GENERATE_GRAPH.md

Fetch Environment Data

Not yet documented

Create Blended-Resolution Hex Graph

• Define Area of Interest (AOI) in process/config.py by adding to the AOIS array.
• Also set the desired COASTAL_SEA_RESOLUTION: 7 may be sufficient depending on use case, but does not (for example) allow for paths through narrow straits or harbour mouths.
• Set the required AOI index in process/sea_graph.py (for example, AOI = AOIS[0]), and then run the script.

Build Enriched Graph

• Set the required AOI index in process/graph_from_datasets.py, and then run the script.
• Unpacking the generated routing_graph.msgpack.gz takes too long in Firefox browsers, so split the graph into chunks for faster parallel loading and so as to be small enough to store on GitHub: set the required AOI index in process/split_json_graph.py, and then run the script.

Generate Map Tiles

• Set the required AOI index in process/generate_graph_tiles.py, and then run the script.