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djangopython-3.xgeodjango

Geodjango create a new SRID

Hello guys I've been trying to add a shapefile but I'm facing some difficulties since my country's coordinate system isn't part of the gdal library. How can i create a new SRID.I have already created the srs and defined the spatial reference system in postgis.

Solution

  • PostGIS stores Spatial reference systems in a table called spatial_ref_sys. Django has a model to access the data in this table called SpatialRefSys, but it's not documented.

    Also not documented is the utility function add_srs_entry(), which takes an SpatialReference instance as first argument, which can be defined from a PROJ.4 string.

    So something like this should work:

    from django.contrib.gis.utils.srs import add_srs_entry
from django.contrib.gis.gdal import SpatialReference

srs = SpatialReference('''...PROJ.4 string...''')
add_srs_entry(srs)

    Alternatively, you can add the entry using a database management tool