[geos-devel] Porting LengthIndexedLine.project?
David Turner
novalis at novalis.org
Wed Aug 12 14:16:10 EDT 2009
http://trac.osgeo.org/geos/ticket/283
On Tue, 2009-08-11 at 20:51 -0500, Howard Butler wrote:
> Filing a ticket and attaching the patch is the best way to ensure it
> doesn't get lost. Putting a milestone on it (like 3.2) will also help
> ensure someone looks at it.
>
> Howard
>
> On Aug 11, 2009, at 8:22 PM, David Turner wrote:
>
> > Did I send this to the right place? Or should I create a ticket
> > somewhere? Or is my patch totally off-base?
> >
> > Just trying to make sure this doesn't get lost in the noise.
> >
> > On Fri, 2009-08-07 at 16:45 -0400, David Turner wrote:
> >> OK, I've done the port. A patch, with ported tests, is attached.
> >>
> >> On Thu, 2009-07-23 at 11:13 -0400, David Turner wrote:
> >>> JTS has a class called LengthIndexedLine with a method "project",
> >>> which
> >>> lets you figure out the nearest point on a line to a given
> >>> point. This
> >>> is useful, for instance, if you are trying to figure out what
> >>> street a
> >>> person is on from (possibly slightly inaccurate) GPS observations.
> >>>
> >>> http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/linearref/LengthIndexedLine.html#project(com.vividsolutions.jts.geom.Coordinate)
> >>>
> >>> PostGIS calls this function st_line_locate_point.
> >>>
> >>> GEOS doesn't seem to have it, even though I was under the impression
> >>> that GEOS was merely a port of JTS. If I port JTS's project
> >>> function
> >>> and related functions such as extractPoint to GEOS, would that
> >>> patch be
> >>> likely to be accepted? Or am I missing something about the
> >>> relationship
> >>> between JTS and GEOS?
> >>>
> >>>
> >>> _______________________________________________
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> >>> geos-devel at lists.osgeo.org
> >>> http://lists.osgeo.org/mailman/listinfo/geos-devel
> >> _______________________________________________
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> >> http://lists.osgeo.org/mailman/listinfo/geos-devel
> >
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