I got intrested in OpenStreetMap just becuase I was in the lookout for tools to create course guides for my local Golf Club. I found the project that is OpenStreetMap during the summer of and after that got intrested in all things that is those "new" crisp vector maps. I also found that previous work have been done in documenting a tagging schema for golf features in OpenStreetMap during the years: https://wiki.openstreetmap.org/wiki/Tag:leisure%3Dgolf_course During the development and feedback on the Tool Fairwaymapper - https://community.openstreetmap.org/t/fairwaymapper-introducing-golfers-to-mapping/142814 I updated the tagging schema to allow to represent multiple courses on a golf course facility with route=golf relations.
Seeing that the project fairwaymapper went well I got inspired to actually create a vector layor schema for golf features and export vector tiles of only all features inside of all (multi)polygons that is leisure=golf_course around the world. Many applications could then use these tiles in free and open source golf apps.
It will be intresting to document and estimate how much memory, compute and storage it will take to procces all the golf data in the osm database.
My plan is to devlop a Vector schema/style and a collection of tools and instructions how to generate your own golf centric golf tiles.
Maybe if the cost is not to big I would then also host the PMtiles on Cloudflare R2 S3 bucket through my hugge.se domain.
My plan is to produce PMtiles to avoid having to run a tile server to reduce cost.
- Question about to be able to fallback to general purpose tileset for orientation to the golf courses on OSM US Slack: https://osmus.slack.com/archives/C03TFH5NE83/p1779814786461319 Using one for an basemap and one for an overlay.
- Good feedback from the #developer channel in the OpenStreetMap Discord on how to make the export and filtering: link
The workflow using the Martin tilegenerator would may be more efficient with a full Postgress SQL database to be able to get incrimental updates, this may be future development. My initial goal is to estimate the size of the final PMtiles.
Other future endeavours could also be to explore the new MapLibre Tile (MLT) to encode the DEM data from Mapterhorn directly into the tile.
I created a tag filter with the ways and relations with the leisure=golf_course, using the geojson did not work in using it with the extract command, but my fast look at the geojsons it looks like it can detect it so that was a good sanity-check that the tag-filter was succesfull when opening it in QGIS.
I then used the extract command with the tag filtered pbf file which was 618 kb. I first used the smart strategy, but that looks like it includes way to much data outside of the facilities. I then switched back to the complete_ways strategy and on the complete sweden export it took:
[ 0:09] Peak memory used: 4713 MBytes when running the Osmium-tool inside of WSL 2 on a Ubuntu 26.04 OS. The resulting file pbf was: 6 279kb for Sweden.
If you know something about tile generation or nothing at all, this project will be Open Source, so anyone is welcome to contribute to it!
flowchart LR
download(Download extracts of OpenStreetMap data) --> tagfilter(Use Osmium tag filter to get all golf courses multipolygons and polygons) --> osmiumGeographicExtract(run osmium-extract on the original extract, only exporting data inside of the GEOJSON produced in the previous step.) --> tilemaker(use the proccesed osm opf extract to generate PMTiles using tilemaker) --> upload[(Optionaly upload the PMTiles using protomaps/go-pmtiles to a Cloudflare R2 S3-like bucket.)]
click download "https://switch2osm.org/serving-tiles/#System-requirements"
click tagfilter "https://docs.osmcode.org/osmium/latest/osmium-tags-filter.html"
click osmiumGeographicExtract "https://docs.osmcode.org/osmium/latest/osmium-extract.html"
click tilemaker "https://github.com/systemed/tilemaker"
click upload "https://docs.protomaps.com/pmtiles/cloud-storage"