Application: gvSIG desktop » gvSIG projections

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2012 gvSIG Association

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.proj;

/**

 * A geodetic datum (plural datums, not data) is a reference from which

 * measurements are made. In surveying and geodesy, a datum is a set of

 * reference points on the Earth's surface against which position measurements

 * are made and (often) an associated model of the shape of the Earth (reference

 * ellipsoid) to define a geographic coordinate system.

 * 

 * @see http://en.wikipedia.org/wiki/Datum_%28geodesy%29

 * @see http://en.wikipedia.org/wiki/Geodetic_system

 * 

 * @author <a href="http://www.disid.com">DiSiD Technologies S.L.</a>

 * @version $Rev$

 * @since 0.1.0

 */

public interface Datum {

    /**

     * Returns the Datum short name, like the one used in ProJ4 definitions.

     * 

     * @return the short name.

     */

    public String getShortName();

    /**

     * Returns the Datum name.

     * 

     * @return the Datum name

     */

    public String getName();

    /**

     * Returns the {@link Ellipsoid} used in this Datum.

     * 

     * @return the related {@link Ellipsoid}

     */

    public Ellipsoid getEllipsoid();

}