# network-accessibility-analysis

> Claude/Codex skill by [@muend](https://omgskills.com/library/muend/index.md) · 35 stars · Updated 2026-10-17

Always invoke for access to facilities or opportunities by walking, driving, cycling, or public transport, even for a conceptual question with no routing terms or data yet. Covers hospital and service access, transit/GTFS, routes, isochrones, OD matrices, closest facility, 2SFCA, walkability, coverage, and equity. Invoke when Euclidean buffers proxy for network access. Use movement-trajectory for observed tracks and MCDA for suitability without network costs.

Tags: agent-skills, ai, ai-agents, claude-code, codex, geoai, geospatial, gis, github-copilot, google-earth-engine, lidar, machine-learning, postgis, remote-sensing, spatial-analysis, spatial-data-science

## Install

```sh
git clone https://github.com/muend/geoai-skills /tmp/geoai-skills && ln -s /tmp/geoai-skills/skills/network-accessibility-analysis ~/.claude/skills/network-accessibility-analysis
```

## From README

Network & Accessibility Analysis Purpose: replace as-the-crow-flies guesswork with network-true travel costs, at the right scale and with honest assumptions about speeds and modes. First decision on every task: Euclidean distance is only acceptable as a declared approximation — flag it whenever you see it standing in for access. Tool selection by scale | Scale | Tool | |---|---| | Neighborhood-city, research flexibility | OSMnx + NetworkX | | City-region, many-to-many OD (\>10⁴×10⁴) | r5py (multimodal + transit w/ GTFS) or pandana (contraction-hierarchy speed) | | Production routing service | Valhalla / OSRM / OpenRouteService API | | Proprietary stacks | ArcGIS Network Analyst (script it headlessly) | NetworkX chokes on metro-scale many-to-many — don't loop shortestpath over thousands of origins; switch tools instead. Graph construction (OSMnx) networktype matters: pedestrian analysis on a drive graph misses paths, stairs, plazas; driving on all uses footpaths. Match mode.

## Links

- HTML page: https://omgskills.com/library/muend/geoai-skills/skills/network-accessibility-analysis/
- GitHub: https://github.com/muend/geoai-skills
- Author: [@muend](https://omgskills.com/library/muend/index.md)

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