README

Summary

Manipulating french regions, départements, communes, etc. polygons from OpenStreetMap or IGN, for display on maps using leaflet.

Data import from OSM

Shapefiles are taken from http://osm13.openstreetmap.fr/~cquest/openfla/export/ (also shared on https://www.data.gouv.fr/fr/organization/openstreetmap)

Different resolution (from 5 meters to 100 meters can be used depending on the scale of maps to display).

The following example imports shapes for regions, departements, arrondissements, epci and communes:

$ cubicweb/bin/cubicweb-ctl osmfrance_import_shp <myinstance> \
> --regions=path/to/regions-20140306-100m-shp.zip \
> --departements=path/to/departements-20140306-100m-shp.zip \
> --arrondissements=path/to/arrondissements-20140306-100m-shp.zip \
> --epci=path/to/epci-20140306-100m-shp.zip \
> --communes=path/to/communes-20140306-100m-shp.zip

Data import from IGN

Shapefiles are taken from GEOFLA version 1.1:

http://www.data.gouv.fr/en/dataset/geofla-communes http://www.data.gouv.fr/fr/dataset/geoflar-arrondissements http://www.data.gouv.fr/en/dataset/geofla-departements-30383060

$ cubicweb/bin/cubicweb-ctl ign_import_shp <myinstance>
> --departements=path/to/DEPARTEMENT.SHP \
> --arrondissements=path/to/ARRONDISSEMENT.SHP \
> --communes=path/to/COMMUNE.SHP

Queries on data

The following query returns the polygon corners (as latitude, longitude coordinates) for Communes (cities) only:

Any DISPLAY(G, 4326) LIMIT 10 WHERE X geometry G, X is Commune

The following returns all types:

Any DISPLAY(G, 4326) LIMIT 10 WHERE X geometry G

Displaying data

The leaflet cube can be used for displaying these polygons on a map; the CW view used for that is leaflet-geojson

For example, the query:

Any DISPLAY(G, 4326),X LIMIT 20 WHERE X geometry G, X is Departement

should display 20 departements, using X (the Departement eid) as Z value (color value) using a yellow-red colormap.

The corresponding URL using the leaflet view is:

http://<server>/view?rql=Any+DISPLAY%28G%2C+4326%29%2CX+LIMIT+20+WHERE+X+geometry+G%2C+X+is+Departement&vid=leaflet-geojson
source repositoryhttp://hg.logilab.org/review/cubes/osmfrance
test environmentcubicweb-osmfrance env
owned byjroy, rcardona
may be discussed on<not specified>
use license<not specified>