Package uk.ac.rdg.resc.edal.grid.cdm

Class CdmTransformedGrid

java.lang.Object

uk.ac.rdg.resc.edal.grid.AbstractTransformedGrid

uk.ac.rdg.resc.edal.grid.cdm.CdmTransformedGrid

All Implemented Interfaces:

Serializable, DiscreteDomain<HorizontalPosition,GridCell2D>, DiscreteHorizontalDomain<GridCell2D>, Domain<HorizontalPosition>, HorizontalDomain, HorizontalGrid

public class CdmTransformedGrid
extends AbstractTransformedGrid

A two-dimensional HorizontalGrid that uses a Projection to convert from lat-lon coordinates to grid coordinates.

Author:

Jon Blower, Guy Griffiths

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
CdmTransformedGrid(ucar.nc2.dt.GridCoordSystem coordSys)
CdmTransformedGrid(ucar.unidata.geoloc.ProjectionImpl proj, ReferenceableAxis<Double> xAxis, ReferenceableAxis<Double> yAxis)	Create a new CdmTransformedGrid from a defined ProjectionImpl and a pair of axes

Method Summary

Modifier and Type	Method	Description
boolean	contains(HorizontalPosition position)
boolean	equals(Object obj)
GridCoordinates2D	findIndexOf(HorizontalPosition position)	Finds the index of the specified position within this domain
BoundingBox	getBoundingBox()	Returns the bounding box of the domain in the domain's own coordinate reference system.
Array2D<GridCell2D>	getDomainObjects()	Returns an Array of domain objects that comprise this domain.
org.opengis.metadata.extent.GeographicBoundingBox	getGeographicBoundingBox()	Returns the bounding box of the domain in WGS84 latitude-longitude coordinates.
int	getXSize()
int	getYSize()
int	hashCode()
long	size()	Returns the size of this domain.
double	transformNativeHeadingToWgs84(double xComp, double yComp, double lon, double lat)	Transforms a heading in native grid co-ordinates (degrees clockwise from positive y-direction) into a heading in WGS84 (degrees clockwise from north).

Methods inherited from class uk.ac.rdg.resc.edal.grid.AbstractTransformedGrid

getCoordinateReferenceSystem

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CdmTransformedGrid

public CdmTransformedGrid(ucar.unidata.geoloc.ProjectionImpl proj,
                          ReferenceableAxis<Double> xAxis,
                          ReferenceableAxis<Double> yAxis)

Create a new CdmTransformedGrid from a defined ProjectionImpl and a pair of axes

Parameters:

proj - The ProjectionImpl which defines the transforms to and from lat-lon

xAxis - The x ReferenceableAxis of the non-lat-lon grid

yAxis - The y ReferenceableAxis of the non-lat-lon grid

CdmTransformedGrid

public CdmTransformedGrid(ucar.nc2.dt.GridCoordSystem coordSys)

Parameters:

coordSys - This GridCoordSystem must have one-dimensional x and y coordinate axes

Method Detail

contains

public boolean contains(HorizontalPosition position)

Returns:

true if the given position is contained within this domain.

getBoundingBox

public BoundingBox getBoundingBox()

Description copied from interface: HorizontalDomain

Returns the bounding box of the domain in the domain's own coordinate reference system. For domains which do not have a native co-ordinate reference system this may return a BoundingBox in a different CRS. Consequently this BoundingBox is not guaranteed to be a tight bound around the domain.

getGeographicBoundingBox

public org.opengis.metadata.extent.GeographicBoundingBox getGeographicBoundingBox()

Description copied from interface: HorizontalDomain

Returns the bounding box of the domain in WGS84 latitude-longitude coordinates.

size

public long size()

Description copied from interface: HorizontalGrid

Returns the size of this domain. Equivalent to getXSize() * getYSize()

getDomainObjects

public Array2D<GridCell2D> getDomainObjects()

Description copied from interface: DiscreteDomain

Returns an Array of domain objects that comprise this domain.

findIndexOf

public GridCoordinates2D findIndexOf(HorizontalPosition position)

Description copied from interface: HorizontalGrid

Finds the index of the specified position within this domain

Parameters:

position - The position to find the index of

Returns:

A GridCoordinates2D object representing the index of the position within the domain, or null if the position is outside the domain.

transformNativeHeadingToWgs84

public double transformNativeHeadingToWgs84(double xComp,
                                            double yComp,
                                            double lon,
                                            double lat)

Description copied from class: AbstractTransformedGrid

Transforms a heading in native grid co-ordinates (degrees clockwise from positive y-direction) into a heading in WGS84 (degrees clockwise from north).

Specified by:

transformNativeHeadingToWgs84 in class AbstractTransformedGrid

Parameters:

xComp - The x-component of the heading

yComp - The y-component of the heading

lon - The longitude of the given components

lat - The latitude of the given components

Returns:

The transformed heading

getXSize

public int getXSize()

Returns:

The size of the x-axis

getYSize

public int getYSize()

Returns:

The size of the y-axis

hashCode

public int hashCode()

Specified by:

hashCode in interface HorizontalGrid

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Specified by:

equals in interface HorizontalGrid

Overrides:

equals in class Object