[R-sig-Geo] polygons to arcs?

Tim Keitt tkeitt at gmail.com
Thu Mar 15 16:49:23 CET 2007

Is there an 'sp' function that takes a polygon as its argument and
returns a set of line objects corresponding to the arcs in the

Or better yet, a function that given a set of polygons, returns the
hull? (ie the set of singleton arcs after applying the polys to arcs


Timothy H. Keitt, University of Texas at Austin
Contact info and schedule at http://www.keittlab.org/tkeitt/
Reprints at http://www.keittlab.org/tkeitt/papers/
ODF attachment? See http://www.openoffice.org/

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