abstreet/howto/new_city.html
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<ol class="chapter"><li class="chapter-item expanded "><a href="../index.html"><strong aria-hidden="true">1.</strong> Overview</a></li><li class="chapter-item expanded "><a href="../howto/index.html"><strong aria-hidden="true">2.</strong> Instructions</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../howto/dev.html"><strong aria-hidden="true">2.1.</strong> Developer guide</a></li><li class="chapter-item expanded "><a href="../howto/map_parking.html"><strong aria-hidden="true">2.2.</strong> How to map on-street parking</a></li><li class="chapter-item expanded "><a href="../howto/new_city.html" class="active"><strong aria-hidden="true">2.3.</strong> Importing a new city</a></li><li class="chapter-item expanded "><a href="../howto/misc_dev_tricks.html"><strong aria-hidden="true">2.4.</strong> Misc developer tricks</a></li></ol></li><li class="chapter-item expanded "><a href="../how_it_works.html"><strong aria-hidden="true">3.</strong> How it works</a></li><li class="chapter-item expanded "><a href="../map/index.html"><strong aria-hidden="true">4.</strong> Map model</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../map/importing/index.html"><strong aria-hidden="true">4.1.</strong> Importing</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../map/importing/convert_osm.html"><strong aria-hidden="true">4.1.1.</strong> convert_osm</a></li><li class="chapter-item expanded "><a href="../map/importing/geometry.html"><strong aria-hidden="true">4.1.2.</strong> Road/intersection geometry</a></li><li class="chapter-item expanded "><a href="../map/importing/rest.html"><strong aria-hidden="true">4.1.3.</strong> The rest</a></li></ol></li><li class="chapter-item expanded "><a href="../map/edits.html"><strong aria-hidden="true">4.2.</strong> Live edits</a></li><li class="chapter-item expanded "><a href="../map/misc.html"><strong aria-hidden="true">4.3.</strong> Misc</a></li></ol></li><li class="chapter-item expanded "><a href="../trafficsim/index.html"><strong aria-hidden="true">5.</strong> Traffic simulation</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../trafficsim/discrete_event.html"><strong aria-hidden="true">5.1.</strong> Discrete event simulation</a></li><li class="chapter-item expanded "><a href="../trafficsim/travel_demand.html"><strong aria-hidden="true">5.2.</strong> Travel demand</a></li><li class="chapter-item expanded "><a href="../trafficsim/gridlock.html"><strong aria-hidden="true">5.3.</strong> Gridlock</a></li></ol></li><li class="chapter-item expanded "><a href="../case_studies/index.html"><strong aria-hidden="true">6.</strong> Case studies</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../case_studies/lake_wash.html"><strong aria-hidden="true">6.1.</strong> Lake Washington Blvd Stay Healthy Street</a></li><li class="chapter-item expanded "><a href="../case_studies/west_seattle.html"><strong aria-hidden="true">6.2.</strong> West Seattle mitigations</a></li></ol></li><li class="chapter-item expanded "><a href="../api.html"><strong aria-hidden="true">7.</strong> API</a></li><li class="chapter-item expanded "><a href="../project/index.html"><strong aria-hidden="true">8.</strong> Project</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../project/roadmap.html"><strong aria-hidden="true">8.1.</strong> Roadmap</a></li><li class="chapter-item expanded "><a href="../project/motivations.html"><strong aria-hidden="true">8.2.</strong> Motivations</a></li><li class="chapter-item expanded "><a href="../project/history/index.html"><strong aria-hidden="true">8.3.</strong> History</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../project/history/backstory.html"><strong aria-hidden="true">8.3.1.</strong> Backstory</a></li><li class="chapter-item expanded "><a href="../project/history/year1.html"><strong aria-hidden="true">8.3.2.</strong> Year 1</a></li><li class="chapter-item expanded "><a href="../project/history/year2.html"><strong aria-hidden="true">8.3.3.</strong> Year 2</a></li><li class="chapter-item expanded "><a href="../project/history/year3.html"><strong aria-hidden="true">8.3.4.</strong> Year 3</a></li></ol></li><li class="chapter-item expanded "><a href="../project/CHANGELOG.html"><strong aria-hidden="true">8.4.</strong> Full CHANGELOG</a></li><li class="chapter-item expanded "><a href="../project/references.html"><strong aria-hidden="true">8.5.</strong> References</a></li></ol></li></ol>
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<h1><a class="header" href="#importing-a-new-city-into-ab-street" id="importing-a-new-city-into-ab-street">Importing a new city into A/B Street</a></h1>
<p>This process isn't easy yet. Please email <a href="mailto:dabreegster@gmail.com">dabreegster@gmail.com</a> or
<a href="https://github.com/dabreegster/abstreet/issues/">file a Github issue</a> if you
hit problems. I'd really appreciate help and PRs to improve this.</p>
<h2><a class="header" href="#quick-start" id="quick-start">Quick start</a></h2>
<p>Use this if you want to import a city on your computer without making it
available to other users yet.</p>
<ul>
<li>
<p>If you're using the <strong>binary release</strong> and have a <code>.osm</code> file, just do:
<code>./importer --oneshot=map.osm</code>.</p>
</li>
<li>
<p>If you're building <strong>from source</strong>, do: <code>./import.sh --oneshot=map.osm</code>. If
you can't run <code>import.sh</code>, make sure you have all
<a href="dev.html#building-map-data">dependencies</a>. If you're using Windows and the
console logs appear in a new window, try running the command from <code>import.sh</code>
directly, changing the <code>$@</code> at the end to <code>--oneshot=map.osm</code> or whatever
arguments you're passing in.</p>
</li>
</ul>
<p>The oneshot importer will will generate a new file in <code>data/system/maps</code> that
you can then load in the game. If you have an Osmosis polygon filter (see
below), you can also pass <code>--oneshot_clip=clip.poly</code> to improve the result. You
should first make sure your .osm has been clipped:
<code>osmconvert large_map.osm -B=clipping.poly --complete-ways -o=smaller_map.osm</code>.</p>
<p>You can also try <code>--oneshot_drive_on_left</code>, but you'll spot some bugs. Get in
touch if you need these fixed soon or want to help.</p>
<h3><a class="header" href="#how-to-get-osm-files" id="how-to-get-osm-files">How to get .osm files</a></h3>
<p>If the area is small enough, try the &quot;export&quot; tool on
https://www.openstreetmap.org. You can download larger areas from
https://download.bbbike.org/ or http://download.geofabrik.de/index.html, then
clip them to a smaller area. You can draw a clipping polygon using
http://geojson.io or https://geoman.io/geojson-editor. You have to turn the
coordinates from that polygon into the
<a href="https://wiki.openstreetmap.org/wiki/Osmosis/Polygon_Filter_File_Format">Osmosis format</a>.
The <code>data/geojson_to_osmosis.py</code> script can help with the formatting.</p>
<h2><a class="header" href="#including-the-city-to-ab-street-more-permanently" id="including-the-city-to-ab-street-more-permanently">Including the city to A/B street more permanently</a></h2>
<p>Follow this guide to add a new city to A/B street by default so other users can
use it as well.</p>
<ol>
<li>
<p>Make sure you can run <code>import.sh</code> -- see
<a href="dev.html#building-map-data">the instructions</a>. You'll need Rust, osmconvert,
gdal, etc.</p>
</li>
<li>
<p>Use <a href="http://geojson.io/">geojson.io</a> or
<a href="https://geoman.io/geojson-editor">geoman.io</a> to draw a polygon around the
region you want to simulate.</p>
</li>
<li>
<p>Create a new directory: <code>mkdir -p data/input/your_city/polygons</code></p>
</li>
<li>
<p>Create a
<a href="https://wiki.openstreetmap.org/wiki/Osmosis/Polygon_Filter_File_Format">polygon filter file</a>
in that directory using the coordinates from geojson.io. It's easiest to
start with an existing file from another directory; I recommend
<code>data/input/krakow/polygons/krakow_center.poly</code> as a guide. You can use
<code>data/geojson_to_osmosis.py</code> to help format the coordinates.</p>
</li>
<li>
<p>Create a new module in <code>importer/src/</code> for your city, copying
<code>importer/src/krakow.rs</code> as a guide. Edit that file in the obvious way. The
main thing you'll need is a .osm or .osm.pbf file to download that contains
your city. The clipping polygon will be applied to that.</p>
</li>
<li>
<p>Update <code>importer/src/main.rs</code> to reference your new module, following
<code>krakow</code> as an example.</p>
</li>
<li>
<p>Update <code>map_belongs_to_city</code> in <code>updater/src/main.rs</code></p>
</li>
<li>
<p>Run it: <code>./import.sh --city=your_city --raw --map</code></p>
</li>
<li>
<p>Update <code>.gitignore</code>, following <code>krakow</code> as an example.</p>
</li>
</ol>
<p>Send a PR with your changes! I'll generate everything and make it work with
<code>updater</code>, so most people don't have to build everything from scratch.</p>
<h2><a class="header" href="#next-steps" id="next-steps">Next steps</a></h2>
<p>OpenStreetMap isn't the only data source we need. If you look at the import
pipeline for Seattle, you'll see many more sources for parking, GTFS bus
schedules, person/trip demand data for scenarios, etc. Most of these aren't
standard between cities. If you want to make your city more realistic, we'll
have to import more data. Get in touch.</p>
<p>You may notice issues with OSM data while using A/B Street. Some of these are
bugs in A/B Street itself, but others are incorrectly tagged lanes. Some
resources for fixing OSM:</p>
<ul>
<li>https://learnosm.org</li>
<li>https://wiki.openstreetmap.org/wiki/StreetComplete</li>
<li>https://dabreegster.github.io/abstreet/map_parking.html</li>
</ul>
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