Question 1

How do I use gtfs-to-geojson to create a transit map with Leaflet?

Accepted Answer

Install the library globally via npm, configure your GTFS source in config.json with outputFormat set to 'lines-and-stops', run the CLI, and load the generated GeoJSON into Leaflet using its L.geoJSON() layer. The README includes examples of output formats suitable for web mapping.

Question 2

gtfs-to-geojson or GTFS-to-HTML: which one should I use?

Accepted Answer

gtfs-to-geojson is for geographic data and maps, while GTFS-to-HTML generates timetable HTML. Choose based on whether you need spatial visualization or schedule displays; they are complementary tools from the same ecosystem, as mentioned in the README.

Question 3

How to handle memory issues with large GTFS files in gtfs-to-geojson?

Accepted Answer

Use the NODE_OPTIONS environment variable to increase memory allocation, as described in the 'Processing very large GTFS files' section. For example, run 'export NODE_OPTIONS="--max-old-space-size=30000"' before executing the command to allocate 30GB of memory.

Question 4

Can I convert GTFS to GeoJSON without installing Node.js?

Accepted Answer

Yes, use the web interface at geojson.gtfstohtml.com for quick, no-install conversions by uploading a GTFS zip or providing a URL. However, for automated, customized, or local processing, the Node.js CLI or library is required.

Question 5

What are the differences between output types like 'agency' and 'route' in gtfs-to-geojson?

Accepted Answer

OutputType 'agency' creates one GeoJSON file per agency with all routes combined, 'route' outputs per route and direction, and 'shape' per shape_id. This allows flexibility in data grouping for mapping or analysis, as explained in the configuration options.

Question 6

How to filter GTFS data by date range in gtfs-to-geojson?

Accepted Answer

Specify startDate and endDate in YYYYMMDD format in the config.json file to filter services based on calendar.txt. This ensures only routes active in that period are included in the GeoJSON, useful for temporal analysis or seasonal maps.

gtfs-to-geojson

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