[geos-devel] "self intersecting" polys

Paul Ramsey pramsey at refractions.net
Mon Oct 11 21:59:50 EDT 2004


Wouldn't a facility to clean these topologies be preferable to defining 
them as "correct" :) I think the standards definition is fine, there 
just needs to be a way to massage collected data into what the operator 
really "means" by it.
P
On 11-Oct-04, at 3:33 PM, Jonathan Greenberg wrote:

> Martin (and others):
>
>     I read your Sept 4 response about self intersecting polys, and I 
> was
> wondering where I can go to put in my two cents about "standards" -- 
> self
> intersecting polys are EXTREMELY frequent in GPS-collected data -- when
> someone walks a poly with a GPS, he/she often over steps their starting
> point, or random GPS error can lead to these small errors.  Seeing as 
> how
> GPS is a pretty important part of spatial analysis, the ability to 
> include
> these type of data seems critical.
>
> --j
>
> -- 
> Jonathan Greenberg
> Graduate Group in Ecology, U.C. Davis
> http://www.cstars.ucdavis.edu/~jongreen
> http://www.cstars.ucdavis.edu
> AIM: jgrn307 or jgrn3007
> MSN: jgrn307 at msn.com or jgrn3007 at msn.com
>
>
>
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