I've got some building outlines that I'm pretty sure I've worked with
before. They are all srid 4326 (lat/lon), converted from a SHP file.
ST_Area returns extremely small numbers for any of the buildings.
It's almost like it's looking at the data like they are absolute
numbers instead of lat/lon.
Thoughts?
As an example:
select st_npoints(the_geom), st_srid(the_geom), st_summary(the_geom),
st_area(st_transform(the_geom,4326)) from buildings;
st_npoints | st_srid | st_summary |
st_area
------------+---------+----------------------------------+----------------------
5 | 4326 | | 9.7305773438805e-09
: MultiPolygon[BS] with 1 elements
: Polygon[] with 1 rings
: ring 0 has 5 points
:
5 | 4326 | | 1.1065881433403e-08
: MultiPolygon[BS] with 1 elements
: Polygon[] with 1 rings
: ring 0 has 5 points
:
--
Eric Ladner
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