Hi,
ST_Envelope(geometry) returns a kind of degenerated version (float4s instead of
float8s) of the extent of a geometry based on the cached BOX2D and
ST_Extent(geometry) is an aggregate.
Is there a non aggregate function which returns the exact extent (float8s) of a
geometry?
Try:
SELECT ST_AsText(ST_Envelope('LINESTRING(0 0, 1.00000000000001 1)'::geometry))
UNION ALL
SELECT ST_AsText(ST_Box2D('LINESTRING(0 0, 1.00000000000001 1)'::geometry))
UNION ALL
SELECT ST_AsText(ST_Extent('LINESTRING(0 0, 1.00000000000001 1)'::geometry));
Thanks,
Pierre
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