|
public CreateGeographicCoordinateSystem ( string name, IAngularUnit angularUnit, IHorizontalDatum datum, IPrimeMeridian primeMeridian, |
||
| name | string | Name of geographical coordinate system |
| angularUnit | IAngularUnit | Angular units |
| datum | IHorizontalDatum | Horizontal datum |
| primeMeridian | IPrimeMeridian | Prime meridian |
| axis0 | First axis | |
| axis1 | Second axis | |
| return | IGeographicCoordinateSystem | |
public void TestMercator_1SP_Projection()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Bessel 1840", 6377397.155, 299.15281, LinearUnit.Metre);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Bessel 1840", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Bessel 1840", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
System.Collections.Generic.List<ProjectionParameter> parameters = new System.Collections.Generic.List<ProjectionParameter>(5);
parameters.Add(new ProjectionParameter("latitude_of_origin", 0));
parameters.Add(new ProjectionParameter("central_meridian", 110));
parameters.Add(new ProjectionParameter("scale_factor", 0.997));
parameters.Add(new ProjectionParameter("false_easting", 3900000));
parameters.Add(new ProjectionParameter("false_northing", 900000));
IProjection projection = cFac.CreateProjection("Mercator_1SP", "Mercator_1SP", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("Makassar / NEIEZ", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
double[] pGeo = new double[] { 120, -3 };
double[] pUtm = trans.MathTransform.Transform(pGeo);
double[] pGeo2 = trans.MathTransform.Inverse().Transform(pUtm);
double[] expected = new double[] { 5009726.58, 569150.82 };
Assert.IsTrue(ToleranceLessThan(pUtm, expected, 0.02), String.Format("Mercator_1SP forward transformation outside tolerance, Expected {0}, got {1}", expected.ToString(), pUtm.ToString()));
Assert.IsTrue(ToleranceLessThan(pGeo, pGeo2, 0.0000001), String.Format("Mercator_1SP reverse transformation outside tolerance, Expected {0}, got {1}", pGeo.ToString(), pGeo2.ToString()));
}
private void TestMercator_2SP()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Krassowski 1940", 6378245.0, 298.3, LinearUnit.Metre);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Krassowski 1940", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Krassowski 1940", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
List<ProjectionParameter> parameters = new List<ProjectionParameter>();
parameters.Add(new ProjectionParameter("latitude_of_origin", 42));
parameters.Add(new ProjectionParameter("central_meridian", 51));
parameters.Add(new ProjectionParameter("false_easting", 0));
parameters.Add(new ProjectionParameter("false_northing", 0));
IProjection projection = cFac.CreateProjection("Mercator_2SP", "Mercator_2SP", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("Pulkovo 1942 / Mercator Caspian Sea", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
SharpMap.Geometries.Point pGeo = new SharpMap.Geometries.Point(53,53);
SharpMap.Geometries.Point pUtm = new Point(trans.MathTransform.Transform(pGeo.ToDoubleArray()));
SharpMap.Geometries.Point pGeo2 = new Point(trans.MathTransform.Inverse().Transform(pUtm.ToDoubleArray()));
result.Text += PrintResultTable(gcs, coordsys, pGeo, pUtm, new Point(165704.29, 5171848.07), pGeo2, "Mercator_2SP test");
}
public void TestAlbersProjection()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Clarke 1866", 6378206.4, 294.9786982138982, LinearUnit.USSurveyFoot);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Clarke 1866", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Clarke 1866", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
System.Collections.Generic.List<ProjectionParameter> parameters = new System.Collections.Generic.List<ProjectionParameter>(5);
parameters.Add(new ProjectionParameter("central_meridian", -96));
parameters.Add(new ProjectionParameter("latitude_of_center", 23));
parameters.Add(new ProjectionParameter("standard_parallel_1", 29.5));
parameters.Add(new ProjectionParameter("standard_parallel_2", 45.5));
parameters.Add(new ProjectionParameter("false_easting", 0));
parameters.Add(new ProjectionParameter("false_northing", 0));
IProjection projection = cFac.CreateProjection("Albers Conical Equal Area", "albers", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("Albers Conical Equal Area", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
double[] pGeo = new double[] { -75, 35 };
double[] pUtm = trans.MathTransform.Transform(pGeo);
double[] pGeo2 = trans.MathTransform.Inverse().Transform(pUtm);
double[] expected = new double[] { 1885472.7, 1535925 };
Assert.IsTrue(ToleranceLessThan(pUtm, expected, 0.05), String.Format("Albers forward transformation outside tolerance, Expected {0}, got {1}", expected.ToString(), pUtm.ToString()));
Assert.IsTrue(ToleranceLessThan(pGeo, pGeo2, 0.0000001), String.Format("Albers reverse transformation outside tolerance, Expected {0}, got {1}", pGeo.ToString(), pGeo2.ToString()));
}
private void TestMercator_1SP()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Bessel 1840", 6377397.155, 299.15281, LinearUnit.Metre);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Bessel 1840", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Bessel 1840", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
List<ProjectionParameter> parameters = new List<ProjectionParameter>();
parameters.Add(new ProjectionParameter("latitude_of_origin", 0));
parameters.Add(new ProjectionParameter("central_meridian", 110));
parameters.Add(new ProjectionParameter("scale_factor", 0.997));
parameters.Add(new ProjectionParameter("false_easting", 3900000));
parameters.Add(new ProjectionParameter("false_northing", 900000));
IProjection projection = cFac.CreateProjection("Mercator_1SP", "Mercator_1SP", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("Makassar / NEIEZ", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
SharpMap.Geometries.Point pGeo = new SharpMap.Geometries.Point(120, -3);
SharpMap.Geometries.Point pUtm = new Point(trans.MathTransform.Transform(pGeo.ToDoubleArray()));
SharpMap.Geometries.Point pGeo2 = new Point(trans.MathTransform.Inverse().Transform(pUtm.ToDoubleArray()));
result.Text += PrintResultTable(gcs, coordsys, pGeo, pUtm, new Point(5009726.58, 569150.82), pGeo2, "Mercator_1SP test");
}
private void TestGeocentric()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("WGS84", AngularUnit.Degrees, HorizontalDatum.WGS84,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East), new AxisInfo("Lat", AxisOrientationEnum.North));
IGeocentricCoordinateSystem geoccs = cFac.CreateGeocentricCoordinateSystem("WGS84 geocentric", gcs.HorizontalDatum, LinearUnit.Metre, PrimeMeridian.Greenwich);
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, geoccs);
ICoordinate pGeo = GeometryFactory.CreateCoordinate(2.12955, 53.80939444, 73);
ICoordinate pGc = GeometryFactory.CreateCoordinate(trans.MathTransform.Transform(new double[] { pGeo.X, pGeo.Y, pGeo.Z }));
ICoordinate pGeo2 = GeometryFactory.CreateCoordinate(trans.MathTransform.Inverse().Transform(new double[] { pGc.X, pGc.Y, pGc.Z }));
result.Text += PrintResultTable(gcs, geoccs, pGeo, pGc, GeometryFactory.CreateCoordinate(3771793.97, 140253.34, 5124304.35), pGeo2, "Geocentric test");
return;
}
public void TestMercator_2SP_Projection()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Krassowski 1940", 6378245.0, 298.3, LinearUnit.Metre);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Krassowski 1940", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Krassowski 1940", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
System.Collections.Generic.List<ProjectionParameter> parameters = new System.Collections.Generic.List<ProjectionParameter>(5);
parameters.Add(new ProjectionParameter("latitude_of_origin", 42));
parameters.Add(new ProjectionParameter("central_meridian", 51));
parameters.Add(new ProjectionParameter("false_easting", 0));
parameters.Add(new ProjectionParameter("false_northing", 0));
IProjection projection = cFac.CreateProjection("Mercator_2SP", "Mercator_2SP", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("Pulkovo 1942 / Mercator Caspian Sea", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
double[] pGeo = new double[] { 53, 53 };
double[] pUtm = trans.MathTransform.Transform(pGeo);
double[] pGeo2 = trans.MathTransform.Inverse().Transform(pUtm);
double[] expected = new double[] { 165704.29, 5171848.07 };
Assert.IsTrue(ToleranceLessThan(pUtm, expected, 0.02), String.Format("Mercator_2SP forward transformation outside tolerance, Expected {0}, got {1}", expected.ToString(), pUtm.ToString()));
Assert.IsTrue(ToleranceLessThan(pGeo, pGeo2, 0.0000001), String.Format("Mercator_2SP reverse transformation outside tolerance, Expected {0}, got {1}", pGeo.ToString(), pGeo2.ToString()));
}
public void TestDatumTransform()
{
CoordinateSystemFactory cFac = new CoordinateSystemFactory();
//Define datums
HorizontalDatum wgs72 = HorizontalDatum.WGS72;
HorizontalDatum ed50 = HorizontalDatum.ED50;
//Define geographic coordinate systems
IGeographicCoordinateSystem gcsWGS72 = cFac.CreateGeographicCoordinateSystem("WGS72 Geographic", AngularUnit.Degrees, wgs72, PrimeMeridian.Greenwich,
new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
IGeographicCoordinateSystem gcsWGS84 = cFac.CreateGeographicCoordinateSystem("WGS84 Geographic", AngularUnit.Degrees, HorizontalDatum.WGS84, PrimeMeridian.Greenwich,
new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
IGeographicCoordinateSystem gcsED50 = cFac.CreateGeographicCoordinateSystem("ED50 Geographic", AngularUnit.Degrees, ed50, PrimeMeridian.Greenwich,
new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
//Define geocentric coordinate systems
IGeocentricCoordinateSystem gcenCsWGS72 = cFac.CreateGeocentricCoordinateSystem("WGS72 Geocentric", wgs72, LinearUnit.Metre, PrimeMeridian.Greenwich);
IGeocentricCoordinateSystem gcenCsWGS84 = cFac.CreateGeocentricCoordinateSystem("WGS84 Geocentric", HorizontalDatum.WGS84, LinearUnit.Metre, PrimeMeridian.Greenwich);
IGeocentricCoordinateSystem gcenCsED50 = cFac.CreateGeocentricCoordinateSystem("ED50 Geocentric", ed50, LinearUnit.Metre, PrimeMeridian.Greenwich);
//Define projections
System.Collections.Generic.List<ProjectionParameter> parameters = new System.Collections.Generic.List<ProjectionParameter>(5);
parameters.Add(new ProjectionParameter("latitude_of_origin", 0));
parameters.Add(new ProjectionParameter("central_meridian", 9));
parameters.Add(new ProjectionParameter("scale_factor", 0.9996));
parameters.Add(new ProjectionParameter("false_easting", 500000));
parameters.Add(new ProjectionParameter("false_northing", 0));
IProjection projection = cFac.CreateProjection("Transverse Mercator", "Transverse_Mercator", parameters);
IProjectedCoordinateSystem utmED50 = cFac.CreateProjectedCoordinateSystem("ED50 UTM Zone 32N", gcsED50, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
IProjectedCoordinateSystem utmWGS84 = cFac.CreateProjectedCoordinateSystem("WGS84 UTM Zone 32N", gcsWGS84, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
//Set TOWGS84 parameters
wgs72.Wgs84Parameters = new Wgs84ConversionInfo(0, 0, 4.5, 0, 0, 0.554, 0.219);
ed50.Wgs84Parameters = new Wgs84ConversionInfo(-81.0703, -89.3603, -115.7526,
-0.48488, -0.02436, -0.41321,
-0.540645); //Parameters for Denmark
//Set up coordinate transformations
CoordinateTransformationFactory ctFac = new CoordinateTransformationFactory();
ICoordinateTransformation ctForw = ctFac.CreateFromCoordinateSystems(gcsWGS72, gcenCsWGS72); //Geographic->Geocentric (WGS72)
ICoordinateTransformation ctWGS84_Gcen2Geo = ctFac.CreateFromCoordinateSystems(gcenCsWGS84, gcsWGS84); //Geocentric->Geographic (WGS84)
ICoordinateTransformation ctWGS84_Geo2UTM = ctFac.CreateFromCoordinateSystems(gcsWGS84, utmWGS84); //UTM ->Geographic (WGS84)
ICoordinateTransformation ctED50_UTM2Geo = ctFac.CreateFromCoordinateSystems(utmED50, gcsED50); //UTM ->Geographic (ED50)
ICoordinateTransformation ctED50_Geo2Gcen = ctFac.CreateFromCoordinateSystems(gcsED50, gcenCsED50); //Geographic->Geocentric (ED50)
//Test datum-shift from WGS72 to WGS84
//Point3D pGeoCenWGS72 = ctForw.MathTransform.Transform(pLongLatWGS72) as Point3D;
double[] pGeoCenWGS72 = new double[] {3657660.66, 255768.55, 5201382.11};
ICoordinateTransformation geocen_ed50_2_Wgs84 = ctFac.CreateFromCoordinateSystems(gcenCsWGS72, gcenCsWGS84);
double[] pGeoCenWGS84 = geocen_ed50_2_Wgs84.MathTransform.Transform(pGeoCenWGS72);
//Point3D pGeoCenWGS84 = wgs72.Wgs84Parameters.Apply(pGeoCenWGS72);
Assert.IsTrue(ToleranceLessThan(new double[] { 3657660.78, 255778.43, 5201387.75 }, pGeoCenWGS84, 0.01));
ICoordinateTransformation utm_ed50_2_Wgs84 = ctFac.CreateFromCoordinateSystems(utmED50, utmWGS84);
double[] pUTMED50 = new double[] {600000, 6100000};
double[] pUTMWGS84 = utm_ed50_2_Wgs84.MathTransform.Transform(pUTMED50);
Assert.IsTrue(ToleranceLessThan(new double[] { 599928.6, 6099790.2 }, pUTMWGS84, 0.1));
//Perform reverse
ICoordinateTransformation utm_Wgs84_2_Ed50 = ctFac.CreateFromCoordinateSystems(utmWGS84, utmED50);
pUTMED50 = utm_Wgs84_2_Ed50.MathTransform.Transform(pUTMWGS84);
Assert.IsTrue(ToleranceLessThan(new double[] {600000, 6100000}, pUTMED50, 0.1));
//Assert.IsTrue(Math.Abs((pUTMWGS84 as Point3D).Z - 36.35) < 0.5);
//Point pExpected = Point.FromDMS(2, 7, 46.38, 53, 48, 33.82);
//ED50_to_WGS84_Denmark: datum.Wgs84Parameters = new Wgs84ConversionInfo(-89.5, -93.8, 127.6, 0, 0, 4.5, 1.2);
}
public void TestGeocentric()
{
CoordinateSystemFactory cFac = new CoordinateSystemFactory();
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("ETRF89 Geographic", AngularUnit.Degrees, HorizontalDatum.ETRF89, PrimeMeridian.Greenwich,
new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
IGeocentricCoordinateSystem gcenCs = cFac.CreateGeocentricCoordinateSystem("ETRF89 Geocentric", HorizontalDatum.ETRF89, LinearUnit.Metre, PrimeMeridian.Greenwich);
CoordinateTransformationFactory gtFac = new CoordinateTransformationFactory();
ICoordinateTransformation ct = gtFac.CreateFromCoordinateSystems(gcs, gcenCs);
double[] pExpected = new double[] { 2 + 7.0 / 60 + 46.38 / 3600, 53 + 48.0 / 60 + 33.82/3600 }; // Point.FromDMS(2, 7, 46.38, 53, 48, 33.82);
double[] pExpected3D = new double[] { pExpected[0], pExpected[1], 73.0 };
double[] p0 = new double[] { 3771793.97, 140253.34, 5124304.35 };
double[] p1 = ct.MathTransform.Transform(pExpected3D) as double[];
double[] p2 = ct.MathTransform.Inverse().Transform(p1) as double[];
Assert.IsTrue(ToleranceLessThan(p1, p0, 0.01));
Assert.IsTrue(ToleranceLessThan(p2, pExpected, 0.00001));
}
public void TestLambertConicConformal2SP_Projection()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Clarke 1866", 20925832.16, 294.97470, LinearUnit.USSurveyFoot);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Clarke 1866", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Clarke 1866", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
System.Collections.Generic.List<ProjectionParameter> parameters = new System.Collections.Generic.List<ProjectionParameter>(5);
parameters.Add(new ProjectionParameter("latitude_of_origin", 27.833333333));
parameters.Add(new ProjectionParameter("central_meridian", -99));
parameters.Add(new ProjectionParameter("standard_parallel_1", 28.3833333333));
parameters.Add(new ProjectionParameter("standard_parallel_2", 30.2833333333));
parameters.Add(new ProjectionParameter("false_easting", 2000000));
parameters.Add(new ProjectionParameter("false_northing", 0));
IProjection projection = cFac.CreateProjection("Lambert Conic Conformal (2SP)", "lambert_conformal_conic_2sp", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("NAD27 / Texas South Central", gcs, projection, LinearUnit.USSurveyFoot, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
double[] pGeo = new double[] { -96, 28.5 };
double[] pUtm = trans.MathTransform.Transform(pGeo);
double[] pGeo2 = trans.MathTransform.Inverse().Transform(pUtm);
double[] expected = new double[] { 2963503.91, 254759.80 };
Assert.IsTrue(ToleranceLessThan(pUtm, expected, 0.02), String.Format("LambertConicConformal2SP forward transformation outside tolerance, Expected {0}, got {1}", expected.ToString(), pUtm.ToString()));
Assert.IsTrue(ToleranceLessThan(pGeo, pGeo2, 0.0000001), String.Format("LambertConicConformal2SP reverse transformation outside tolerance, Expected {0}, got {1}", pGeo.ToString(), pGeo2.ToString()));
}
public void TestTransverseMercator_Projection()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Airy 1830", 6377563.396, 299.32496, LinearUnit.Metre);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Airy 1830", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Airy 1830", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
System.Collections.Generic.List<ProjectionParameter> parameters = new System.Collections.Generic.List<ProjectionParameter>(5);
parameters.Add(new ProjectionParameter("latitude_of_origin", 49));
parameters.Add(new ProjectionParameter("central_meridian", -2));
parameters.Add(new ProjectionParameter("scale_factor", 0.9996012717));
parameters.Add(new ProjectionParameter("false_easting", 400000));
parameters.Add(new ProjectionParameter("false_northing", -100000));
IProjection projection = cFac.CreateProjection("Transverse Mercator", "Transverse_Mercator", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("OSGB 1936 / British National Grid", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
double[] pGeo = new double[] { 0.5, 50.5 };
double[] pUtm = trans.MathTransform.Transform(pGeo);
double[] pGeo2 = trans.MathTransform.Inverse().Transform(pUtm);
double[] expected = new double[] { 577274.99, 69740.50 };
Assert.IsTrue(ToleranceLessThan(pUtm, expected, 0.02), String.Format("TransverseMercator forward transformation outside tolerance, Expected {0}, got {1}", expected.ToString(), pUtm.ToString()));
Assert.IsTrue(ToleranceLessThan(pGeo, pGeo2, 0.0000001), String.Format("TransverseMercator reverse transformation outside tolerance, Expected {0}, got {1}", pGeo.ToString(), pGeo2.ToString()));
}
private static IProjectedCoordinateSystem createExpectedCoordinateSystem()
{
ICoordinateSystemFactory factory = new CoordinateSystemFactory();
IEllipsoid grs80 = Ellipsoid.GRS80;
IHorizontalDatum harn = factory.CreateHorizontalDatum("D_North_American_1983_HARN",
DatumType.HD_Classic, grs80, null);
IPrimeMeridian greenwich = PrimeMeridian.Greenwich;
AxisInfo axis0 = new AxisInfo("Lon", AxisOrientationEnum.East);
AxisInfo axis1 = new AxisInfo("Lat", AxisOrientationEnum.North);
IGeographicCoordinateSystem gcs = factory.CreateGeographicCoordinateSystem("GCS_North_American_1983_HARN",
AngularUnit.Degrees, harn, greenwich,
axis0, axis1);
IProjection prj = factory.CreateProjection(
"Lambert_Conformal_Conic",
"Lambert_Conformal_Conic",
new ProjectionParameter[]
{
new ProjectionParameter("False_Easting", 8202099.737532808),
new ProjectionParameter("False_Northing", 0),
new ProjectionParameter("Central_Meridian", -120.5),
new ProjectionParameter("Standard_Parallel_1", 44.33333333333334),
new ProjectionParameter("Standard_Parallel_2", 46.0),
new ProjectionParameter("Latitude_Of_Origin", 43.66666666666666)
});
IProjectedCoordinateSystem expected =
factory.CreateProjectedCoordinateSystem("NAD_1983_HARN_StatePlane_Oregon_North_FIPS_3601",
gcs, prj, LinearUnit.Foot, axis0, axis1);
// TODO: Check if this is correct, since on line 184 of CoorindateSystemFactory.cs, HorizontalDatum is passed in as null
expected.HorizontalDatum = harn;
return expected;
}
private void TestTransverseMercator()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Airy 1830", 6377563.396, 299.32496, LinearUnit.Metre);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Airy 1830", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Airy 1830", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
List<ProjectionParameter> parameters = new List<ProjectionParameter>();
parameters.Add(new ProjectionParameter("latitude_of_origin", 49));
parameters.Add(new ProjectionParameter("central_meridian", -2));
parameters.Add(new ProjectionParameter("scale_factor", 0.9996012717));
parameters.Add(new ProjectionParameter("false_easting", 400000));
parameters.Add(new ProjectionParameter("false_northing", -100000));
IProjection projection = cFac.CreateProjection("Transverse Mercator", "Transverse_Mercator", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("OSGB 1936 / British National Grid", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
SharpMap.Geometries.Point pGeo = new SharpMap.Geometries.Point(0.5, 50.5);
SharpMap.Geometries.Point pUtm = new Point(trans.MathTransform.Transform(pGeo.ToDoubleArray()));
SharpMap.Geometries.Point pGeo2 = new Point(trans.MathTransform.Inverse().Transform(pUtm.ToDoubleArray()));
result.Text += PrintResultTable(gcs, coordsys, pGeo, pUtm, new Point(577274.99, 69740.50), pGeo2, "Transverse Mercator test");
}
private void TestGeocentric()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("WGS84", AngularUnit.Degrees, HorizontalDatum.WGS84,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East), new AxisInfo("Lat", AxisOrientationEnum.North));
IGeocentricCoordinateSystem geoccs = cFac.CreateGeocentricCoordinateSystem("WGS84 geocentric", gcs.HorizontalDatum, LinearUnit.Metre, PrimeMeridian.Greenwich);
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, geoccs);
SharpMap.Geometries.Point3D pGeo = new SharpMap.Geometries.Point3D(2.12955, 53.80939444, 73);
SharpMap.Geometries.Point3D pGc = new Point3D(trans.MathTransform.Transform(pGeo.ToDoubleArray()));
SharpMap.Geometries.Point3D pGeo2 = new Point3D(trans.MathTransform.Inverse().Transform(pGc.ToDoubleArray()));
result.Text += PrintResultTable(gcs, geoccs, pGeo, pGc, new Point3D(3771793.97, 140253.34, 5124304.35), pGeo2, "Geocentric test");
return;
}
private void TestAlbers()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Clarke 1866", 6378206.4, 294.9786982138982,LinearUnit.USSurveyFoot);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Clarke 1866", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Clarke 1866", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
List<ProjectionParameter> parameters = new List<ProjectionParameter>();
parameters.Add(new ProjectionParameter("central_meridian", -96));
parameters.Add(new ProjectionParameter("latitude_of_origin", 23));
parameters.Add(new ProjectionParameter("standard_parallel_1", 29.5));
parameters.Add(new ProjectionParameter("standard_parallel_2", 45.5));
parameters.Add(new ProjectionParameter("false_easting", 0));
parameters.Add(new ProjectionParameter("false_northing", 0));
IProjection projection = cFac.CreateProjection("Albers Conical Equal Area", "albers", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("Albers Conical Equal Area", gcs, projection, LinearUnit.Metre, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
SharpMap.Geometries.Point pGeo = new SharpMap.Geometries.Point(-75,35);
SharpMap.Geometries.Point pUtm = new Point(trans.MathTransform.Transform(pGeo.ToDoubleArray()));
SharpMap.Geometries.Point pGeo2 = new Point(trans.MathTransform.Inverse().Transform(pUtm.ToDoubleArray()));
result.Text += PrintResultTable(gcs, coordsys, pGeo, pUtm, new Point(1885472.7,1535925), pGeo2, "Albers Conical Equal Area test");
}
private void TestLambertConicConformal_2SP()
{
CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Clarke 1866", 20925832.16, 294.97470, LinearUnit.USSurveyFoot);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Clarke 1866", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Clarke 1866", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
List<ProjectionParameter> parameters = new List<ProjectionParameter>();
parameters.Add(new ProjectionParameter("latitude_of_origin", 27.833333333));
parameters.Add(new ProjectionParameter("central_meridian", -99));
parameters.Add(new ProjectionParameter("standard_parallel_1", 28.3833333333));
parameters.Add(new ProjectionParameter("standard_parallel_2", 30.2833333333));
parameters.Add(new ProjectionParameter("false_easting", 2000000));
parameters.Add(new ProjectionParameter("false_northing", 0));
IProjection projection = cFac.CreateProjection("Lambert Conic Conformal (2SP)", "lambert_conformal_conic_2sp", parameters);
IProjectedCoordinateSystem coordsys = cFac.CreateProjectedCoordinateSystem("NAD27 / Texas South Central", gcs, projection, LinearUnit.USSurveyFoot, new AxisInfo("East", AxisOrientationEnum.East), new AxisInfo("North", AxisOrientationEnum.North));
ICoordinateTransformation trans = new CoordinateTransformationFactory().CreateFromCoordinateSystems(gcs, coordsys);
SharpMap.Geometries.Point pGeo = new SharpMap.Geometries.Point(-96, 28.5);
SharpMap.Geometries.Point pUtm = new Point(trans.MathTransform.Transform(pGeo.ToDoubleArray()));
SharpMap.Geometries.Point pGeo2 = new Point(trans.MathTransform.Inverse().Transform(pUtm.ToDoubleArray()));
result.Text += PrintResultTable(gcs, coordsys, pGeo, pUtm, new Point(2963503.91, 254759.80), pGeo2, "Lambert Conic Conformal 2SP test");
}