordinates are always integers, how to get the not rounded results?
Martin: The legacy OGC specification defined a "gridToCRS" math transform for that. We may consider to import this element in the proposed set of interfaces.