[geos-devel] Porting LengthIndexedLine.project?

[David Turner]

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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