[postgis-users] st_clusterwithin fails

Ronnie Lassche ronnie.lassche at merkator.info
Wed Feb 17 04:44:54 PST 2016

I’m trying to use the new st_clusterwithin function, but it keeps failing.

I’ve tried to cluster 20 points with the following query.


                ST_ClusterWithin(geom, 50)

FROM winkels

Most of the times I get the message

“ERROR: Tolerance not defined

SQL state: XX000”

A few times it did work and gave me a result, but trying again will lead to
the same error.

I’m working with postgis 2.2.2dev (but also tried it with 2.2.0).

Anyone has a solution how to solve this?

*Ronnie Lassche*
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