[postgis-users] st_buffer (radius_of_buffer)

[ibrahim saricicek]

hi all;

I think 0.0 of radius means the object itself? Am i wrong?

I'm inserting a row to my route table

insert into route (the_geom) select
st_transform(ST_GeomFromText('SRID=4326;multilinestring((30 20,31 21,32
22))'),900913)

why the result of this is false? that is a point on my route. what is
defined with '0.0 of radius'?
the result is true for 0.1 to 0.000000001? Why for 0.0000000001 radius,
result is false?

select
st_intersects(st_buffer(route.the_geom,0.0), st_geomFromText('POINT(30
20)',4326))
as result
from route
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