Standing up an OSM clone with GeoServer and CSS

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.

1. Standing up an OSM clone with GeoServer and CSS Ing. Andrea Aime GeoSolutions
2. 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.it FOSS4G 2019, August 26th/30th, Bucharest
3. What are we talking about?
4. This FOSS4G 2019, August 26th/30th, Bucharest
5. Or to be more precise, this FOSS4G 2019, August 26th/30th, Bucharest
6. So you have OSM in your home page • https://maps.geo- solutions.it/geoserver/osm/osm/gwc/service /wmts?request=GetCapabilities FOSS4G 2019, August 26th/30th, Bucharest
7. What's behind it? FOSS4G 2019, August 26th/30th, Bucharest { } GeoCSS Imposm3
8. Motivation and history
9. Several attempts on-line https://wiki.openstreetmap.org/wiki/OpenStr eetMap-in-a-Box https://github.com/melbsurfer/osm- geoserver-styles https://github.com/boundlessgeo/OSM/ FOSS4G 2019, August 26th/30th, Bucharest
10. Why start a new attempt FOSS4G 2019, August 26th/30th, Bucharest
11. Because it's hard FOSS4G 2019, August 26th/30th, Bucharest "We choose to clone OSM, not because it's easy, but because it's hard"
12. Going beyond the comfort zone FOSS4G 2019, August 26th/30th, Bucharest
13. Timeline FOSS4G 2019, August 26th/30th, Bucharest github.com/aaime/osm 2017
14. Timeline FOSS4G 2019, August 26th/30th, Bucharest github.com/geosolutions.it/maps.geo- solutions.it 2018
15. Timeline FOSS4G 2019, August 26th/30th, Bucharest github.com/geosolutions.it/maps.geo- solutions.it 2019
16. Choosing the "right" style
17. Which OSM-Bright? FOSS4G 2019, August 26th/30th, Bucharest • https://github.com/gravitystorm/openstreetm ap-carto
18. Other options FOSS4G 2019, August 26th/30th, Bucharest • https://github.com/mapbox/osm-bright • https://github.com/openmaptiles/osm- bright-gl-style
19. Side by side comparison FOSS4G 2019, August 26th/30th, Bucharest OSM MapBox OpenMapti les
20. Side by side comparison FOSS4G 2019, August 26th/30th, Bucharest OSM OpenMaptiles
21. Different objectives FOSS4G 2019, August 26th/30th, Bucharest
22. Consequences FOSS4G 2019, August 26th/30th, Bucharest
23. Challenges
24. Approach FOSS4G 2019, August 26th/30th, Bucharest
25. Issue: zoom vs scale FOSS4G 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;
26. Going from zoom to scale FOSS4G 2019, August 26th/30th, Bucharest 1 1:279.541.131 1:139.770.565 2 1:200.000.000
27. Going from zoom to scale FOSS4G 2019, August 26th/30th, Bucharest Level Scale denominator Middle cut Rounded mid cut 0 559.082.263,95 1 279.541.131,98 419.311.698 400.000.000 2 139.770.565,99 209.655.849 200.000.000 3 69.885.282,99 104.827.924 100.000.000 4 34.942.641,50 52.413.962 50.000.000 5 17.471.320,75 26.206.981 25.000.000 6 8.735.660,37 13.103.491 12.500.000 7 4.367.830,19 6.551.745 6.000.000 8 2.183.915,09 3.275.873 3.000.000 9 1.091.957,55 1.637.936 1.500.000 10 545.978,77 818.968 800.000 11 272.989,39 409.484 400.000 12 136.494,69 204.742 200.000 13 68.247,35 102.371 100.000 14 34.123,67 51.186 50.000 15 17.061,84 25.593 25.000 16 8.530,92 12.796 12.500 17 4.265,46 6.398 6.000 18 2.132,73 3.199 3.000 19 1.066,36 1.600 1.500 20 533,18 800 800 21 266,59 400 400 22 133,30 200 200 23 66,65 100 100
28. Issue: the editor is too small FOSS4G 2019, August 26th/30th, Bucharest
29. Solution: side by side fullscreen editor FOSS4G 2019, August 26th/30th, Bucharest
30. Issue: scale dependencies verbosity FOSS4G 2019, August 26th/30th, Bucharest [@sd <= 400k] { [feature = 'highway_motorway'] { stroke-width: 5; [@sd < 200k] { stroke-width: 5.5; } [zoom < 100k] {stroke-width: 7; } ….
31. Approach: use transform functions FOSS4G 2019, August 26th/30th, Bucharest [@sd < 400k] { ... stroke-width: categorize(@sd, 9, 50k, 7, 100k, 5.5, 200k, 5); }
32. Issue: SVG icons colorized at runtime FOSS4G 2019, August 26th/30th, Bucharest
33. Approach: SVGs as marks FOSS4G 2019, August 26th/30th, Bucharest [type = 'fast_food'][@sd < 6k] { mark: symbol('file://symbols/fast_food.svg'); mark-size: 10; :mark { fill: #734a08 }; };
34. Issue: CSS translation times FOSS4G 2019, August 26th/30th, Bucharest
35. First approach: profile and optimize FOSS4G 2019, August 26th/30th, Bucharest
36. Going flat FOSS4G 2019, August 26th/30th, Bucharest
37. Flat mode FOSS4G 2019, August 26th/30th, Bucharest
38. Map is nice, but really slow FOSS4G 2019, August 26th/30th, Bucharest
39. Pregeneralized for the win FOSS4G 2019, August 26th/30th, Bucharest <?xml version="1.0" encoding="UTF-8"?> <GeneralizationInfos dataSourceName="osm" dataSourceNameSpace="osm" version="1.0"> <!-- ROADS --> <GeneralizationInfo geomPropertyName="geometry" baseFeatureName="osm_roads" featureName="roads"> <Generalization geomPropertyName="geometry" featureName="osm_roads_gen0" distance="200"/> <Generalization geomPropertyName="geometry" featureName="osm_roads_gen1" distance="50"/> </GeneralizationInfo> </GeneralizationInfos>
40. Give me eyes on the target! FOSS4G 2019, August 26th/30th, Bucharest
41. Issues found, round one FOSS4G 2019, August 26th/30th, Bucharest
42. Issues found, round two FOSS4G 2019, August 26th/30th, Bucharest
43. And here we are! FOSS4G 2019, August 26th/30th, Bucharest
44. That's all folks FOSS4G 2019, August 26th/30th, Bucharest
45. That's all folks FOSS4G 2019, August 26th/30th, Bucharest Really, didn't you forget anything???
46. Aaah, yeah, the styles! FOSS4G 2019, August 26th/30th, Bucharest • https://github.com/geosolutions-it/osm- styles
47. That’s all folks! (for good this time) Questions? info@geo-solutions.it