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The Shapely User Manual# Author: Sean Gillies, <sean. gillies @ gmail. com> Version: 2.0.3. Date: Feb 16, 2024. Copyright: This work is licensed under a Creative Commons Attribution 3.0 United States License. Abstract: This document explains how to use the Shapely Python package for computational geometry. Introduction#
16 de feb. de 2024 · Project description. Manipulation and analysis of geometric objects in the Cartesian plane. Shapely is a BSD-licensed Python package for manipulation and analysis of planar geometric objects. It is using the widely deployed open-source geometry library GEOS (the engine of PostGIS, and a port of JTS ).
- Overview
- What is a ufunc?
- Multithreading
Manipulation and analysis of geometric objects in the Cartesian plane.
Shapely is a BSD-licensed Python package for manipulation and analysis of planar geometric objects. It is using the widely deployed open-source geometry library GEOS (the engine of PostGIS, and a port of JTS). Shapely wraps GEOS geometries and operations to provide both a feature rich Geometry interface for singular (scalar) geometries and higher-performance NumPy ufuncs for operations using arrays of geometries. Shapely is not primarily focused on data serialization formats or coordinate systems, but can be readily integrated with packages that are.
A universal function (or ufunc for short) is a function that operates on n-dimensional arrays on an element-by-element fashion and supports array broadcasting. The underlying for loops are implemented in C to reduce the overhead of the Python interpreter.
Shapely functions generally support multithreading by releasing the Global Interpreter Lock (GIL) during execution. Normally in Python, the GIL prevents multiple threads from computing at the same time. Shapely functions internally release this constraint so that the heavy lifting done by GEOS can be done in parallel, from a single Python process.
Shapely is a BSD-licensed Python package for manipulation and analysis of planar geometric objects. It is using the widely deployed open-source geometry library GEOS (the engine of PostGIS, and a port of JTS ). Shapely wraps GEOS geometries and operations to provide both a feature rich Geometry interface for singular (scalar) geometries and ...
Manipulation and analysis of geometric objects in the Cartesian plane. Shapely is a BSD-licensed Python package for manipulation and analysis of planar geometric objects. It is based on the widely deployed GEOS (the engine of PostGIS) and JTS (from which GEOS is ported) libraries.
Shapely - a library that allows manipulation and analysis of planar geometry objects. pip install shapely . Geopandas - a library that allows you to process shapefiles representing tabular data (like pandas), where every row is associated with a geometry .
Shapely version 2.0.0 is a major release featuring a complete refactor of the internals and new vectorized (element-wise) array operations providing considerable performance improvements. For a full changelog, see https://shapely.readthedocs.io/en/latest/release/2.x.html#version-2-0-0.
