Subway Preprocessor and Validator

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Alexey Zakharenkov 53791838de [render] Syncronize URL hash with selected city		2020-08-24 22:41:53 +05:00
checkers	Take into account that two route itineraries may have the same stop sequence and differ only by interval	2020-08-21 19:02:48 +03:00
processors	Check for station displacement during recovery station order	2019-04-25 15:24:17 +03:00
render	[render] Syncronize URL hash with selected city	2020-08-24 22:41:53 +05:00
scripts	osmupdate tool returns 0 code on some kind of failures, so analyze its stderr to avoid proceeding with corrupted planet	2019-07-26 10:54:58 +03:00
stop_areas	Fix a small error in make_tram_areas	2018-08-01 21:47:51 +03:00
.gitignore	Initial version of subway render with leaflet js library	2019-06-18 19:22:26 +03:00
css_colours.py	Resolving CSS colours	2017-11-01 11:48:45 +03:00
LICENSE	Initial commit	2017-10-04 15:58:58 +03:00
process_subways.py	Calculate all relation centers also for overpass-originated data	2020-08-21 19:02:48 +03:00
README.md	Amend readme	2019-06-06 16:14:33 +03:00
subway_io.py	Calculate all relation centers also for overpass-originated data	2020-08-21 19:02:48 +03:00
subway_structure.py	Recursively calculate centers of all relations	2020-08-21 19:02:48 +03:00
v2h_templates.py	Link to metro map beside each city name	2020-08-24 22:41:53 +05:00
validation_to_html.py	Fix regular expression to not recognize substring n23 in strings like 'Train23B' as reference to OSM node	2019-06-10 16:44:50 +03:00

README.md

Subway Preprocessor

Here you see a list of scripts that can be used for preprocessing all the metro systems in the world from OpenStreetMap. subway_structure.py produces a list of disjunct systems that can be used for routing and for displaying of metro maps.

How To Validate

Choose transport data source:
1. Download or update a planet file in o5m format (using osmconvert and osmupdate). Run osmfilter to extract a portion of data for all subways. Or
2. If you don't specify --xml or --source option to the process_subways.py script it tries to fetch data over Overpass API. Not suitable for whole planet or large countries.
Run process_subways.py with appropriate set of command line arguments to build metro structures and receive a validation log.
Run validation_to_html.py on that log to create readable HTML tables.

Validation Script

There is a process_subways.sh in the scripts directory. The author uses it for updating both the planet and a city he's working on. Here is an example of a script for updating the London Underground network:

PLANET_PATH=$HOME/osm/planet
export OSMCTOOLS="$PLANET_PATH"
export PLANET="$PLANET_PATH/london.o5m"
export HTML_DIR=tmp_html
export BBOX=-0.681152,51.286758,0.334015,51.740636
export CITY="London"
export DUMP=london.yaml

scripts/process_subways.sh

The bounding box can be found in the Google Spreadsheet.

This can be simplified by using the build_city.sh script, which fetches the bbox from the web:

scripts/build_city.sh london.o5m London

Daily updates of validation results are available at this website.

Adding Stop Areas To OSM

To quickly add stop_area relations for the entire city, use the make_stop_areas.py script from the stop_area directory. Give it a bounding box or a .json file download from Overpass API. It would produce an JOSM XML file that you should manually check in JOSM. After that just upload it.

Author and License

All scripts were written by Ilya Zverev for MAPS.ME. Published under Apache Licence 2.0.