All,
I've been using geos successfully for many months. I appreciate the work
that has been invested in geos and the robustness of the api.
I do have a how to question around the OffsetCurveBuilder but don't want
to clutter this list if geos-devel is not intended to be a general purpose
geos
On Mon, Jan 31, 2011 at 09:48:07AM -0600, Steve Monday wrote:
All,
I've been using geos successfully for many months. I appreciate the work
that has been invested in geos and the robustness of the api.
I do have a how to question around the OffsetCurveBuilder but don't want
to clutter
All,
Given the following coordinates, I'm attempting to generate an geometry
offset by a given distance.
Coordinates:
-95.00401669688529,46.00186834142991,0
-95.00107846495065,46.00180429960306,0
-95.00103515172066,46.00461557617567,0
-95.00407243675345,46.00464859106228,0
Steve,
I suspect your issue is one of coordinate systems. GEOS works on a flat
Cartesian coordinate system. If you were to plot those coordinates on a flat
X-Y plane, I think you'll find that the offsets are as you expect. In other
words, your polygon IS being offset correctly 0.0003 DEGREES
Sorry the third SQL should be FROM alineunion, not FROM alwunionxx
Cheers,
James Sewell
Developer
LISAsoft
Ph: +61 3 8680 3250 Fax: +61 3 8680 3299
Level 9, 601 Bourke St, Melbourne Vic 3000
LISAsoft is part of the A2end Group of
