Hi All, ST_MakeLine( [set of 3d points] ) returns null. Is that supposed to happen? I'm trying to get to a place where I can call st_length3d_spheroid( ) on a linestring, made of of a bunch of 3d points, which were made with ST_GeomFromText( ) using values from my GPS NMEA parser. Am I missing something? -- Chris Hinkle Brooklyn, NY lilhinx at gmail.com 646-240-3024