[postgis-users] Selecting pairs of points that have the same distance between them

[Bob Pawley]

Hi

I have a geometry of points (more than one pair) that represent the intersections between a line and a column of multistrings. 

Can anyone point me to a method of determining which pairs of points are the same distance apart as are other pairs of points.

This will isolate the closed object from the open object for me.

The srid is all –1.
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