[postgis-users] Parallel linestring

Peter Devoy peter at 3xe.co.uk
Sat Apr 15 13:05:25 PDT 2017

It is difficult to visualise the problem but perhaps some combination
of ST_Difference and ST_Union could help you?

If the lines do not exactly overlap you could perhaps first grow all
geometries using ST_Buffer, then use ST_Union on the result, then
maybe use ST_ApproximateMedialAxis to get a line?

Good luck


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