This presentation cover the work done by GeoSolutions to create an OSM clone using GeoServer and GeoCSS styling.
Notice that the underlying styling has been released during this presentation.
Standing up an OSMclone with GeoServer and CSSIng. Andrea AimeGeoSolutions
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GeoSolutions⚫Italian SME⚫Expertise• Image Processing, GeoSpatial Data Fusion• Java, Java Enterprise, C++, Python• JPEG2000, JPIP, Advanced 2D visualization⚫Supporting/Developing FOSS4G projects⚫GeoServer, MapStore⚫GeoNetwork, GeoNode, Ckan⚫Clients⚫Public Agencies⚫Private Companies⚫http://www.geo-solutions.itFOSS4G 2019, August 26th/30th, Bucharest
What are we talking about?
ThisFOSS4G 2019, August 26th/30th, Bucharest
Or to be more precise, thisFOSS4G 2019, August 26th/30th, Bucharest
So you have OSM in your home page• https://maps.geo-solutions.it/geoserver/osm/osm/gwc/service/wmts?request=GetCapabilitiesFOSS4G 2019, August 26th/30th, Bucharest
What's behind it?FOSS4G 2019, August 26th/30th, Bucharest{ }GeoCSSImposm3
Motivation and history
Several attempts on-linehttps://wiki.openstreetmap.org/wiki/OpenStreetMap-in-a-Boxhttps://github.com/melbsurfer/osm-geoserver-styleshttps://github.com/boundlessgeo/OSM/FOSS4G 2019, August 26th/30th, Bucharest
Why start a new attemptFOSS4G 2019, August 26th/30th, Bucharest
Because it's hardFOSS4G 2019, August 26th/30th, Bucharest"We choose toclone OSM, notbecause it's easy,but because it'shard"
Going beyond the comfort zoneFOSS4G 2019, August 26th/30th, Bucharest
TimelineFOSS4G 2019, August 26th/30th, Bucharestgithub.com/aaime/osm2017
TimelineFOSS4G 2019, August 26th/30th, Bucharestgithub.com/geosolutions.it/maps.geo-solutions.it2018
TimelineFOSS4G 2019, August 26th/30th, Bucharestgithub.com/geosolutions.it/maps.geo-solutions.it2019
Choosing the "right" style
Which OSM-Bright?FOSS4G 2019, August 26th/30th, Bucharest• https://github.com/gravitystorm/openstreetmap-carto
Other optionsFOSS4G 2019, August 26th/30th, Bucharest• https://github.com/mapbox/osm-bright• https://github.com/openmaptiles/osm-bright-gl-style
Side by side comparisonFOSS4G 2019, August 26th/30th, BucharestOSM MapBoxOpenMaptiles
Side by side comparisonFOSS4G 2019, August 26th/30th, BucharestOSMOpenMaptiles
Different objectivesFOSS4G 2019, August 26th/30th, Bucharest
ConsequencesFOSS4G 2019, August 26th/30th, Bucharest
Challenges
ApproachFOSS4G 2019, August 26th/30th, Bucharest
Issue: zoom vs scaleFOSS4G 2019, August 26th/30th, Bucharest#roads-casing, #bridges, #tunnels {::casing {[zoom >= 12] {[feature = 'highway_motorway'] {line-width: @motorway-width-z12;[zoom >= 13] { line-width: @motorway-width-z13; }[zoom >= 15] { line-width: @motorway-width-z15; }[zoom >= 17] { line-width: @motorway-width-z17; }[zoom >= 18] { line-width: @motorway-width-z18; }[zoom >= 19] { line-width: @motorway-width-z19; }[zoom >= 20] { line-width: @motorway-width-z20; }[link = 'yes'] {line-width: @motorway-link-width-z12;
Going from zoom to scaleFOSS4G 2019, August 26th/30th, Bucharest1 1:279.541.1311:139.770.56521:200.000.000
Going from zoom to scaleFOSS4G 2019, August 26th/30th, BucharestLevel Scale denominator Middle cut Rounded mid cut0 559.082.263,951 279.541.131,98 419.311.698 400.000.0002 139.770.565,99 209.655.849 200.000.0003 69.885.282,99 104.827.924 100.000.0004 34.942.641,50 52.413.962 50.000.0005 17.471.320,75 26.206.981 25.000.0006 8.735.660,37 13.103.491 12.500.0007 4.367.830,19 6.551.745 6.000.0008 2.183.915,09 3.275.873 3.000.0009 1.091.957,55 1.637.936 1.500.00010 545.978,77 818.968 800.00011 272.989,39 409.484 400.00012 136.494,69 204.742 200.00013 68.247,35 102.371 100.00014 34.123,67 51.186 50.00015 17.061,84 25.593 25.00016 8.530,92 12.796 12.50017 4.265,46 6.398 6.00018 2.132,73 3.199 3.00019 1.066,36 1.600 1.50020 533,18 800 80021 266,59 400 40022 133,30 200 20023 66,65 100 100
Issue: the editor is too smallFOSS4G 2019, August 26th/30th, Bucharest
Solution: side by side fullscreen editorFOSS4G 2019, August 26th/30th, Bucharest
Issue: scale dependencies verbosityFOSS4G 2019, August 26th/30th, Bucharest[@sd <= 400k] {[feature = 'highway_motorway'] {stroke-width: 5;[@sd < 200k] { stroke-width: 5.5; }[zoom < 100k] {stroke-width: 7; }….
Approach: use transform functionsFOSS4G 2019, August 26th/30th, Bucharest[@sd < 400k] {...stroke-width:categorize(@sd,9, 50k,7, 100k,5.5, 200k,5);}
Issue: SVG icons colorized at runtimeFOSS4G 2019, August 26th/30th, Bucharest
Approach: SVGs as marksFOSS4G 2019, August 26th/30th, Bucharest[type = 'fast_food'][@sd < 6k] {mark: symbol('file://symbols/fast_food.svg');mark-size: 10;:mark { fill: #734a08 };};
Issue: CSS translation timesFOSS4G 2019, August 26th/30th, Bucharest
First approach: profile and optimizeFOSS4G 2019, August 26th/30th, Bucharest
Going flatFOSS4G 2019, August 26th/30th, Bucharest
Flat modeFOSS4G 2019, August 26th/30th, Bucharest
Map is nice, but really slowFOSS4G 2019, August 26th/30th, Bucharest
Pregeneralized for the winFOSS4G 2019, August 26th/30th, BucharestdataSourceNameSpace="osm" version="1.0">baseFeatureName="osm_roads"featureName="roads">featureName="osm_roads_gen0"distance="200"/>featureName="osm_roads_gen1"distance="50"/>
Give me eyes on the target!FOSS4G 2019, August 26th/30th, Bucharest
Issues found, round oneFOSS4G 2019, August 26th/30th, Bucharest
Issues found, round twoFOSS4G 2019, August 26th/30th, Bucharest
And here we are!FOSS4G 2019, August 26th/30th, Bucharest
That's all folksFOSS4G 2019, August 26th/30th, Bucharest
That's all folksFOSS4G 2019, August 26th/30th, BucharestReally, didn't you forget anything???
Aaah, yeah, the styles!FOSS4G 2019, August 26th/30th, Bucharest• https://github.com/geosolutions-it/osm-styles
That’s all folks! (for good this time)Questions?[email protected]
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