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The development community in building GIS solutions is sustaining an enormous level of effort. The GeoAPI project aims to reduce duplication and increase interoperability by providing neutral, interface-only APIs derived from OGC/ISO Standards.

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/* * GeoAPI - Java interfaces for OGC/ISO standards * http://www.geoapi.org * * Copyright (C) 2004-2011 Open Geospatial Consortium, Inc. * All Rights Reserved. http://www.opengeospatial.org/ogc/legal * * Permission to use, copy, and modify this software and its documentation, with * or without modification, for any purpose and without fee or royalty is hereby * granted, provided that you include the following on ALL copies of the software * and documentation or portions thereof, including modifications, that you make: * * 1. The full text of this NOTICE in a location viewable to users of the * redistributed or derivative work. * 2. Notice of any changes or modifications to the OGC files, including the * date changes were made. * * THIS SOFTWARE AND DOCUMENTATION IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE * NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED * TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT * THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY * PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS. * * COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR * CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENTATION. * * The name and trademarks of copyright holders may NOT be used in advertising or * publicity pertaining to the software without specific, written prior permission. * Title to copyright in this software and any associated documentation will at all * times remain with copyright holders. */ package org.opengis.referencing.operation; /** * A {@linkplain org.opengis.referencing.operation.Conversion conversion} transforming * (longitude,latitude) coordinates to cartesian coordinates * (x,y). Although some map projections can be represented as a * geometric process, in general a map projection is a set of formulae that converts geodetic * latitude and longitude to plane (map) coordinates. Height plays no role in this process, * which is entirely two-dimensional. The same map projection can be applied to many * {@linkplain org.opengis.referencing.crs.GeographicCRS geographic CRSs}, resulting in many * {@linkplain org.opengis.referencing.crs.ProjectedCRS projected CRSs} each of which is related * to the same {@linkplain org.opengis.referencing.datum.GeodeticDatum geodetic datum} as the * geographic CRS on which it was based. *

* An unofficial list of projections and their parameters can * be found there. * Most projections expect the following parameters: * "semi_major" (mandatory), * "semi_minor" (mandatory), * "central_meridian" (default to 0), * "latitude_of_origin" (default to 0), * "scale_factor" (default to 1), * "false_easting" (default to 0) and * "false_northing" (default to 0). * * @departure extension * This interface is not part of the ISO specification. It has been added in GeoAPI at user * request, in order to provide a way to know the kind of map projection. * * @author Martin Desruisseaux (IRD) * @version 3.0 * @since 1.0 * * @see org.opengis.referencing.crs.ProjectedCRS * @see Map projections on MathWorld */ public interface Projection extends Conversion { }