Hi,
Geospatial data conflation is not an easy task, and usually depends on :
- the input data
- desired output
- semantics
- conflation based mainly on semantics( / attribute data ), topology or purely
geometric
Note that semantic and topology-based methods are much more robusts than
geometry-based ones.
In any case, there is no magic workflow and the method has to be adapted to the
specific context.
I contributed to an implementation based on PostGIS quite a long time ago :
https://docplayer.fr/8718145-Appariement-de-graphes-de-reseau-avec-postgis.html
( in french ).
There could be some generic algorithms which could be made available in QGIS
processing to ease creation of workflows for conflation ( e.g. node
fingerprints, geometry local correspondance search ).
Get in touch if you are interested in developing some.
Vincent
On 30/05/2024 11:46, PIERRE Sylvain via QGIS-Developer wrote:
Hi devs and qgis power users,
After investigating I can arg that there’s a lack of conflation tools in QGIS
like such existing for Esri :
https://proceedings.esri.com/library/userconf/proc17/tech-workshops/tw_513-105.pdf
Is there some plan or something I miss for doing such task in QGIS ?
Thanks
**
Sylvain PIERRE**
Chef de projet système d’information
Direction des Systèmes d’Information et du Développement Numérique
Service Projets et Ingénierie Numérique
*Collectivité européenne d’Alsace*
Tél : 03 88 76 68 88
sylvain.pie...@alsace.eu <mailto:sylvain.pie...@alsace.eu>
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