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Apr 2, 2025
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basemaps layers water, rio-pmtiles docs #109

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8023ae1
basemaps layers: water includes line and point geometries.
bdon Apr 2, 2025
f2f4c82
pmtiles create: describe options for rio-pmtiles
bdon Apr 2, 2025
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4 changes: 3 additions & 1 deletion basemaps/layers.md
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Expand Up @@ -395,7 +395,9 @@ This layer is currently empty.

<MaplibreMap highlightLayer="water" :zoom=6 :showZoom="true" :lat="-1.3" :lng="-49"/>

Polygons from the Natural Earth 50m `lakes` and `ocean` themes for z0-z4, 10m for z5, preprocessed land polygons from [OSMCoastline](https://osmdata.openstreetmap.de) for z6+.
* Polygons, lines and point labels from OpenStreetMap.

* Polygons from the Natural Earth 50m `lakes` and `ocean` themes for z0-z4, 10m for z5, preprocessed land polygons from [OSMCoastline](https://osmdata.openstreetmap.de) for z6+.

| Key | Values | Description |
| -------------- | :---------------------------------------------------------------------------------------------: | ----------: |
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13 changes: 11 additions & 2 deletions pmtiles/create.md
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Expand Up @@ -42,10 +42,19 @@ gdal_translate -expand rgb input.tif input_rgb.tif

pip install rio-pmtiles

# in this example create 512x512 PNG tiles from zooms 0 to 16.
rio pmtiles input_rgb.tif output.pmtiles --format PNG --zoom-levels 0..16 --tile-size 512 --resampling bilinear
rio pmtiles input_rgb.tif output.pmtiles --format PNG --resampling bilinear
```

Options:

* `--format`: One of `PNG` (lossless), `JPEG`, `WEBP`. `JPEG` is fastest to generate. Default `WEBP`.
* `--tile-size`: the dimensions in pixels. 512 is recommended for displaying in MapLibre GL. default `512`.
* `--resampling`: Choose `nearest` for discrete data. Default `bilinear`.
* `--silent`: Don't show a progress bar.
* `--zoom-levels`: Specify a range `10..12` to only generate those zoom levels. By default, generates all levels between 0 and the level to capture the full detail of the input.
* `--help`: Show other advanced options and GDAL flags.


## GDAL

GDAL has native support for PMTiles starting with version 3.8.0 (2023-11-13), see [gdal.org/drivers/vector/pmtiles](https://gdal.org/drivers/vector/pmtiles.html) for details.
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