Shapely

What it is

Shapely is a Python package for manipulation and analysis of geometric objects. It provides functionality for creating, manipulating, and analyzing planar geometric objects such as points, lines, polygons, and multi-part geometries.

Shapely stands out with its comprehensive set of geometric operations and spatial analysis capabilities, making it a powerful tool for developers working with geospatial data.

When it fits — and when it doesn’t

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

1. 01

   Limited support for geographic coordinate systems

   Shapely operates in a planar context and does not natively handle geographic projections or transformations, which can lead to inaccuracies with real-world geospatial data.

2. 02

   Performance limitations with large datasets

   Operations on very large geometries or extensive sets of geometries can be slow due to the computational complexity and lack of optimized algorithms for big data scenarios.

3. 03

   Documentation lacks depth in advanced use cases

   While basic usage is well-covered, detailed explanations and examples for complex operations or optimizations are sparse, making it difficult to leverage Shapely's full potential without deep exploration of the source code.

4. 04

   No built-in support for 3D geometries

   Shapely is designed for planar (2D) geometry and does not natively support operations on three-dimensional objects, limiting its use in applications requiring z-coordinates.

What it does well

• Creation and manipulation of geometric objects in the Cartesian plane.

• Support for planar geometric operations such as union, intersection, difference, and symmetric difference.

• Comprehensive spatial analysis capabilities including area calculation, distance measurement, and boundary determination.

Pricing

Free tier

YesOpen source — free to use

Paid from

$0

Model

Flat rate

Enterprise plan

No

Pricing not independently confirmed — check the vendor’s page.