In Germany the Unemployment Agency uses a sectioning of the german map that
is different from the usual Administrative Boundaries.
Some demographic data are available in Administrative Boundaries only, some
in Unemployment Boundaries only.
I would like to generate estimates in one boundary
On Thursday 23 October 2003 13:36, Jens Oehlschlägel wrote:
In Germany the Unemployment Agency uses a sectioning of the german map that
is different from the usual Administrative Boundaries.
Some demographic data are available in Administrative Boundaries only, some
in Unemployment Boundaries
Jens Oehlschlägel wrote:
AND
- is there a general function in R available to map demographic data
between two boundary systems
OR
- is there an efficient R function that can determine the amount of area
overlap between two general polygons (beyond gpclib)
I am willing to share
]
Sent: Friday, October 24, 2003 6:13 AM
Subject: Re: [R] GIS re-mapping / polygon overlap
Jens Oehlschlägel wrote:
- is there an efficient R function that can determine the amount of
area
overlap between two general polygons (beyond gpclib)
I am willing to share developed code
Hisaji Ono wrote:
Hi.
How about GEOS available at.
http://geos.refractions.net/
GEOS supports hole for clipping.
I could build it in MiGW.
However I've only executed demo codes.
Very nice reference. I will be taking a close look through it.
The Greiner-Hormann algorithm is still pretty
