Package pygeodesy :: Module frechet :: Class FrechetVincentys
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Class FrechetVincentys

  object --+            
           |            
named._Named --+        
               |        
         Frechet --+    
                   |    
      FrechetRadians --+
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                      FrechetVincentys

Compute the Frechet distance based on the angular distance in radians from function vincentys_.


See Also: FrechetCosineLaw, FrechetEquirectangular, FrechetEuclidean, FrechetFlatPolar and FrechetHaversine.

Note: See note at function vincentys_.

Instance Methods
 
__init__(self, points, wrap=False, fraction=None, name='')
New FrechetVincentys calculator/interpolator.
 
discrete(self, points, fraction=None)
Compute the forward, discrete Fréchet distance.
 
distance(self, p1, p2)
Return the vincentys_ distance in radians.

Inherited from FrechetRadians: point

Inherited from Frechet: points_, points_fraction

Inherited from named._Named: __repr__, __str__, _dot_, attrs, classof, copy, toRepr, toStr, toStr2

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

Properties

Inherited from Frechet: adjust, datum, fraction, units, wrap

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

Inherited from object: __class__

Method Details

__init__ (self, points, wrap=False, fraction=None, name='')
(Constructor)

 

New FrechetVincentys calculator/interpolator.

Arguments:
  • points - First set of points (LatLon[], Numpy2LatLon[], Tuple2LatLon[] or other[]).
  • wrap - Wrap and unrollPI longitudes (bool).
  • fraction - Index fraction (float in EPS..EPS1) to interpolate intermediate points or use None, 0 or 1 for no intermediate points and no fractional indices.
  • name - Optional calculator/interpolator name (str).
Raises:
  • FrechetError - Insufficient number of points or invalid fraction.
Overrides: object.__init__

discrete (self, points, fraction=None)

 

Compute the forward, discrete Fréchet distance.

Arguments:
  • points - Second set of points (LatLon[], Numpy2LatLon[], Tuple2LatLon[] or other[]).
  • fraction - Index fraction (float in EPS..EPS1) to interpolate intermediate points or use None, 0 or 1 for no intermediate points and no fractional indices.
Returns:
A Frechet6Tuple(fd, fi1, fi2, r, n, units).
Raises:
Overrides: Frechet.discrete

distance (self, p1, p2)

 

Return the vincentys_ distance in radians.

Overrides: Frechet.distance