# SciTools/cartopy

Cartopy - a cartographic python library with matplotlib support

Repository: https://github.com/SciTools/cartopy
Canonical: https://ross.abutalabs.com/products/cartopy
Homepage: https://cartopy.readthedocs.io/
Language: Python
License: BSD-3-Clause
License Family: permissive
Topics: cartopy, matplotlib, python, geometry, maps, spatial, projections
Last push: 2026-08-12T00:03:16+00:00

## Health v2 (maintenance only)
Score: 70/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 17, longevity 100
- inputs: {"age_days": 5143, "days_push": 22, "days_rel": 397, "gap_med": 148.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1615, forks 398 (observed 2026-08-28T04:05:11.560368+00:00)

## What it is
Cartopy is a Python package for cartographic projections and map drawing, built on top of Matplotlib, Pyproj, and Shapely. It provides object-oriented projection definitions, coordinate transformations between projections, and vector data handling for geospatial visualization.

## Use cases
- draw maps with matplotlib in python
- plot data on a map with map projections
- transform coordinates between projections
- read shapefiles and plot polygons on a map
- create choropleth or geospatial visualizations
- add coastlines and country borders to plots
- visualize weather or climate data on a projected map

## When to choose
- you need publication-quality maps in Python with Matplotlib integration
- you work with geospatial vector data like shapefiles and need projection support
- you want object-oriented control over map projections and transformations

## When to avoid
- you need interactive web-based maps (use folium or leaflet instead)
- you need full GIS analysis capabilities rather than visualization (use geopandas or QGIS)
- your project does not use Matplotlib as its plotting backend

## Facets
- artifact type: library
- maturity: stable
- function: data-visualization, geospatial, image-processing
- domain: data-visualization, data-science, graphics
- platform: python, cross-platform
- tags: cartography, matplotlib, map-projections, shapefile, shapely, pyproj, gis, maps

## Member repositories
- SciTools/cartopy (main) score 70

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:11.560368+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:50:16.479685+00:00, confidence not recorded.
  - readme: https://github.com/SciTools/cartopy (fetched 2026-08-28T04:05:11.560368+00:00, sha 3cab2a66dde0)
  - registry_pypi: https://pypi.org/pypi/cartopy/json (fetched 2026-08-29T11:23:00.684148+00:00, sha 2f6006f2f9aa)
- Data as of 2026-08-30T08:39:29.467469+00:00.