Hi all,
I think I've got a bit of a problem with snapping points to lines. I had
thought that using line_interpolate_point(..., line_locate_point(...)) would
do the trick, but this seems not to be the case:
gis=# SELECT ST_AsText(v.the_geom), ST_SRID(v.the_geom),
ST_AsText(r.the_geom),
On Mon, May 03, 2010 at 04:41:09PM +1000, Francis Markham wrote:
Hi all,
I think I've got a bit of a problem with snapping points to lines. I had
thought that using line_interpolate_point(..., line_locate_point(...)) would
do the trick, but this seems not to be the case:
Francis,
thing is
Mmm, so it is a floating point issue - the distance is 9.57711783686133e-12
meters. Is there anyway to specify a tolerance for ST_Intersects and
similar predicates?
-Francis
On 3 May 2010 17:53, strk s...@keybit.net wrote:
On Mon, May 03, 2010 at 04:41:09PM +1000, Francis Markham wrote:
Hi
On Mon, May 03, 2010 at 06:15:14PM +1000, Francis Markham wrote:
Mmm, so it is a floating point issue - the distance is 9.57711783686133e-12
meters. Is there anyway to specify a tolerance for ST_Intersects and
similar predicates?
You may use DWithin() for a tolerance-based intersection
D'oh. Totally forgot about DWithin!
Problem, solved. Thanks very much!
-Francis
On 3 May 2010 18:24, strk s...@keybit.net wrote:
On Mon, May 03, 2010 at 06:15:14PM +1000, Francis Markham wrote:
Mmm, so it is a floating point issue - the distance is
9.57711783686133e-12
meters. Is
