Is there a way to filter by name tag?

[kikocorreoso]

Hi all and thanks for planetiler.

Let me provide some context: I want to build a map including a layer for, for instance, rivers but I would like to include only some of the rivers, the longer ones, and avoid the rest. For instance, for Germany would be something like Danube, Elbe, Rhine, Oder.

Is it possible doing so by filtering using something like name tag in my schema? If it is possible, how?

I've made several attempts using include_when and/or exclude_when,...

Thanks in advance.

[bdon]

Yes, if you are using custommap with YAML you can write a boolean expression for include_when. Paste your YAML so we can understand what you're trying to accomplish.

[kikocorreoso]

Hi @bdon

I've tried several variations similar to:

[...]
- id: water_lines
  features:
  - source: osm
    geometry: line
    min_zoom: 8
    include_when:
      waterway:
      - river
      name: 
      - "Río Ebro"
      - "Río Tajo"
    attributes:
    - key: kind
      type: match_value
[...]

(*) 'Río' is river in spanish.
I can't see much changes in the output. Maybe I should use something like this together with exclude_when but from the documentation I can't figure out how to do it. It is my first time using planetiler so sorry if it is very obvious.

In the meantime I've tried to use pyosmium to get the rivers layer as an *.osm.pbf file and then use planetiler to create the final *.pmtiles file. Something like this in the sources:

sources:
  water_polygons:
    type: shapefile
    url: https://osmdata.openstreetmap.de/download/water-polygons-split-4326.zip
  admin_points:
    type: shapefile
    url: https://shortbread.geofabrik.de/shapefiles/admin-points-4326.zip
  osm:
    type: osm
    url: geofabrik:spain
  osm2:
    type: osm
    local_path: data/source/my_rivers.osm.pbf

but it seems planetiler only can manage one *.osm.pbf file at this moment.

If I can't accomplish what I need using a custom YAML I could get the customised "rivers" layer as a shapefile or geopackage and use it in planetiler.

Thanks for your help.

[kikocorreoso]

Ok, I think I found the way to do it after many 'trial and error' methodology 😅 :

[...]
    include_when:
      __all__:
        waterway:
        - river
        name: 
        - "Río Ebro"
        - "Río Tajo"
[...]

I think now I understand a little bit how the expressions work.

It would be great if someone can confirm if this is the canonical way to proceed.

When I find some time I will try to provide some examples in order to help others to better understand how to create their custom maps.

[msbarry]

Yep that is correct! Borrowing from imposm3, __all__ and __any__ are how you express "and" / "or" in the filter expressions: https://github.com/onthegomap/planetiler/tree/main/planetiler-custommap#complex-boolean-expressions - by default top-level values in an include_when block are OR'd together, so adding __all__ changes them to be AND'd

[kikocorreoso]

Thanks for the explanation. It is clearer now 😄