[postgis-users] Topological editing with OpenLayers

[Jan Hartmann]

Thanks Paul, that was indeed what I was looking for.

I'm not sure if it would be wise to switch already to OL3 at this 
moment. What would you suggest would be a reasonable time to wait for 
the definitive version for a production environment? And would it make 
sense to work in the meantime on my original idea, implementing this 
functionality within PostGIS-topology?

Jan

On 01/05/2014 07:47 PM, Paul Ramsey wrote:
> Maybe on OL3?
>
> http://vimeo.com/78298228
>
> P
>
> On Fri, Jan 3, 2014 at 4:14 AM, Jan Hartmann <j.l.h.hartmann at uva.nl> wrote:
>> Hi all,
>>
>> I have written a simple OpenLayers-application to edit a PostGIS polygon
>> layer: read one polygon from the server as GeoJSON, adapt it interactively,
>> and write it back again via GeoJSON. Points are only moved, not created or
>> deleted.
>>
>> The polygon layer is topologically correct: all adjoining polygons share the
>> same points. With QGIS I can choose "topological editing", to automatically
>> move corresponding points from adjoining polygons. With the GeoJSON
>> application that is not possible: whenever I move a boundary point of one
>> polygon, the corresponding points on adjoining polygons remain where they
>> are.
>>
>> Is it possible with the new topology methods in PostGIS to write the
>> following update procedure: whenever a changed polygon is written back into
>> the database, all corresponding points on neighbouring polygons will be
>> looked up and changed as well? I guess I would need some sort of pointer for
>> all boundary points to all other boundary points that share the same
>> location.
>>
>> Jan
>>
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