There is a way to coerce the input to 2d. It's not pretty, but it works. from django.contrib.gis.geos.prototypes.io import wkt_w wkt = wkt_w(dim=2).write(input_geom).decode() geom = GEOSGeometry(wkt, srid=4674)
Imagine that you get input_geom from somewhere. In our case it was coming from a KML upload. We forced it to 2d using that snippet of code. On Mon, Dec 19, 2016 at 9:51 AM, <[email protected]> wrote: > Jason: when you say create 2 geometry types one with 2 dimensions etc... > how do you specify how many dimensions to have? > Because I created the field in this way: > > geom = models.MultiPolygonField(geography=True, spatial_index=True) > > and let the Django migration do the job, but I don't know how to specify > that it's a 3D field. > > Thanks > > On Tuesday, 8 March 2016 16:34:35 UTC, Jason wrote: >> >> I had a similar issue when uploading a kml to geojson conversion to >> postgis using geodjango. There is no efficient way to do it in Django, so >> I ended up doing a workaround >> >> >> - Create two geometry types, one with dims=2 and other with dims=3. >> Allow both to be null and set default to null >> - When updating, check the geometry dimension via GEOSGeometry.hasz >> >> <https://docs.djangoproject.com/en/1.9/ref/contrib/gis/geos/#django.contrib.gis.geos.GEOSGeometry.hasz>. >> If the return is 2, save the geom in the 2D field, otherwise save to the >> 3D >> >> You can create a save/retrieve method on the model to handle this for you. >> > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/django-users/073345f1-0a70-4645-9c87-577c89b9a511%40googlegroups.com > <https://groups.google.com/d/msgid/django-users/073345f1-0a70-4645-9c87-577c89b9a511%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- George R. C. Silva Sigma Geosistemas LTDA ---------------------------- http://www.sigmageosistemas.com.br/ -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAGyPVTsF1CYmw5gushj8Ky7DLV%3DMRrpf01qFBEY1bUFWtE07mg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
