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63 lines
2.4 KiB
Markdown
63 lines
2.4 KiB
Markdown
# Subway layer generation
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For the subway layer to be available in Organic Maps, a `SUBWAY_URL`
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parameter ought to be provided to the
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[map generator](https://github.com/organicmaps/organicmaps/tree/master/tools/python/maps_generator).
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Normally you can specify this link https://cdn.organicmaps.app/subway.json,
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which provides a regularly updated file.
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These instructions describe how to manually build a subway layer file.
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Japan is used as target country but any other region from one city to the
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whole planet is also applicable.
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1. Make sure you have an \*.o5m file with the region. As an option, you can
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download the region in \*.osm.pbf format and convert it to \*.o5m:
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```bash
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wget https://download.geofabrik.de/asia/japan-latest.osm.pbf
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osmconvert japan-latest.osm.pbf -o=japan.o5m --drop-version
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```
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If you already have some not too outdated \*.o5m version, it is enough
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because the subway generation script will update it with `osmupdate`.
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1. With the [Organic Maps subways](https://github.com/organicmaps/subways) repository deployed,
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run `scripts/process_subways.sh` bash script or prepare your own script
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which launches `process_subways.py` and `validation_to_html.py` scripts
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with suitable options.
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1. Analyse the HTML output obtained at the previous step. Broken transport
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networks won't be included into the map.
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1. Run `tools/python/transit/transit_graph_generator.py` from the repository root.
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The last three steps may be expressed as the following shell script:
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```bash
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#!/bin/bash
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set -e
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REPO="/path/to/cloned/repo"
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export PLANET="/path/to/japan.o5m"
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export OSMCTOOLS="/path/to/osmctools/dir"
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export HTML_DIR="/generated/html/target/dir"
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export PYTHON=python36
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export TMPDIR="/tmp"
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# Set non-empty string for the script to update validator code from git repository
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export GIT_PULL=
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export JSON=$TMPDIR/omaps_osm_subways.json
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# Set DUMP variable if YAML files needed.
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#export DUMP="$HTML_DIR"
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# Put city/country name to CITY variable if not all networks needed.
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# The default source of available cities/countries you may find at subways repository README.
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#export CITY="Germany"
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bash -x "$REPO/subways/scripts/process_subways.sh"
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TRANSIT_MAPS=${JSON%".json"}.transit.json
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cd "$REPO/tools/python/transit"
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"$PYTHON" transit_graph_generator.py "$JSON" "$TRANSIT_MAPS"
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```
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It is the `$TRANSIT_MAPS` file that can be fed to the map generator via `SUBWAY_URL` parameter.
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