{"id":13426115,"url":"https://github.com/graphhopper/isochrone-experiments","last_synced_at":"2025-07-14T20:35:48.352Z","repository":{"id":145211128,"uuid":"123102919","full_name":"graphhopper/isochrone-experiments","owner":"graphhopper","description":"Some experiments with isochrones","archived":false,"fork":false,"pushed_at":"2019-08-27T21:24:02.000Z","size":52335,"stargazers_count":7,"open_issues_count":0,"forks_count":4,"subscribers_count":4,"default_branch":"deckgl","last_synced_at":"2025-05-01T19:38:52.364Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"https://www.graphhopper.com/blog/2018/07/04/high-precision-reachability/","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/graphhopper.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null}},"created_at":"2018-02-27T09:09:55.000Z","updated_at":"2022-12-14T08:10:06.000Z","dependencies_parsed_at":"2024-02-03T09:01:34.002Z","dependency_job_id":null,"html_url":"https://github.com/graphhopper/isochrone-experiments","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/graphhopper/isochrone-experiments","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/graphhopper%2Fisochrone-experiments","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/graphhopper%2Fisochrone-experiments/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/graphhopper%2Fisochrone-experiments/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/graphhopper%2Fisochrone-experiments/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/graphhopper","download_url":"https://codeload.github.com/graphhopper/isochrone-experiments/tar.gz/refs/heads/deckgl","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/graphhopper%2Fisochrone-experiments/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":265344868,"owners_count":23750570,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-07-31T00:01:26.730Z","updated_at":"2025-07-14T20:35:48.318Z","avatar_url":"https://github.com/graphhopper.png","language":"JavaScript","funding_links":[],"categories":["JavaScript"],"sub_categories":[],"readme":"# Isochrone Experiments\n\nFor these [isochrone](https://en.wikipedia.org/wiki/Isochrone_map) experiments you need a modified GraphHopper core server:\n\n```bash\ngit clone https://github.com/graphhopper/graphhopper\ncd graphhopper\ngit checkout isochrone-edgelist\n./graphhopper.sh web your-area.pbf\n```\n\n# Update\n\nA similar endpoint /spt is now available in a stable release via gzipped CSV since 0.13 (not a binary format). See [this PR](https://github.com/graphhopper/graphhopper/pull/1577).\n\n## License\n\nThis project stands under the Apache License 2.0.\n\n## Deck.gl Usage\n\nThis version uses a binary edgelist returned from the customized graphhopper\nserver set up above.\n\n```bash\ngit clone https://github.com/graphhopper/isochrone-experiments\ncd isochrone-experiments\ngit checkout deckgl\ncd deckgl\n# deck.gl requires a not too old npm version, I installed 10.x via nvm, then do:\nnpm install\n# https://www.maptiler.com/cloud/\nexport Token=\u003cyour maptiler api key\u003e\nnpm start\n```\n\n![image](./deckgl/img/isochrone-example1.png)\n\n## Mapbox GL JS\n\nuses the native response via result=edgelist which is 5 times smaller (1) compared to the 'compact' JSON edge list\n(mapbox-json folder)\n\n```bash\ngit clone https://github.com/graphhopper/isochrone-experiments\ncd isochrone-experiments\ngit checkout deckgl\ncd mapbox-json\nnpx http-server\nhttp://127.0.0.1:8081/index.html?key=\u003cmapbox key\u003e\n```\n\n## Isochone as Vector Tile Source\n\nSee mvt folder and result=mvt\n\nToo many problems at the moment:\n\n * couldn't get it display the mvt (size is small but according to vtzero it\n   is a valid mvt)\n * it takes ages to create the mvt with the used Java lib (\u003e10sec)\n * mapbox fetches the vector tiles per tile resulting in multiple calls where we would just need one\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgraphhopper%2Fisochrone-experiments","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fgraphhopper%2Fisochrone-experiments","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgraphhopper%2Fisochrone-experiments/lists"}