[geos-devel] [GEOS] #713: [Patch] Add GeometryPrecisionReducer to C API

GEOS geos-trac at osgeo.org
Wed Sep 30 23:05:21 PDT 2015


#713: [Patch] Add GeometryPrecisionReducer to C API
------------------------+---------------------------
 Reporter:  smani       |       Owner:  geos-devel@…
     Type:  defect      |      Status:  new
 Priority:  major       |   Milestone:  3.4.3
Component:  Default     |     Version:  3.4.2
 Severity:  Unassigned  |  Resolution:
 Keywords:              |
------------------------+---------------------------

Comment (by strk):

 Perturbating the input (such as rounding its coordinate values) is often
 enough to change the outcome of operations. A good test would be computing
 the intersection between two segments long 10 times the grid cell size,
 crossing and having the endpoints at "scale" distance each other. If the
 computation is performed at the target precision model the intersection
 point will on the grid, otherwise it'll be in between.

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Ticket URL: <https://trac.osgeo.org/geos/ticket/713#comment:12>
GEOS <http://trac.osgeo.org/geos>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).


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