Summary description for MathTransform.

Universal (UTM) and Modified (MTM) Transverses Mercator projections. This is a cylindrical projection, in which the cylinder has been rotated 90°. Instead of being tangent to the equator (or to an other standard latitude), it is tangent to a central meridian. Deformation are more important as we are going futher from the central meridian. The Transverse Mercator projection is appropriate for region wich have a greater extent north-south than east-west.

Reference: John P. Snyder (Map Projections - A Working Manual, U.S. Geological Survey Professional Paper 1395, 1987)

Inheritance: MapProjection
TransverseMercator Class Documentation
Example #1
0
 /// <summary>
 /// Returns the inverse of this projection.
 /// </summary>
 /// <returns>IMathTransform that is the reverse of the current projection.</returns>
 public override IMathTransform Inverse()
 {
     if (_inverse == null)
     {
         _inverse = new TransverseMercator(this._Parameters, !_isInverse);
     }
     return(_inverse);
 }
Example #2
0
        private static IMathTransform CreateCoordinateOperation(IProjection projection, IEllipsoid ellipsoid)
        {
            List<ProjectionParameter> parameterList = new List<ProjectionParameter>(projection.NumParameters);
            for (int i = 0; i < projection.NumParameters; i++)
                parameterList.Add(projection.GetParameter(i));

            parameterList.Add(new ProjectionParameter("semi_major", ellipsoid.SemiMajorAxis));
            parameterList.Add(new ProjectionParameter("semi_minor", ellipsoid.SemiMinorAxis));

            IMathTransform transform = null;
            switch (projection.ClassName.ToLower())
            {
                case "mercator_1sp":
                case "mercator_2sp":
                    //1SP
                    transform = new Mercator(parameterList);
                    break;
                case "transverse_mercator":
                    transform = new TransverseMercator(parameterList);
                    break;
                case "albers":
                    transform = new AlbersProjection(parameterList);
                    break;
                case "lambert_conformal_conic":
                case "lambert_conformal_conic_2sp":
                    transform = new LambertConformalConic2SP(parameterList);
                    break;
                default:
                    throw new NotSupportedException(String.Format("Projection {0} is not supported.", projection.ClassName));
            }
            return transform;
        }
Example #3
0
		/// <summary>
		/// Returns the inverse of this projection.
		/// </summary>
		/// <returns>IMathTransform that is the reverse of the current projection.</returns>
		public override IMathTransform Inverse()
		{
			if (_inverse==null)
				_inverse = new TransverseMercator(this._Parameters, ! _isInverse);
			return _inverse;
		}
Example #4
0
		private static IMathTransform CreateCoordinateOperation(IProjection projection, IEllipsoid ellipsoid, ILinearUnit unit)
		{
			List<ProjectionParameter> parameterList = new List<ProjectionParameter>(projection.NumParameters);
			for (int i = 0; i < projection.NumParameters; i++)
				parameterList.Add(projection.GetParameter(i));

			parameterList.Add(new ProjectionParameter("semi_major", ellipsoid.SemiMajorAxis));
			parameterList.Add(new ProjectionParameter("semi_minor", ellipsoid.SemiMinorAxis));
			parameterList.Add(new ProjectionParameter("unit", unit.MetersPerUnit));
			IMathTransform transform = null;
			switch (projection.ClassName.ToLower(System.Globalization.CultureInfo.InvariantCulture).Replace(' ', '_'))
			{
				case "mercator":
				case "mercator_1sp":
				case "mercator_2sp":
					//1SP
					transform = new Mercator(parameterList);
					break;
				case "transverse_mercator":
					transform = new TransverseMercator(parameterList);
					break;
				case "albers":
				case "albers_conic_equal_area":
					transform = new AlbersProjection(parameterList);
					break;
				case "lambert_conformal_conic":
				case "lambert_conformal_conic_2sp":
				case "lambert_conic_conformal_(2sp)":
					transform = new LambertConformalConic2SP(parameterList);
					break;
				default:
					throw new NotSupportedException(String.Format("Projection {0} is not supported.", projection.ClassName));
			}
			return transform;
		}