I do have 2 simple linestrings which partly have the same geometry (see attached dump and image). My aim is to detect the common part of these two linestrings with the following query:
select st_intersection(a.the_geom, b.the_geom), a.myid from aline1, aline2 But as the result I get a geometrycollection with one POINT and one LINESTING. I expected one linestring. Is it a bug?? I'll appreciate any hints. My system: Postgis 1.4.0 Geos 3.1.1 Postgres 8.3.6 Best regards Dr. Horst Düster Stv. Amtschef / GIS-Koordinator Kanton Solothurn Bau- und Justizdepartement Amt für Geoinformation SO!GIS Koordination Rötistrasse 4 CH-4501 Solothurn Telefon ++41(0)32 627 25 32 Telefax ++41(0)32 627 22 14 mailto:[email protected] http://www.agi.so.ch
aline1.sql
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aline2.sql
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intersecterror.png
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