private void OnSelectFile(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Geoid File (*.pgm)|*.pgm";
dlg.DefaultExt = "pgm";
dlg.Title = "Open Geoid File";
if (dlg.ShowDialog() == DialogResult.Cancel)
{
return;
}
m_path = dlg.FileName.Substring(0, dlg.FileName.LastIndexOf('\\')).Replace('\\', '/');
int length = dlg.FileName.LastIndexOf('.') - dlg.FileName.LastIndexOf('\\') - 1;
m_fileName = dlg.FileName.Substring(dlg.FileName.LastIndexOf('\\') + 1, length);
try
{
m_geoid = new Geoid(m_fileName, m_path, true, m_threadSafeCheckBox.Checked);
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
m_convertEllipsodButton.Enabled = m_convertGeoidButton.Enabled = m_heightButton.Enabled = m_validateButton.Enabled = true;
m_geoidFileNameTextBox.Text = dlg.FileName;
m_dateTimeTextBox.Text = m_geoid.DateTime;
m_descriptionTextBox.Text = m_geoid.Description;
m_majorRadiusTextBox.Text = m_geoid.EquatorialRadius.ToString();
m_flatteningTtextBox.Text = m_geoid.Flattening.ToString();
}
/// <summary>
/// troposphere mapping function
/// compute tropospheric mapping function by GMF or NMF or......
/// </summary>
/// <param name="time">time</param>
/// <param name="pos">receiver position {lat, lon, h} (rad, m)</param>
/// <param name="zael">azimuth/elevation angle {az, el} (rad)</param>
/// <param name="mapfw">wet mapping function (null : not output)</param>
/// <returns></returns>
public double tropmapf(Time time, GeoCoord pos, double[] azel, ref double mapfw)
{
Time ep = new Time(2000, 1, 1, 12);
Geoid geoid = new Geoid();
if (pos.Height < -1000.0 || pos.Height > 20000.0)
{
mapfw = 0.0;
return(0.0);
}
double mjd = 51544.5 + (double)(time - ep) / 86400.0;
double lat = pos.Lat * SunMoonPosition.DegToRad;
double lon = pos.Lon * SunMoonPosition.DegToRad;
double hgt = pos.Height - geoid.geoidh(pos);
double zd = SunMoonPosition.PI / 2.0 - azel[1];
double gmfh = 0.0, mapf = 0.0;
gmf(mjd, lat, lon, hgt, zd, ref gmfh, ref mapf);
mapfw = mapf;
return(gmfh);
}
public void Test_EvaluateWithoutCache(string c, double height)
{
using (var geoid = new Geoid("egm84-30",
Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "geoids")))
{
var coord = new GeoCoords(c);
var h = geoid.Evaluate(coord);
Assert.AreEqual(height, h, 1e-4);
}
}
public void Test_Load()
{
using (var geoid = new Geoid("egm84-30",
Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "geoids")))
{
Assert.AreEqual("WGS84 EGM84, 30-minute grid", geoid.Description);
Assert.AreEqual(DateTime.Parse("2009-08-29 18:45:02"), geoid.DateTime);
Assert.AreEqual(0.274, geoid.MaxError);
Assert.AreEqual(0.014, geoid.RMSError);
Assert.AreEqual(-108, geoid.Offset);
Assert.AreEqual(0.003, geoid.Scale);
}
}
static void Main(string[] args)
{
try {
Geoid egm96 = new Geoid("egm96-5", "", true, false);
// Convert height above egm96 to height above the ellipsoid
double lat = 42, lon = -75, height_above_geoid = 20;
double
geoid_height = egm96.Height(lat, lon),
height_above_ellipsoid = (height_above_geoid +
(double)Geoid.ConvertFlag.GEOIDTOELLIPSOID * geoid_height);
Console.WriteLine(height_above_ellipsoid);
}
catch (GeographicErr e) {
Console.WriteLine(String.Format("Caught exception: {0}", e.Message));
}
}
static void Main(string[] args)
{
try {
Geoid egm96 = new Geoid("egm96-5", "", true, false);
// Convert height above egm96 to height above the ellipsoid
double lat = 42, lon = -75, height_above_geoid = 20;
double
geoid_height = egm96.Height(lat, lon),
height_above_ellipsoid = (height_above_geoid +
(double)Geoid.ConvertFlag.GEOIDTOELLIPSOID * geoid_height);
Console.WriteLine(height_above_ellipsoid);
}
catch (GeographicErr e) {
Console.WriteLine(String.Format("Caught exception: {0}", e.Message));
}
}
private void OnValidate(object sender, EventArgs e)
{
try
{
Geoid g = new Geoid(m_fileName, m_path, false, false);
g.CacheArea(20.0, -30.0, 30.0, -20.0);
g.CacheAll();
double h2 = g.Height(32.0, -60.0);
g.ConvertHeight(32.0, -60.0, 100.0, Geoid.ConvertFlag.ELLIPSOIDTOGEOID);
MessageBox.Show("No errors detected", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void OnThreadSafe(object sender, EventArgs e)
{
if (m_geoidFileNameTextBox.Text.Length > 0)
{
try
{
m_geoid = new Geoid(m_fileName, m_path, true, m_threadSafeCheckBox.Checked);
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
m_cacheButton.Enabled = !m_threadSafeCheckBox.Checked;
m_northTextBox.ReadOnly = m_southTextBox.ReadOnly = m_eastTextBox.ReadOnly = m_westTextBox.ReadOnly = m_threadSafeCheckBox.Checked;
}
private void OnValidate(object sender, EventArgs e)
{
try
{
Geoid g = new Geoid(m_fileName, m_path, false, false);
g.CacheArea(20.0, -30.0, 30.0, -20.0);
g.CacheAll();
double gradx, grady;
double h1 = g.Height(32.0, -60.0, out gradx, out grady);
double h2 = g.Height(32.0, -60.0);
if (h1 != h2)
throw new Exception("Error in Geoid.Height");
g.ConvertHeight(32.0, -60.0, 100.0, Geoid.ConvertFlag.ELLIPSOIDTOGEOID);
MessageBox.Show("No errors detected", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void OnThreadSafe(object sender, EventArgs e)
{
if (m_geoidFileNameTextBox.Text.Length > 0)
{
try
{
m_geoid = new Geoid(m_fileName, m_path, true, m_threadSafeCheckBox.Checked);
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
m_cacheButton.Enabled = !m_threadSafeCheckBox.Checked;
m_northTextBox.ReadOnly = m_southTextBox.ReadOnly = m_eastTextBox.ReadOnly = m_westTextBox.ReadOnly = m_threadSafeCheckBox.Checked;
}
private void OnSelectFile(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Geoid File (*.pgm)|*.pgm";
dlg.DefaultExt = "pgm";
dlg.Title = "Open Geoid File";
if (dlg.ShowDialog() == DialogResult.Cancel) return;
m_path = dlg.FileName.Substring(0, dlg.FileName.LastIndexOf('\\')).Replace('\\', '/');
int length = dlg.FileName.LastIndexOf('.') - dlg.FileName.LastIndexOf('\\') - 1;
m_fileName = dlg.FileName.Substring(dlg.FileName.LastIndexOf('\\') + 1, length);
try
{
m_geoid = new Geoid(m_fileName, m_path, true, m_threadSafeCheckBox.Checked);
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
m_convertEllipsodButton.Enabled = m_convertGeoidButton.Enabled = m_heightButton.Enabled = m_validateButton.Enabled = true;
m_geoidFileNameTextBox.Text = dlg.FileName;
m_dateTimeTextBox.Text = m_geoid.DateTime;
m_descriptionTextBox.Text = m_geoid.Description;
m_majorRadiusTextBox.Text = m_geoid.MajorRadius.ToString();
m_flatteningTtextBox.Text = m_geoid.Flattening.ToString();
}