On Jul 10, 2012, at 12:24 AM, Ed Linde <edoli...@gmail.com> wrote:
> Thanks, is there a way to then dump out inflection points in postgis? Don't know off the top of my head. Perhaps there is a way to simplify the line so all points that don't change the slope are removed. Then you can dump the resulting line. > > On Mon, Jul 9, 2012 at 3:13 PM, Mr. Puneet Kishor <punk.k...@gmail.com> wrote: > > On Jul 9, 2012, at 6:37 PM, Ed Linde wrote: > > > Thanks Nicolas. I was wondering what these points in the linestring > > symbolize? Are the default set of points on a 2D linestring > > indicating the positions at which the line is not straight and changes > > directions? > > > Points making up a linestring are just that, points. They have no > relationship to whether or not the line changes direction. Consider... > > > +---------+-------------+---------------+ > > '+' are points defining the linestring that is symbolized by '+' and '-', but > there is no change in direction, no inflection point. > > > -- > Puneet Kishor > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users
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