public void TestLccToGeographicIterative()
{
double phi1 = 33.0;
double phi2 = 45.0;
double phi0 = 23.0;
double lambda0 = -96.0;
double x = 1894410.9;
double y = 1564649.5;
double expectedPhi = 35.0;
double expectedLambda = -75.0;
var projection = new LambertConformalConic(
IRI.Ham.CoordinateSystem.Ellipsoids.Clarke1866,
phi1,
phi2,
lambda0,
phi0);
var result = projection.LCCToGeodeticIterative(new Point(x, y));
Assert.AreEqual(result.X, expectedLambda, .00001);
Assert.AreEqual(result.Y, expectedPhi, .00001);
}
private void SetLambert()
{
double s2, s3, s4;
double a = Double.Parse(m_majorRadiusTextBox.Text);
double f = Double.Parse(m_flatteningTextBox.Text);
double k = Double.Parse(m_KTextBox.Text);
double s1 = Double.Parse(m_stdLat1TextBox.Text);
switch (m_constructorComboBox.SelectedIndex)
{
case 0:
m_lambert = new LambertConformalConic(a, f, s1, k);
break;
case 1:
s2 = Double.Parse(m_stdLat2TextBox.Text);
m_lambert = new LambertConformalConic(a, f, s1, s2, k);
break;
case 2:
s2 = Double.Parse(m_stdLat2TextBox.Text);
s3 = Double.Parse(m_sinLat2TextBox.Text);
s4 = Double.Parse(m_cosLat2TextBox.Text);
m_lambert = new LambertConformalConic(a, f, s1, s2, s3, s4, k);
break;
default:
break;
}
m_centralScaleTextBox.Text = m_lambert.CentralScale.ToString();
m_originLatitudeTextBox.Text = m_lambert.OriginLatitude.ToString();
}
public void ConicProj7()
{
var lcc = new LambertConformalConic(Ellipsoid.WGS84, 90, 90, 1);
var(lat, lon) = lcc.Reverse(0, 0, -1e150);
Assert.AreEqual(-90.0, lat, 0.01);
Assert.AreEqual(0.00, Math.Abs(lon), 0.001);
}
public void ConicProj6()
{
var lcc = new LambertConformalConic(Ellipsoid.WGS84, 45, 45, 1);
var(lat, lon) = lcc.Reverse(0, 0, double.NegativeInfinity);
Assert.AreEqual(-90.0, lat, 0.01);
Assert.AreEqual(0.00, Math.Abs(lon), 0.001);
}
public void ConicProj4()
{
var lcc = new LambertConformalConic(Ellipsoid.WGS84, 0, 0, 1);
var(lat, lon) = lcc.Reverse(0, 1113195, double.PositiveInfinity);
Assert.AreEqual(90.0, lat, 0.01);
Assert.AreEqual(10.00, lon, 0.001);
}
public void ConicProj3_CheckFixForLambertConformalConic_ReverseOverflowBugs()
{
var lcc = new LambertConformalConic(Ellipsoid.WGS84, 0, 0, 1);
var(lat, lon) = lcc.Reverse(0, 1113195, -1e10);
Assert.AreEqual(-90.0, lat, 0.01);
Assert.AreEqual(10.00, lon, 0.001);
}
public void TestGeographicToLcc()
{
var result = new LambertConformalConic(Ellipsoids.Clarke1866, 33.0, 45.0, -96.0, 23.0).FromGeodetic(new Point(-75.0, 35.0));
Assert.AreEqual(result.X, 1894410.9, .1);
Assert.AreEqual(result.Y, 1564649.5, .1);
var ellipse = IRI.Ham.CoordinateSystem.Ellipsoids.GRS80;
double phi0 = 52;
double phi1 = 35;
double phi2 = 65;
double lambda0 = 10;
var projection = new LambertConformalConic(ellipse, phi1, phi2, lambda0, phi0);
//Iran
double lambda = 53;
double phi = 33;
result = projection.FromGeodetic(new Point(lambda, phi));
Assert.AreEqual(result.X + 4000000, 7830046.77, .01);
Assert.AreEqual(result.Y + 2800000, 1879902.99, .01);
//Canada
lambda = -105;
phi = 54;
result = projection.FromGeodetic(new Point(lambda, phi));
Assert.AreEqual(result.X + 4000000, -685838.46, .01);
Assert.AreEqual(result.Y + 2800000, 7633442.68, .01);
//Brazil
lambda = -53;
phi = -12;
result = projection.FromGeodetic(new Point(lambda, phi));
Assert.AreEqual(result.X + 4000000, -5883916.57, .01);
Assert.AreEqual(result.Y + 2800000, -936363.79, .01);
//Autralia
lambda = 134;
phi = -23;
result = projection.FromGeodetic(new Point(lambda, phi));
Assert.AreEqual(result.X + 4000000, 19245528.93, .01);
Assert.AreEqual(result.Y + 2800000, 9343431.52, .01);
}
public void ConicProj2_CheckFixForLambertConformalConic_ForwardBug()
{
var lcc = new LambertConformalConic(Ellipsoid.WGS84, -30, -30, 1);
var(x, y) = lcc.Forward(0, -30, 0, out var gamma, out var k);
Assert.AreEqual(0.0, Math.Abs(x), 0.01);
Assert.AreEqual(0.0, Math.Abs(y), 0.01);
Assert.AreEqual(0.0, Math.Abs(gamma), 0.01);
Assert.AreEqual(1.0, k, 0.01);
}
public void MainTest()
{
var clarke = IRI.Ham.CoordinateSystem.Ellipsoids.Clarke1880Rgs;
double phi0 = 32.5;
double phi1 = 29.65508274166;
double phi2 = 35.31468809166;
double lambda0 = 45.0;
var niocLcc = new LambertConformalConic(clarke, phi1, phi2, lambda0, phi0, 1500000.0, 1166200.0, 0.9987864078);
var xLccNioc = 2047473.33479;
var yLccNioc = 912594.777238;
var xWgs84 = 50.689721;
var yWgs84 = 30.072906;
var xWebMercator = 5642753.9243;
var yWebMercator = 3512924.70491;
var xClarke1880Rgs = 50.689721;
var yClarke1880Rgs = 30.075637;
var wgs84 = niocLcc.ToWgs84Geodetic(new Point(xLccNioc, yLccNioc));
Assert.AreEqual(xWgs84, wgs84.X, 1E-6);
Assert.AreEqual(yWgs84, wgs84.Y, 1E-6);
var clarke1880 = niocLcc.ToGeodetic(new Point(xLccNioc, yLccNioc));
Assert.AreEqual(xClarke1880Rgs, clarke1880.X, 1E-6);
Assert.AreEqual(yClarke1880Rgs, clarke1880.Y, 1E-6);
var webMercator = MapProjects.GeodeticWgs84ToWebMercator(wgs84);
Assert.AreEqual(xWebMercator, webMercator.X, 0.05);
Assert.AreEqual(yWebMercator, webMercator.Y, 0.05);
var clarke1880_2 = Transformation.ChangeDatum(wgs84, Ellipsoids.WGS84, Ellipsoids.Clarke1880Rgs);
Assert.AreEqual(xClarke1880Rgs, clarke1880_2.X, 1E-6);
Assert.AreEqual(yClarke1880Rgs, clarke1880_2.Y, 1E-6);
}
static void Main(string[] args)
{
try {
// Define the Pennsylvania South state coordinate system EPSG:3364
// http://www.spatialreference.org/ref/epsg/3364/
const double
lat1 = 40 + 58 / 60.0, lat2 = 39 + 56 / 60.0, // standard parallels
k1 = 1, // scale
lat0 = 39 + 20 / 60.0, lon0 = -77 - 45 / 60.0, // origin
fe = 600000, fn = 0; // false easting and northing
// Set up basic projection
LambertConformalConic PASouth = new LambertConformalConic(Constants.WGS84.MajorRadius,
Constants.WGS84.Flattening,
lat1, lat2, k1);
double x0, y0;
// Transform origin point
PASouth.Forward(lon0, lat0, lon0, out x0, out y0);
x0 -= fe; y0 -= fn;
{
// Sample conversion from geodetic to PASouth grid
double lat = 39.95, lon = -75.17; // Philadelphia
double x, y;
PASouth.Forward(lon0, lat, lon, out x, out y);
x -= x0; y -= y0;
Console.WriteLine(String.Format("{0} {1}", x, y));
}
{
// Sample conversion from PASouth grid to geodetic
double x = 820e3, y = 72e3;
double lat, lon;
x += x0; y += y0;
PASouth.Reverse(lon0, x, y, out lat, out lon);
Console.WriteLine(String.Format("{0} {1}", lat, lon));
}
}
catch (GeographicErr e) {
Console.WriteLine(String.Format("Caught exception: {0}", e.Message));
}
}
static void Main(string[] args)
{
try {
// Define the Pennsylvania South state coordinate system EPSG:3364
// http://www.spatialreference.org/ref/epsg/3364/
const double
lat1 = 40 + 58/60.0, lat2 = 39 + 56/60.0, // standard parallels
k1 = 1, // scale
lat0 = 39 + 20/60.0, lon0 =-77 - 45/60.0, // origin
fe = 600000, fn = 0; // false easting and northing
// Set up basic projection
LambertConformalConic PASouth = new LambertConformalConic( Constants.WGS84.MajorRadius,
Constants.WGS84.Flattening,
lat1, lat2, k1);
double x0, y0;
// Transform origin point
PASouth.Forward(lon0, lat0, lon0, out x0, out y0);
x0 -= fe; y0 -= fn;
{
// Sample conversion from geodetic to PASouth grid
double lat = 39.95, lon = -75.17; // Philadelphia
double x, y;
PASouth.Forward(lon0, lat, lon, out x, out y);
x -= x0; y -= y0;
Console.WriteLine( String.Format("{0} {1}", x, y) );
}
{
// Sample conversion from PASouth grid to geodetic
double x = 820e3, y = 72e3;
double lat, lon;
x += x0; y += y0;
PASouth.Reverse(lon0, x, y, out lat, out lon);
Console.WriteLine( String.Format("{0} {1}", lat, lon) );
}
}
catch (GeographicErr e) {
Console.WriteLine( String.Format("Caught exception: {0}", e.Message) );
}
}
private static PrjFile AsEsriPrjFile(LambertConformalConic lcc)
{
PrjTree root = new PrjTree();
root.Name = PrjFile._projcs;
root.Values = new List <string>()
{
string.IsNullOrWhiteSpace(lcc.Title) ? "LAMBERT CONFORMAL CONIC" : lcc.Title
};
var geogcs = new PrjTree(lcc.Ellipsoid, lcc.DatumName);
var projection = new PrjTree(PrjFile._projection, PrjFile._esriLambertConformalConic);
var falseEasting = new PrjTree(PrjFile._parameter, PrjFile._falseEasting, lcc.FalseEasting.AsExactString());
var falseNorthing = new PrjTree(PrjFile._parameter, PrjFile._falseNorthing, lcc.FalseNorthing.AsExactString());
var centralMeridian = new PrjTree(PrjFile._parameter, PrjFile._centralMeridian, lcc.CentralMeridian.AsExactString());
var standardParallel1 = new PrjTree(PrjFile._parameter, PrjFile._standardParallel1, lcc.StandardParallel1.AsExactString());
var standardParallel2 = new PrjTree(PrjFile._parameter, PrjFile._standardParallel2, lcc.StandardParallel2.AsExactString());
var scaleFactor = new PrjTree(PrjFile._parameter, PrjFile._scaleFactor, lcc.StandardParallel2.AsExactString());
var latitudeOfOrigin = new PrjTree(PrjFile._parameter, PrjFile._latitudeOfOrigin, lcc.StandardParallel2.AsExactString());
var unit = PrjTree.MeterUnit;
root.Children = new List <PrjTree>()
{
geogcs, projection, falseEasting, falseNorthing, centralMeridian, standardParallel1, standardParallel2, scaleFactor, latitudeOfOrigin, unit
};
return(new PrjFile(root));
}
public void TestLccToGeographic()
{
double expectedPhi = 35.0;
double expectedLambda = -75.0;
var result = new LambertConformalConic(
IRI.Ham.CoordinateSystem.Ellipsoids.Clarke1866,
33.0,
45.0,
-96.0,
23.0).ToGeodetic(new Point(1894410.9, 1564649.5));
Assert.AreEqual(result.X, expectedLambda, .00001);
Assert.AreEqual(result.Y, expectedPhi, .00001);
var ellipse = IRI.Ham.CoordinateSystem.Ellipsoids.GRS80;
double phi0 = 52;
double phi1 = 35;
double phi2 = 65;
double lambda0 = 10;
var projection = new LambertConformalConic(ellipse, phi1, phi2, lambda0, phi0);
//China
double x = 10000000 - 4000000;
double y = 4000000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, 85.22674468408002, 0.000001);
Assert.AreEqual(result.Y, 32.27382257394294, 0.000001);
//Canada
x = -800000 - 4000000;
y = 7000000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, -95.34976832367953, 0.000001);
Assert.AreEqual(result.Y, 52.469308415860205, 0.000001);
//Brazil
x = -5000000 - 4000000;
y = -350000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, -52.14245756518865, 0.000001);
Assert.AreEqual(result.Y, -5.873476680963928, 0.000001);
//Autralia
x = 19000000 - 4000000;
y = 9000000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, 132.45309686067716, 0.000001);
Assert.AreEqual(result.Y, -21.744457361769854, 0.000001);
}
private void OnValidate(object sender, EventArgs e)
{
try
{
const double DEG_TO_RAD = 3.1415926535897932384626433832795 / 180.0;
AlbersEqualArea a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaNorth);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaSouth);
double radius = a.EquatorialRadius;
double f = a.Flattening;
a = new AlbersEqualArea(radius, f, 60.0, 1.0);
a = new AlbersEqualArea(radius, f, 60.0, 70.0, 1.0);
a = new AlbersEqualArea(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0 * DEG_TO_RAD), Math.Cos(89.0 * DEG_TO_RAD), 1.0);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.CylindricalEqualArea);
double lon0 = 0.0, lat = 32.0, lon = -86.0, x, y, gamma, k, x1, y1;
a.Forward(lon0, lat, lon, out x, out y, out gamma, out k);
a.Forward(lon0, lat, lon, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in AlbersEqualArea.Forward");
}
a.Reverse(lon0, x, y, out lat, out lon, out gamma, out k);
a.Reverse(lon0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in AlbersEqualArea.Reverse");
}
LambertConformalConic b = new LambertConformalConic(radius, f, 60.0, 1.0);
b = new LambertConformalConic(radius, f, 60.0, 65.0, 1.0);
b = new LambertConformalConic(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0 * DEG_TO_RAD), Math.Cos(89.0 * DEG_TO_RAD), 1.0);
b = new LambertConformalConic();
b.SetScale(60.0, 1.0);
b.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
b.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in LambertConformalConic.Forward");
}
b.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
b.Reverse(-87.0, x, y, out x1, out y1, out gamma, out k);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in LambertConformalConic.Reverse");
}
TransverseMercator c = new TransverseMercator(radius, f, 1.0);
c = new TransverseMercator();
c.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
c.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in TransverseMercator.Forward");
}
c.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
c.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in TransverseMercator.Reverse");
}
TransverseMercatorExact d = new TransverseMercatorExact(radius, f, 1.0, false);
d = new TransverseMercatorExact();
d.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
d.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in TransverseMercatorExact.Forward");
}
d.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
d.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in TransverseMercatorExact.Reverse");
}
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
MessageBox.Show("No errors detected", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
private void SetLambert()
{
double s2, s3, s4;
double a = Double.Parse(m_majorRadiusTextBox.Text);
double f = Double.Parse(m_flatteningTextBox.Text);
double k = Double.Parse(m_KTextBox.Text);
double s1 = Double.Parse(m_stdLat1TextBox.Text);
switch (m_constructorComboBox.SelectedIndex)
{
case 0:
m_lambert = new LambertConformalConic(a, f, s1, k);
break;
case 1:
s2 = Double.Parse(m_stdLat2TextBox.Text);
m_lambert = new LambertConformalConic(a, f, s1, s2, k);
break;
case 2:
s2 = Double.Parse(m_stdLat2TextBox.Text);
s3 = Double.Parse(m_sinLat2TextBox.Text);
s4 = Double.Parse(m_cosLat2TextBox.Text);
m_lambert = new LambertConformalConic(a, f, s1, s2, s3, s4, k);
break;
default:
break;
}
m_centralScaleTextBox.Text = m_lambert.CentralScale.ToString();
m_originLatitudeTextBox.Text = m_lambert.OriginLatitude.ToString();
}
private void OnValidate(object sender, EventArgs e)
{
try
{
const double DEG_TO_RAD = 3.1415926535897932384626433832795 / 180.0;
AlbersEqualArea a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaNorth);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaSouth);
double radius = a.MajorRadius;
double f = a.Flattening;
a = new AlbersEqualArea(radius, f, 60.0, 1.0);
a = new AlbersEqualArea(radius, f, 60.0, 70.0, 1.0);
a = new AlbersEqualArea(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0*DEG_TO_RAD), Math.Cos(89.0*DEG_TO_RAD), 1.0);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.CylindricalEqualArea);
double lon0 = 0.0, lat = 32.0, lon = -86.0, x, y, gamma, k, x1, y1;
a.Forward(lon0, lat, lon, out x, out y, out gamma, out k);
a.Forward(lon0, lat, lon, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in AlbersEqualArea.Forward");
a.Reverse(lon0, x, y, out lat, out lon, out gamma, out k);
a.Reverse(lon0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
throw new Exception("Error in AlbersEqualArea.Reverse");
LambertConformalConic b = new LambertConformalConic(radius, f, 60.0, 1.0);
b = new LambertConformalConic(radius, f, 60.0, 65.0, 1.0);
b = new LambertConformalConic(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0 * DEG_TO_RAD), Math.Cos(89.0 * DEG_TO_RAD), 1.0);
b = new LambertConformalConic();
b.SetScale(60.0, 1.0);
b.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
b.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in LambertConformalConic.Forward");
b.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
b.Reverse(-87.0, x, y, out x1, out y1, out gamma, out k);
if (lat != x1 || lon != y1)
throw new Exception("Error in LambertConformalConic.Reverse");
TransverseMercator c = new TransverseMercator(radius, f, 1.0);
c = new TransverseMercator();
c.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
c.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in TransverseMercator.Forward");
c.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
c.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
throw new Exception("Error in TransverseMercator.Reverse");
TransverseMercatorExact d = new TransverseMercatorExact(radius, f, 1.0, false);
d = new TransverseMercatorExact();
d.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
d.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in TransverseMercatorExact.Forward");
d.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
d.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
throw new Exception("Error in TransverseMercatorExact.Reverse");
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
MessageBox.Show("No errors detected", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
}