Import data from IGN DB Topo in shapefiles format

[yhilem]

Hi,
Thanks for this very good and interresting project.
I want import data in shapefile format from IGN DB Topo (https://geoservices.ign.fr/documentation/diffusion/telechargement-donnees-libres.html#bd-topo).
Since 1 January 2021, all public data (vector and ortho-images) from the National Institute of Geographic and Forest Information (IGN) are free and accessible free of charge (https://www.actuia.com/english/the-igns-public-data-relating-to-topography-relief-and-visualization-of-the-territory-are-free-and-open-to-the-public/)

Cdt
Youcef HILEM

[bchapuis]

Interesting, thank you for the pointer. The ftp server seems momentanely down (I get the following message: There was a problem connecting to the server "ftp3.ign.fr"). I will try again later.

I guess that the best way to proceed would be to use a tool like ogr2ogr to import the shapefiles from IGN into postgis in a webmercator projection (EPSG:3857). I added an exemple to import the shapefiles from naturalearth in postgis in the documentation.

https://github.com/baremaps/baremaps/blob/main/docs/examples/naturalearth/index.md#working-with-shapefiles

Once the data is imported in postgis, it should be possible to write a configuration file for baremaps that query the table containing the imported data. Something like:

id: myconfig
layers:
  - id: mylayer
    type: geometry
    queries:
      - minZoom: 0
        maxZoom: 5
        sql: SELECT id, hstore(mytable.*) as tags, geom FROM mytable

[yhilem]

Good news. I will not be long in testing all this.