geographiccrs.java

GEo 地理操作源代码

/*$************************************************************************************************
 **
 ** $Id: GeographicCRS.java,v 1.1 2004/05/06 15:51:50 desruisseaux Exp $
 **
 ** $Source: /cvsroot/geoapi/src/org/opengis/referencing/crs/GeographicCRS.java,v $
 **
 ** Copyright (C) 2003 Open GIS Consortium, Inc. All Rights Reserved. http://www.opengis.org/Legal/
 **
 *************************************************************************************************/
package org.opengis.referencing.crs;

// OpenGIS direct dependencies
import org.opengis.referencing.cs.EllipsoidalCS;         
import org.opengis.referencing.datum.GeodeticDatum;


/**
 * A coordinate reference system based on an ellipsoidal approximation of the geoid; this provides
 * an accurate representation of the geometry of geographic features for a large portion of the
 * earth's surface.
 *
 * <TABLE CELLPADDING='6' BORDER='1'>
 * <TR BGCOLOR="#EEEEFF"><TH NOWRAP>Used with CS type(s)</TH></TR>
 * <TR><TD>
 *   {@link org.opengis.referencing.cs.EllipsoidalCS Ellipsoidal}
 * </TD></TR></TABLE>
 *
 * @UML abstract SC_GeographicCRS
 * @author ISO 19111
 * @author <A HREF="http://www.opengis.org">OpenGIS&reg; consortium</A>
 * @version <A HREF="http://www.opengis.org/docs/03-073r1.zip">Abstract specification 2.0</A>
 *
 * @revisit OGC document 01-009 defines a <CODE>getWGS84ConversionInfo()</CODE> method.
 *          A <CODE>getWGS84Parameters()</CODE> method was also defined in the datum.
 *          I see no equivalent in this ISO 19111 specification.
 */
public interface GeographicCRS extends CoordinateReferenceSystem {
    /**          
     * Returns the coordinate system, which must be ellipsoidal.         
     *   
     * @return The coordinate system.    
     * @UML association usesCS   
     */          
//  EllipsoidalCS getCoordinateSystem();         

    /**          
     * Returns the datum, which must be geodetic.        
     *   
     * @return The datum.        
     * @UML association usesDatum        
     */          
//  GeodeticDatum getDatum();
}