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pygeodesy
Package pygeodesy :: Module azimuthal :: Class GnomonicGeodSolve
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Class GnomonicGeodSolve

  object --+                    
           |                    
named._Named --+                
               |                
named._NamedBase --+            
                   |            
      _AzimuthalBase --+        
                       |        
      _AzimuthalGeodesic --+    
                           |    
               _GnomonicBase --+
                               |
                              GnomonicGeodSolve

Azimuthal gnomonic projection, a Python version of Karney's C++ class Gnomonic, based on (exact) geodesic wrappers GeodesicSolve and GeodesicLineSolve and intended for testing purposes only.

See Also: GnomonicExact and module geodsolve.

Instance Methods
 
__init__(self, lat0, lon0, datum=Datum(name='WGS84', ellipsoid=Ellipsoids.WGS84, transform=Tran..., **name)
New azimuthal GnomonicGeodSolve projection.
 
forward(self, lat, lon, raiser=True, **name)
Convert an (ellipsoidal) geodetic location to azimuthal gnomonic east- and northing.
 
reverse(self, x, y, LatLon=None, **name_LatLon_kwds)
Convert an azimuthal gnomonic location to (ellipsoidal) geodetic lat- and longitude.

Inherited from _AzimuthalBase: reset, toRepr, toStr

Inherited from named._NamedBase: __repr__, __str__, others

Inherited from named._Named: __format__, __imatmul__, __matmul__, __rmatmul__, attrs, classof, copy, dup, methodname, rename, renamed, toStr2

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Properties
  geodesic
Get this projection's (exact) geodesic (GeodesicSolve).

Inherited from _AzimuthalBase: a, datum, equatoradius, f, flattening, lat0, latlon0, lon0, majoradius, radius

Inherited from named._Named: classname, classnaming, iteration, name, named, named2, named3, named4, sizeof, typename

Inherited from object: __class__

Method Details

__init__ (self, lat0, lon0, datum=Datum(name='WGS84', ellipsoid=Ellipsoids.WGS84, transform=Tran..., **name)
(Constructor)

 

New azimuthal GnomonicGeodSolve projection.

Arguments:
  • lat0 - Latitude of center point (degrees90).
  • lon0 - Longitude of center point (degrees180).
  • datum - Optional datum or ellipsoid (Datum, Ellipsoid, Ellipsoid2 or a_f2Tuple) or scalar earth radius (meter).
  • name - Optional name=NN for the projection (str).
Raises:
Overrides: object.__init__

forward (self, lat, lon, raiser=True, **name)

 

Convert an (ellipsoidal) geodetic location to azimuthal gnomonic east- and northing.

Arguments:
  • lat - Latitude of the location (degrees90).
  • lon - Longitude of the location (degrees180).
  • raiser - If False, do not throw an error if the location lies over the horizon (bool).
  • name - Optional name=NN for the location (str).
Returns:
An Azimuthal7Tuple(x, y, lat, lon, azimuth, scale, datum) with easting x and northing y in meter and lat and lon in degrees and azimuth clockwise from true North. The scale of the projection is 1 / reciprocal**2 in radial direction and 1 / reciprocal in the direction perpendicular to this. Both x and y will be NAN if the (geodetic) location lies over the horizon and raiser=False.
Raises:
  • AzimuthalError - Invalid lat, lon or the location lies over the horizon and raiser=True.
Overrides: _AzimuthalBase.forward

reverse (self, x, y, LatLon=None, **name_LatLon_kwds)

 

Convert an azimuthal gnomonic location to (ellipsoidal) geodetic lat- and longitude.

Arguments:
  • x - Easting of the location (meter).
  • y - Northing of the location (meter).
  • LatLon - Class to use (LatLon) or None.
  • name_LatLon_kwds - Optional name=NN for the location and optionally, additional LatLon keyword arguments, ignored if LatLon is None.
Returns:
The geodetic (LatLon) or if LatLon is None an Azimuthal7Tuple(x, y, lat, lon, azimuth, scale, datum).
Raises:
Overrides: _AzimuthalBase.reverse

Note: The lat will be in the range [-90..90] degrees and lon in the range [-180..180] degrees. The azimuth is clockwise from true North. The scale is 1 / reciprocal**2 in radial direction and 1 / reciprocal in the direction perpendicular to this.


Property Details

geodesic

Get this projection's (exact) geodesic (GeodesicSolve).

Get method:
geodesic(self) - Get this projection's (exact) geodesic (GeodesicSolve).
Set method:
_fset_error(inst, val) - Throws an AttributeError, always.
Delete Method:
_fdel(inst) - Zap the cached/memoized property value.

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