mirror of
https://github.com/protomaps/PMTiles.git
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68 lines
3.0 KiB
Markdown
68 lines
3.0 KiB
Markdown
[](https://www.npmjs.com/package/pmtiles)
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[](https://bundlephobia.com/package/pmtiles)
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[](https://pypi.org/project/pmtiles/)
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# PMTiles
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PMTiles is a single-file archive format for tiled data. A PMTiles archive can be hosted on a commodity storage platform such as S3, and enables low-cost, zero-maintenance map applications that are "serverless" - free of a custom tile backend or third party provider.
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* [Protomaps Blog: Dynamic Maps, Static Storage](http://protomaps.com/blog/dynamic-maps-static-storage)
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* [PMTiles Inspector](https://protomaps.github.io/PMTiles/) - inspect and preview PMTiles local or remote PMTiles archives.
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* Archives on cloud storage may require CORS for the origin `https://protomaps.github.io`
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* [Vector Tiles Example (US Zip Codes)](https://protomaps.github.io/PMTiles/?url=https%3A%2F%2Fprotomaps-static.sfo3.digitaloceanspaces.com%2Fcb_2018_us_zcta510_500k_nolimit.pmtiles)
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Demos require MapLibre GL JS v1.14.1-rc.2 or later
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See also:
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* [Cloud Optimized GeoTIFFs](https://www.cogeo.org)
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## Creating PMTiles
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Download the `pmtiles` binary for your system at [go-pmtiles/Releases](https://github.com/protomaps/go-pmtiles/releases).
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pmtiles convert INPUT.mbtiles OUTPUT.pmtiles
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pmtiles upload OUTPUT.mbtiles s3://my-bucket?region=us-west-2 // requires AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY env vars to be set
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## Consuming PMTiles
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### JavaScript
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See [js/README.md](js/README.md) for usage in Leaflet or MapLibre GL JS.
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### Go
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See the [go-pmtiles](https://github.com/protomaps/go-pmtiles) repository.
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### Python
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See https://github.com/protomaps/PMTiles/tree/master/python/bin for library usage
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### Serverless
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[PMTiles on AWS Lambda](https://github.com/protomaps/PMTiles/tree/master/serverless/aws)
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[PMTiles on Cloudflare Workers](https://github.com/protomaps/PMTiles/tree/master/serverless/cloudflare)
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## Specification
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The current specification version is [Version 3](./spec/v3/spec.md).
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## Recipes
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Example of how to create a PMTiles archive from the [Census Bureau Zip Code Tabulation Areas Shapefile](https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html) using [tippecanoe](http://github.com/protomaps/tippecanoe) and the `pmtiles-convert` python program:
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```sh
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# use GDAL/OGR to convert SHP to GeoJSON
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ogr2ogr -t_srs EPSG:4326 cb_2018_us_zcta510_500k.json cb_2018_us_zcta510_500k.shp
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# Creates a layer in the vector tiles named "zcta"
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tippecanoe -zg --projection=EPSG:4326 --no-tile-compression --no-feature-limit --no-tile-size-limit -o cb_2018_us_zcta510_500k_nolimit.mbtiles -l zcta cb_2018_us_zcta510_500k.json
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pmtiles convert cb_2018_us_zcta510_500k_nolimit.mbtiles cb_2018_us_zcta510_500k_nolimit.pmtiles
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```
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## License
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The reference implementations of PMTiles are published under the BSD 3-Clause License. The PMTiles specification itself is public domain, or under a CC0 license where applicable.
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