Package pygeodesy :: Module frechet :: Class FrechetEquirectangular
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Class FrechetEquirectangular

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

Compute the Frechet distance based on the equirectangular distance in radians squared like function pygeodesy.equirectangular_.


See Also: FrechetCosineLaw, FrechetEuclidean, FrechetExact, FrechetFlatPolar, FrechetHaversine and FrechetVincentys.

Instance Methods
 
__init__(self, points, adjust=True, wrap=False, fraction=None, name='')
New FrechetEquirectangular calculator/interpolator.
 
discrete(self, points, fraction=None)
Compute the forward, discrete Fréchet distance.
 
distance(self, p1, p2)
Return the pygeodesy.equirectangular_ distance in radians squared.

Inherited from FrechetRadians: point

Inherited from Frechet: points_, points_fraction

Inherited from named._Named: __imatmul__, __matmul__, __repr__, __rmatmul__, __str__, attrs, classof, copy, dup, methodname, rename, 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, iteration, name, named, named2, named3, named4

Inherited from object: __class__

Method Details

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

 

New FrechetEquirectangular calculator/interpolator.

Arguments:
  • points - First set of points (LatLon[], Numpy2LatLon[], Tuple2LatLon[] or other[]).
  • adjust - Adjust the wrapped, unrolled longitudinal delta by the cosine of the mean latitude (bool).
  • wrap - Wrap and pygeodesy.unrollPI longitudes (bool).
  • fraction - Index fraction (float in EPS..EPS1) to interpolate intermediate points or use 0, 1 or None to avoid intermediate points and pygeodesy.fractional indices.
  • name - Optional calculator/interpolator name (str).
Raises:
  • FrechetError - Insufficient number of points or invalid adjust or seed.
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 pygeodesy.equirectangular_ distance in radians squared.

Overrides: Frechet.distance