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List:       r-sig-geo
Subject:    Re: [R-sig-Geo] thinlines equivalent?
From:       David PINAUD <pinaud () cebc ! cnrs ! fr>
Date:       2008-06-30 14:55:44
Message-ID: 4868F3F0.6060300 () cebc ! cnrs ! fr
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maybe you can try the function dp() in the package "shapefiles", which 
is an implementation of the Douglas-Peucker polyLine simplification 
algorithm.
Hope it helps
David

David Hugh-Jones a écrit :
> Hi all
>
> I have a big dataset of points and am doing stuff on them that takes a
> lot of time. To speed it up, I would like to use "thinlines" from
> RArcinfo, which basically makes the maps "rougher" by throwing away
> points. Is there an equivalent function for SpatialPolygon type
> objects? (I assume that there's no way to convert _to_ Arcinfo, though
> I know it's possible to read from it).
>
> Cheers
>
> David Hugh-Jones
> PhD Candidate
> Essex University Department of Government
> http://davidhughjones.googlepages.com
>
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo@stat.math.ethz.ch
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>
>
>
>   

-- 
***************************************************
David PINAUD
Ingénieur de Recherche "Analyses spatiales"

Centre d'Etudes Biologiques de Chizé - CNRS UPR1934
79360 Villiers-en-Bois, France 
poste 485
Tel: +33 (0)5.49.09.35.58
Fax: +33 (0)5.49.09.65.26
http://www.cebc.cnrs.fr/

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