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I have a set of XYZ data which I want to query in PostgreSQL in order to find the volume. I've been trying the ST_Volume on the geometries (have also used ST_MakeSolid and ST_Tesselate) but all queries are giving results of 0. The documentation on ST_Volume for PostGIS is very vague.

I have installed the sfcgal extension as suggested when I looked up the 3D queries

  • Welcome to GIS SE. As a new user, please take the Tour. It's far more difficult to help you with your SQL if you don't provide it in the question. Please Edit the question to provide more information about the table data and the query you are issuing. – Vince Oct 26 at 15:07

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