wgs84conversioninfo.cs

Sharp Map 用于制作GIS系统S harp Map 用于制作GIS系统S harp Map 用于制作GIS系统

// Copyright 2005, 2006 - Morten Nielsen (www.iter.dk)
//
// This file is part of SharpMap.
// SharpMap is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// SharpMap 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 Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public License
// along with SharpMap; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 

using System;

namespace SharpMap.CoordinateSystems
{ 
	/// <summary>
	/// Parameters for a geographic transformation into WGS84. The Bursa Wolf parameters should be applied 
	/// to geocentric coordinates, where the X axis points towards the Greenwich Prime Meridian, the Y axis
	/// points East, and the Z axis points North.
	/// </summary>
	/// <remarks>
	/// <para>These parameters can be used to approximate a transformation from the horizontal datum to the
	/// WGS84 datum using a Bursa Wolf transformation. However, it must be remembered that this transformation
	/// is only an approximation. For a given horizontal datum, different Bursa Wolf transformations can be
	/// used to minimize the errors over different regions.</para>
	/// <para>If the DATUM clause contains a TOWGS84 clause, then this should be its 損referred