All Questions
3 questions
4
votes
1
answer
208
views
PostgreSQL query not working in QGIS Graphical Modeler
Edit: For further context, my table does have a unique id in the form of an integer. Through the database manager, the query executes successfully and I am able to load the query layer into QGIS. This ...
- 41
2
votes
1
answer
703
views
Running spatial query on huge table [duplicate]
I've got two tables conatining geometry: 1 containing big polygon's (regions, srid=4326) and another containing smaller polygon's (pand, srid=28992, containg ~9.9milion rows)
By using one of the big ...
- 2,329
7
votes
2
answers
857
views
Find start of river
Edit: Follow-up question here (= Find headwater polygons).
How can I determine the start of a river in PostGIS?
I have a river network (Multiline) and want to find the startpoints of the rivers.
I ...
- 265