Merge pull request #21 from bvarick/whatif

Adds what-if data processing

Makefile

@@ -43,3 +43,17 @@ brouter-data:
 	cd ./docker/brouter/brouter-web; cp keys.template.js keys.js;
 	cd ./docker/brouter/brouter-web; cp config.template.js config.js
 	cd ./docker/brouter; docker compose build
+
+osm_edit_refresh_base:
+	cd ./docker/brouter/osm_edit; wget https://download.geofabrik.de/north-america/us/wisconsin-latest.osm.pbf -O ./pbf_files/wisconsin-latest.osm.pbf
+	cd ./docker/brouter/osm_edit/srtm3/; wget -i srtm_tiles.csv -P ./
+
+osm_edit_generate_pbf:
+	cd ./docker/brouter/; docker run -v ./osm_edit:/osm_edit ghcr.io/bvarick/osmium-tool:2.21.0 osmium apply-changes /osm_edit/pbf_files/wisconsin-latest.osm.pbf /osm_edit/changes.osc -o /osm_edit/pbf_files/wisconsin-latest_edited.osm.pbf --overwrite
+
+osm_edit_generate_brouter:
+	docker run --rm --user "$(id -u):$(id -g)" --env PLANET=wisconsin-latest_edited.osm.pbf --env JAVA_OPTS="-Xmx2048M -Xms2048M -Xmn256M" --env PLANET_UPDATE=0 --volume ./docker/brouter/osm_edit/brouter-tmp:/brouter-tmp --volume ./docker/brouter/osm_edit/pbf_files:/planet --volume ./docker/brouter/osm_edit/srtm3:/srtm3:ro --volume ./docker/brouter/osm_edit/segments:/segments ghcr.io/mjaschen/brouter-routingdata-builder
+
+osm_edit_brouter_containers:
+	cd ./docker/brouter/osm_edit; docker compose up -d
+

README.md

@@ -34,6 +34,17 @@ calculates the walking routes using OSRM.
 - `make cycle-osrm` will run *cycling_route_analysis.Rmd* which calculates the biking 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 street) and see how it affects the routes that brouter chooses.
+
+This is a multi-step process:
+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.
+6. `make osm_edit_brouter_containers` starts the brouter backend and frontend using your newly created segment files with the edits you made. You can access the webui at http://127.0.0.1:8080
+
 ## Misc.
 - [Bike Level of Traffic Stress (LTS)](https://www.dvrpc.org/webmaps/bike-lts/analysis/)
 

docker/brouter/.gitignore

@@ -9,5 +9,6 @@
 # Except docker-compose.yml
 !docker-compose.yml
 
-# Except safety profiles
+# Except osm_edit
-!safety.brf
+!osm_edit/
+!mapcreation/*

docker/brouter/osm_edit/.gitignore

@@ -0,0 +1,12 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore
+
+# Except osm_edit directories
+!pbf_files/
+!srtm3/
+!brouter-tmp/
+!segments/
+
+!docker-compose.yml

docker/brouter/osm_edit/brouter-tmp/.gitignore

@@ -0,0 +1,5 @@
+# Ignore everything in this directory
+*
+
+# Except this file
+!.gitignore

docker/brouter/osm_edit/docker-compose.yml

@@ -0,0 +1,26 @@
+---
+services:
+    brouter:
+        container_name: brouter
+        ports:
+            - 17777:17777
+        volumes:
+            - ./segments:/segments4
+        image: brouter
+        build:
+            context: ../brouter
+            dockerfile: Dockerfile
+---
+services:
+    brouter-web:
+        container_name: brouter-web
+        ports:
+            - 127.0.0.1:8080:80
+        volumes:
+            - ../brouter-web/config.js:/usr/share/nginx/html/config.js
+            - ../brouter-web/keys.js:/usr/share/nginx/html/keys.js
+            - ../brouter-web/profiles:/usr/share/nginx/html/profiles
+        image: brouter-web
+        build:
+            context: ../brouter-web
+            dockerfile: Dockerfile

docker/brouter/osm_edit/pbf_files/.gitignore

@@ -0,0 +1,5 @@
+# Ignore everything in this directory
+*
+
+# Except this file
+!.gitignore

docker/brouter/osm_edit/segments/.gitignore

@@ -0,0 +1,5 @@
+# Ignore everything in this directory
+*
+
+# Except this file
+!.gitignore

docker/brouter/osm_edit/srtm3/.gitignore

@@ -0,0 +1,8 @@
+# Ignore everything in this directory
+*
+
+# Except this file
+!.gitignore
+
+# Except srtm_tiles.csv
+!srtm_tiles.csv

docker/brouter/osm_edit/srtm3/srtm_tiles.csv

@@ -0,0 +1,4 @@
+https://srtm.csi.cgiar.org/wp-content/uploads/files/srtm_5x5/ASCII/srtm_18_03.zip
+https://srtm.csi.cgiar.org/wp-content/uploads/files/srtm_5x5/ASCII/srtm_18_04.zip
+https://srtm.csi.cgiar.org/wp-content/uploads/files/srtm_5x5/ASCII/srtm_19_03.zip
+https://srtm.csi.cgiar.org/wp-content/uploads/files/srtm_5x5/ASCII/srtm_19_04.zip