verticaldatum.java

GEo 地理操作源代码

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


/**
 * A textual description and/or a set of parameters identifying a particular reference level
 * surface used as a zero-height surface. The description includes its position with respect
 * to the Earth for any of the height types recognized by this standard. There are several
 * types of Vertical Datums, and each may place constraints on the
 * {@linkplain org.opengis.referencing.cs.CoordinateSystemAxis Coordinate Axis} with which
 * it is combined to create a {@linkplain org.opengis.referencing.crs.VerticalCRS Vertical CRS}.
 *
 * @UML abstract CD_VerticalDatum
 * @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>
 */
public interface VerticalDatum extends Datum {
    /**
     * The type of this vertical datum. Default is 揼eoidal