How to create Custom pmtiles from osm.pbf files (change minZoom, add more elements that are missing in default schema)

[ovisopa]

Hello everyone,
I'm new to OSM, 2 months ago I started to build an iOS/Android app and very fast I understood I can't use an tile server like mapTiler because of the free tier limits, so I got an 64Gb +1TB NVME workstation to use it as a full PLANET tile server.

I installed the needed software, I run Martin, NGIX + CloudFlare tunnel and I was able to generate the pmtiles from a osm.pbf file I downloaded from geofabrik. To make things easy in the beginning I only downloaded Romania pbf, and build my tiles using this script:

#!/bin/bash
# Move to the project root
cd "$(dirname "$0")/.."

# Default to Bucharest for the test, but we can change this later
AREA=${1:-romania}
MEMORY=${2:-48g}

echo "Building map for: $AREA with $MEMORY RAM..."

java -Xmx$MEMORY -jar bin/planetiler.jar \
  --osm-path=data/$AREA-latest.osm.pbf \
  --output=data/$AREA.pmtiles \
  --area=$AREA \
  --force "$@"

echo "Done! Output saved to data/$AREA.pmtiles"

than I started styling my maps, element by element, after a few days I noticed there are some elements that are not available in my pmtiles ( natural: [spring], man_made: [tower, mast, antenna], waterway: [waterfall] )

In the last few evening I tried to generate the tiles with the missing elements and also I needed to change the min-zoom value for some elements like paths, trails and also to some POIs.

I tried multiple ways, here are a few scripts I used but I wasn't able to add the springs in my map :(

java -Xmx$MEMORY -jar bin/planetiler.jar \
  --osm-path=data/$AREA-latest.osm.pbf \
  --output=data/${AREA}_final.pmtiles \
  --nodemap-type=sparsearray \
  --storage=mmap \
  --area=$AREA \
  --force \
  --transportation-z13-paths=true \
  --extra-name-tags=natural,man_made,waterway,amenity,historic \
  --include-tags=true \
  --keep-tags=natural,man_made,waterway,amenity,historic \
  --all-names=true \
  --schema=configs/topo.yml

 # configs/topo.yml
schema:
  - id: topo_pois
    type: point
    osm:
      - tags:
          natural: [spring]
          man_made: [tower, mast, antenna]
          waterway: [waterfall]
          amenity: [drinking_water]
    mapping:
      name: name
      topotype: ["coalesce", ["get", "natural"], ["get", "man_made"], ["get", "amenity"]]
    minzoom: 10
    maxzoom: 14

    # config/planetiler.properties file
    # This forces the POI layer to be more inclusive
poi_class_include=spring,tower,communications_tower,waterfall,drinking_water
poi_min_zoom=10`

`java -Xmx$MEMORY -jar bin/planetiler.jar \
  --osm-path=data/$AREA-latest.osm.pbf \
  --output=data/${AREA}_topo.pmtiles \
  --nodemap-type=sparsearray \
  --storage=mmap \
  --area=$AREA \
  --force \
  --transportation-z13-paths=true \
  --transportation-name-limit-merge=false \
  --building-merge-z13=false

Can anyone guide me to the correct path to be able to generate pmtiles with all the missing elements?

I don't know if the correct way is to generate a set of pmtiles with the default schema, and than to generate the missing tiles in a separate pmtiles file, I think it would be better to have only one CORRECT set of tiles.

Is there a way to create a new COMPLETE schema and to use it as a parameter? (I have tried passing parameters to planetiler.jar with a different yml schema but it didn't do what I expected, the number of elements in the tiles has increased but my springs, communication towers , etc did not appear in the map, and I use MapLibre to style these elements, if the elements ware in my tiles for sure they should have been displayed)

I never build any java code, and not really sure where is the schema that planetiler.jar is using by default, is it this one ? https://github.com/openmaptiles/planetiler-openmaptiles/blob/main/src/main/java/org/openmaptiles/generated/OpenMapTilesSchema.java

Thank you for any advices !

PS. Bellow I post a few screenshots, and also explain why I need to modify the min zoom on some elements

This one is at Z 12.99

And the one bellow is at Zoom level 13. I know the rivers/streams seem to thick but that can be easily style out, the problem is I need these and also all the trails visible even in zoom 12, I will style them to be less visible, but I need them in my tiles at z12.

So can these settings be changed when I run planetile.jar ?

[msbarry]

Hello! Currently the only way to customize the generated openmaptiles tiles is to fork https://github.com/openmaptiles/planetiler-openmaptiles and make changes there. You can also use yaml schemas to create a separate pmtiles file. I have a Google Summer of Code project proposal out for this summer that would address this issue and let you combine multiple profiles into a single output pmtiles (as well as filter the generated pmtiles file to just what your maplibre style needs) so hopefully this will be possible in the near future.

[ovisopa]

Thank you for your quick reply @msbarry !

... is to fork https://github.com/openmaptiles/planetiler-openmaptiles and make changes there

I opened file /openmaptiles/layers/Transportation.java

minzoom = switch (baseClass) {
        case FieldValues.CLASS_SERVICE -> isDrivewayOrParkingAisle(service(element.service())) ? 14 : 13;
        case FieldValues.CLASS_TRACK, FieldValues.CLASS_PATH -> routeRank == 1 ? 12 :
          (z13Paths || !nullOrEmpty(element.name()) || routeRank <= 2 || !nullOrEmpty(element.sacScale())) ? 13 : 14;
        case FieldValues.CLASS_TRUNK -> {
          boolean z5trunk = isTrunkForZ5(highway, routeRelations);
          ...

Please tell me in a few words if these are the places where I need to update the code, for example to change the min_zoom for paths, instead of 13 to be 12 (I will understand the logic behind the java code as in the past I was a web developer html-php-mysql) I just want to know that I make the modifications in the correct places.

I should get the files in layers folder one by one and adjust each min_zoom setting for all the elements I want to have different values, and if I don't find that specific element in the files I see in the layers folder, I should add it in the /org/openmaptiles/addons/ExtraLayers.java ?

For example I opened all 3 files related to "water" and I could not find any mention regarding spring , this means springs are not defined in this default schema? so I will need to add these elements in the ExtraLayers.java ?

Thank you again.