Package pygeodesy :: Module frechet :: Class FrechetExact |
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# Class FrechetExact

      object --+
               |
    named._Named --+
                   |
             Frechet --+
                       |
                      FrechetExact

Compute the `Frechet` distance based on the angular distance in `degrees` from method GeodesicExact`.Inverse`.

Instance Methods
__init__(self, point1s, fraction=None, name='', datum=None, **wrap) New FrechetExact calculator/interpolator. |
discrete(self, point2s, fraction=None) Compute the `forward, discrete Fréchet` distance. |
Inherited from `Frechet`: `distance`, `point`, `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`, `kwds`, `units`, `wrap` Inherited from `named._Named`: `classname`, `classnaming`, `iteration`, `name`, `named`, `named2`, `named3`, `named4`, `sizeof` Inherited from `object`: `__class__`

Method Details

### __init__ (self, point1s, fraction=None, name='', datum=None, **wrap) (Constructor) |
New FrechetExact calculator/interpolator. Arguments: `datum` - Datum to override the default `Datums.WGS84` and first `point1s`' datum (Datum, Ellipsoid, Ellipsoid2 or a_f2Tuple). `wrap` - Optional keyword argument for method `Inverse1` of class geodesicx.GeodesicExact. Raises: `TypeError` - Invalid `datum`. Overrides: object.__init__ See Also: Frechet.__init__ for details about `point1s`, `fraction`, `name` and other exceptions.

### discrete (self, point2s, fraction=None) |
Compute the `forward, discrete Fréchet` distance. Arguments: `point2s` - Second set of points (`LatLon`[], Numpy2LatLon[], Tuple2LatLon[] or `other`[]). `fraction` - Index fraction (`float` in EPS..EPS1) to interpolate intermediate `point2s` or use `None`, `0` or `1` for no intermediate `point2s` and no fractional indices. Returns: A Frechet6Tuple`(fd, fi1, fi2, r, n, units)`. Raises: `FrechetError` - Insufficient number of `point2s` or an invalid `point2` or `fraction`. `RecursionError` - Recursion depth exceeded, see sys.getrecursionlimit. Overrides: Frechet.discrete