[postgis-users] simplify() on lat/lon data

[strk]

On Thu, May 20, 2004 at 10:14:45PM -0400, Norman Vine wrote:
> Paul Ramsey writes:
> > 
> > If you have lat/lon data, the unit of interest is the "degree", so 0.01 
> > is still a *huge* distance. You really are best off only using 
> > simplify() in planar projections. 
> 
> The chord distance usually works well for sperical measure :-)

Are you suggesting a spherical_simplify() ?
If you want to try, replace distance_pt_seg at postgis_algo.c:86
with a call to a chord distance function and see what happen.

--strk;

> 
> Norman
> 
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