Shapely

https://shapely.readthedocs.io

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Shapely is a BSD-licensed Python package for manipulation and analysis of planar geometric objects...

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### Install Shapely

Source: https://shapely.readthedocs.io

Commands for installing the package via pip or conda.

```bash
$ pip install shapely
# or using conda
$ conda install shapely --channel conda-forge
```

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### Create and Buffer a Point

Source: https://shapely.readthedocs.io

Demonstrates the scalar Geometry interface by creating a point and buffering it to create a circular patch.

```python
>>> from shapely import Point
>>> patch = Point(0.0, 0.0).buffer(10.0)
>>> patch
<POLYGON ((10 0, 9.952 -0.98, 9.808 -1.951, 9.569 -2.903, 9.239 -3.827, 8.81...>>
>>> patch.area
313.6548490545941
```

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### Serialize and Deserialize WKT

Source: https://shapely.readthedocs.io

Converts between Well-Known Text (WKT) strings and Shapely geometry objects.

```python
>>> from shapely.wkt import dumps, loads
>>> dumps(loads('POINT (0 0)'))
'POINT (0.0000000000000000 0.0000000000000000)'
```

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### Integrate with GeoJSON

Source: https://shapely.readthedocs.io

Converts between Shapely geometries and GeoJSON-like dictionaries.

```python
>>> import json
>>> from shapely.geometry import mapping, shape
>>> s = shape(json.loads('{"type": "Point", "coordinates": [0.0, 0.0]}'))
>>> s
<POINT (0 0)>
>>> print(json.dumps(mapping(s)))
{"type": "Point", "coordinates": [0.0, 0.0]}
```

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### Vectorized Geometry Operations

Source: https://shapely.readthedocs.io

Uses the ufunc interface to perform operations on an array of points against a polygon.

```python
>>> import shapely
>>> import numpy as np
>>> geoms = np.array([Point(0, 0), Point(1, 1), Point(2, 2)])
>>> polygon = shapely.box(0, 0, 2, 2)

>>> shapely.contains(polygon, geoms)
array([False,  True, False])
```

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