[FEATURE] generate low details tiles for whole planet when generating detailed tiles for certain region

[caspg]

First of all, huge thanks for building this great application!

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Is your feature request related to a problem? Please describe.

I've generated tiles for Europe and it works great. I wonder if there would be an option to create tiles (country contours, rivers, etc) for the whole planet and the detailed tiles for the desired region?

[msbarry]

Hello! That would probably be doable for some sources, for example natural earth and water polygons but any low zoom features rendered from OSM won't show up.

I think this would require a new config attribute, and a logic tweak in SimpleReader to not filter geometries when reading, and also a tweak to how TileExtents computes the tile x/y range limits by zoom level when that attribute is specified.

I'm working on a few other tasks first so it might be some time before I could take a look at this, but I'd be happy to review a PR.

As a workaround you can run with --bounds=planet to generate the whole planet for all zoom levels but only OSM details from your extract. Or to save space, run planetiler a second time with --bounds=planet --maxzoom=5 and combine the two mbtiles with a tool like tilelive-copy.

[caspg]

@msbarry Thanks for the reply. I'm afraid I won't be able to help with development since I know nothing about Java 😬

I will try to play with suggested workarounds though.

[caspg]

Merging two mbtiles using tilelive-copy gave me broken results (empty tiles) but it looked ok using tile-join (from https://github.com/mapbox/tippecanoe). It saves space but tileserver is returning empty tiles after zoom level 5.

Generating tiles with --bounds=planet gives better results IMO. It allows moving around the map and zoom everywhere. Of course, detailed tiles are returned only for the specific region. Low details tiles for the whole planet add around 25GB to the output.mbtiles.

[msbarry]

Responded in slack - tilelive-copy is probably messing with the metadata. You may need to manually ensure that minzoom=0, maxzoom=14, bounds=-180,-90,180,90 when you combine using tilelive-copy

[makinori]

Thank you so much for this awesome program. I'm so happy it exists and I'd love to give support if I could.

I was looking at this too after I generated a planet mbtiles file yesterday. I'm extremely pleased with the results, however comparing my output with MapTiler, it's missing some low zoom details I wish I'd have. In the meantime I'll look around for a solution. I know OSM Liberty adds in some natural earth relief tiles hosted on GitHub, but they're not as pretty.

Planetiler:

MapTiler:

[msbarry]

Thanks for reaching out @makitsune! For onthegomap I use natural earth 2 shaded relief - it looks ok but a vector style would be nicer. I'm trying to keep planetiler compatilble with open-source openmaptiles by default, but it's fine to add changes you can opt-into with command-line flags. My understanding is that maptiler's global landcover data is a proprietary dataset, any idea if an open alternative might exist elsewhere?

[acalcutt]

@makitsune

In my map style at wifidb.net I added a raster layer behind the planetiler map that looks like this https://tiles.wifidb.net/data/jaxa_color/#1.32/50.3/-48.7

Which I can then merge into my style like this https://tiles.wifidb.net/styles/WDB_OSM/#1.19/29.3/-54

I generated my color relief using gdaldem. Right now I have a copy under jaxa_color.mbtiles here ( https://drive.google.com/drive/folders/1Uo5xyFd8it7UH3pSmBiWP4lfZdM9OmhA?usp=sharing ) though I am trying to regenerate them without a missing chunk of greenland (currently working on this)

[acalcutt]

I just wanted to let you know, I finally updated my raster color-relief mbtiles if you are still looking for something. I've updated all my full planet mbtiles made from the JAXA DEM images and put them on my google drive if anyone is interested. They can be downloaded here https://drive.google.com/drive/folders/1Uo5xyFd8it7UH3pSmBiWP4lfZdM9OmhA?usp=sharing

jaxa_terrainrgb.mbtiles - Is a full planet TerrainRGB file made with gdal and rio rgbify. This can be used with the new terrain features of maplibre or with the older hillshade features. (example here).

jaxa_color.mbtiles - A full planet color relief map created using gdaldem color-relief (example here)

jaxa_hillshade.mbtiles - A full planet hillshade map created with gdaldem hillshade. I preferer to use the TerrainRGB dynamic hillshade over this file, but I updated it anyway. (example here)

As you can see from the examples above, I have fixed the missing chunk of Greenland that the last version of these files had.