[postgis-users] intersection doesn't seem to intersect back w/ original geom

[Charlton Galvarino]

Hi, all.  I'm completely stumped and hope the answer is right in front of my face.

The pink ls.
a.geom = 0102000020BA08000002000000ED7E57CC2CDF2F41BCE00145EF9F29414DABCE8596DE2F41F40B15A36C9F2941

The blue ls.
b.geom = 0105000020BA0800000100000001020000000A0000003E35FDD6D4DE2F413858F60E92A12941003235ED84DE2F410075ECAFEF9F294100F99BA4C2DE2F41000B8A37399E294180E6B00C42DF2F410049DDE92E9C2941805D5940DDDF2F41009D30FCC79A2941004F9FEB5CE02F41808734555298294100D58EBEB6E02F41005398EA9B9629410099A09767E02F4100CE6014A99529418024290838DF2F41008CA543DF932941801DD29CF2DD2F41804F933046932941

Their intersection (yellow dot) computed from the above two geoms.
c.geom = 0101000020BA08000075E19F4797DE2F415AA1904B6D9F2941

My SRID's are all the same.

Why in the **** doesn't the final intersection ST_Intersects() w/ either original linestring?!  Precision issue?  I'm nuts issue?

TIA.





Charlton Galvarino
1 (803) 233-6205 : voice
1 (803) 223-9579 :   fax
charlton at 2creek.com

P.O. Box 50960
Columbia, SC 29250
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