Package pygeodesy :: Module simplify :: Class Numpy2points

Class Numpy2points

object --+
         |
        Numpy2points

Wrapper for NumPy arrays as "on-the-fly" LatLon points.

Instance Methods

__init__(self, array, lat=1, lon=0)
Handle a NumPy array as simplify...-compatible LatLon points.

__getitem__(self, index)
Return row[index] as LatLon or return a Numpy2points slice.

__iter__(self)
Iterate thru all rows and yield each as LatLon.

__len__(self)
Return the number of rows.

__repr__(self)
Return a string representation.

__str__(self)
Return a string representation.

subset(self, indices)
Return a sub-set of the NumPy array.

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

Properties
	lat Get the latitudes column index.
	lon Get the longitudes column index.
	shape Get the shape of the NumPy array.
Inherited from `object`: `__class__`

Method Details

init(self, array, lat=1, lon=0)
(Constructor)

Handle a NumPy array as simplify...-compatible LatLon points.

Parameters:

array - NumPy array (numpy.array).
lat - index of the latitudes column (integer).
lon - index of the longitudes column (integer).

Raises:

IndexError - If array.shape is not (1+, 2+).
TypeError - If array is not a NumPy array.
ValueError - If the lat or lon value(s) are out of range or the same.

Overrides: object.__init__

Example:

>>> type(array)
<type 'numpy.ndarray'>  # <class ...> in Python 3+
>>> points = Numpy2points(array, lat=0, lon=1)
>>> simply = simplifyRDP(points, ...)
>>> type(simply)
<type 'numpy.ndarray'>  # <class ...> in Python 3+
>>> sliced = points[1:-1]
>>> type(sliced)
<class '...Numpy2points'>

repr(self)
(Representation operator)

Return a string representation.

Overrides: object.__repr__

str(self)
(Informal representation operator)

Return a string representation.

Overrides: object.__str__

Property Details

lat

Get the latitudes column index.

Get Method:: lat(self) - Get the latitudes column index.

lon

Get the longitudes column index.

Get Method:: lon(self) - Get the longitudes column index.

shape

Get the shape of the NumPy array.

Get Method:: shape(self) - Get the shape of the NumPy array.

Class Numpy2points

__init__(self, array, lat=1, lon=0) (Constructor)

__repr__(self) (Representation operator)

__str__(self) (Informal representation operator)

lat

lon

shape

init(self, array, lat=1, lon=0)
(Constructor)

repr(self)
(Representation operator)

str(self)
(Informal representation operator)