visad.data.mcidas
Class GRIDCoordinateSystem

java.lang.Object
  visad.CoordinateSystem
      visad.georef.NavigatedCoordinateSystem
          visad.georef.MapProjection
              visad.data.mcidas.GRIDCoordinateSystem

All Implemented Interfaces:

Serializable

public class GRIDCoordinateSystem
extends MapProjection

GRIDCoordinateSystem is the VisAD CoordinateSystem class for conversions to/from (Latitude, Longitude) and Cartesian (col,row), and with Latitude and Longitude in degrees.

See Also:

Serialized Form

Constructor Summary

GRIDCoordinateSystem(GridDirectory gridDirectory)
create a GRID coordinate system from a GridDirectory

GRIDCoordinateSystem(int[] dirBlock)
create a GRID coordinate system from the GRID's directory block;

Method Summary

boolean	equals(Object obj) Determines whether or not the Object in question is the same as this AREACoordinateSystem.
double[][]	fromReference(double[][] latlon) Converts lat/lon to grid xy (col,row)
Rectangle2D	getDefaultMapArea() Get the bounds for this grid
int[]	getDirBlock() Get the directory block used to initialize this GRIDCoordinateSystem
double[][]	toReference(double[][] rowcol) Converts grid xy (col,row) to latitude/longitude

Methods inherited from class visad.georef.MapProjection

getCenterLatLon, getLatLon, getXIndex, getYIndex, isLatLonOrder, isXYOrder, toString

Methods inherited from class visad.georef.NavigatedCoordinateSystem

getLatitudeIndex, getLongitudeIndex

Methods inherited from class visad.CoordinateSystem

canConvert, fromReference, fromReference, fromReference, getCoordinateSystemUnits, getDimension, getReference, getReferenceUnits, toReference, toReference, toReference, transformCoordinates, transformCoordinates, transformCoordinates, transformCoordinates, transformCoordinatesFreeUnits, transformCoordinatesFreeUnits

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

GRIDCoordinateSystem

public GRIDCoordinateSystem(GridDirectory gridDirectory)
                     throws VisADException

create a GRID coordinate system from a GridDirectory

Parameters:

gridDirectory - directory to use

Throws:

VisADException

GRIDCoordinateSystem

public GRIDCoordinateSystem(int[] dirBlock)
                     throws VisADException

create a GRID coordinate system from the GRID's directory block;

Parameters:

dirBlock - the grid's directory block

Throws:

VisADException

Method Detail

toReference

public double[][] toReference(double[][] rowcol)
                       throws VisADException

Converts grid xy (col,row) to latitude/longitude

Specified by:

toReference in class CoordinateSystem

Parameters:

rowcol - array containing the col/row pairs

Returns:

array containing the corresponding lat/lon pairs

Throws:

VisADException - if input is invalid or there is no nav module

fromReference

public double[][] fromReference(double[][] latlon)
                         throws VisADException

Converts lat/lon to grid xy (col,row)

Specified by:

fromReference in class CoordinateSystem

Parameters:

latlon - array containing the corresponding lat/lon pairs

Returns:

array containing the col/row pairs

Throws:

VisADException - if input is invalid or there is no nav module

getDefaultMapArea

public Rectangle2D getDefaultMapArea()

Get the bounds for this grid

Specified by:

getDefaultMapArea in class MapProjection

Returns:

the bounding box of the MapProjection

getDirBlock

public int[] getDirBlock()

Get the directory block used to initialize this GRIDCoordinateSystem

equals

public boolean equals(Object obj)

Determines whether or not the Object in question is the same as this AREACoordinateSystem. The specified Object is equal to this GRIDCoordinateSystem if it is an instance of GRIDCoordinateSystem and it has the same navigation module and default map area as this one.

Specified by:

equals in class CoordinateSystem

Parameters:

obj - the Object in question

Returns:

true if and only if this instance equals cs.