I have a PostGIS database where the data is in an unknown or incorrect coordinate system. Is there a way given some known points in the data to translate all the data to a specific coordinate system.
If it is just in an unknown co-ordinate system, but you know the EPSG code that is should be. You can run:
For example I have a table called lines, which has a geometry column called geom, which I want to set to EPSG:4326:
ALTER TABLE lines ALTER geom TYPE geometry(LineString, 4326) USING ST_SetSRID(geom, 4326)