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changed readme to reflect OsmChange file

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Ben Varick 2025-02-01 20:46:23 -06:00
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@ -35,13 +35,11 @@ calculates the walking routes using OSRM.
- `make cycle-brouter` will run *cycling_route_analysis_brouter.Rmd* which calculates the biking routes using brouter.
## What-if analysis
This allows you to make changes to the street network (add a bike path, reduce a lane on an arterial st) and see how it affects the routes that brouter chooses.
This is currently not working, I'm trying to figure it out.
This allows you to make changes to the street network (add a bike path, reduce a lane on an arterial street) and see how it affects the routes that brouter chooses.
This is a multi-step process:
1. Make edits to OpenStreetMap in [JOSM](https://josm.openstreetmap.de/)
2. Save the edited map as `docker/brouter/osm_edit/map_edited.osm` (File -> Save As). Don't upload your hypothetical infrastructure to OpenStreetMap!
1. Generate an OsmChange file for the changes that you want to analyze. Don't upload your hypothetical infrastructure to OpenStreetMap!
2. Save that file as `docker/brouter/osm_edit/changes.osc`.
3. `make osm_edit_refresh_base` will download a fresh copy of `wisconsin-latest.osm.pbf` and the elevation tiles for Wisconsin. You don't need to run this frequently.
4. `make osm_edit_generate_pbf` will take those edits and apply them to the `wisconsin-latest.osm.pbf` and generate `wisconsin-latest_edited.osm.pbf`
5. `make osm_edit_generate_brouter` will generate new brouter segment files from the edited pbf file.