Loading data¶
Prerequisites for your data¶
Layers¶
WMTS protocol
WebMercator Projection
Core¶
Only LineString geometries
Simple geometries
Not overlapping
If possible:
Connex graph
Name column
Data source
Formats: Shapefile or pure SQL dump (CREATE TABLE + INSERT)
Land¶
Cities polygons (Shapefile or SQL, simple and valid Multi-Polygons)
Districts (Shapefile ou SQL, simple and valid Multi-Polygons)
Restricted Areas (Shapefile ou SQL, simple and valid Multi-Polygons)
Extras¶
Languages list
Structures list (and default one)
Load MNT raster¶
In QGIS, you can visualize your DEM, or merge several tiles together (in Raster > Misc > Merge).
Generate a GeoTIFF, and upload both files (.tif
+ .tfw
) on the server.
And use the Geotrek-admin command to load it into PostGIS :
sudo geotrek loaddem <PATH>/dem.tif
Note
This command makes use of GDAL and raster2pgsql
internally. It
therefore supports all GDAL raster input formats. You can list these formats
with the command raster2pgsql -G
.
Note
The elevation data of DEM must be integer values. If the elevation data are floating
numbers, you can convert them in integer values with the Raster calculator processing
of SAGA in QGis
(Processing > Toolbox > SAGA > Raster calculus > Raster calculator) with formula parameter set to int(a)
.
Note
If you only have a .tif
file, you can generate the .tfw
file with the command gdal_translate -co "TFW=YES" in.tif out.tif
.
It will generate a new .tif
file with its .tfw
metadata file.
Note
If you want to update the altimetry of the topologies you need to use the option : –update-altimery