auck.polys {GeoXp}R Documentation

Spatial polygonal contours of auckland dataset

Description

A `polylist' object for drawing spatial polygonal contours of auckland dataset.

Usage

data(auck.polys)

Format

The format is a list of polygons of class polylist.

Details

This object is used in the `spdep' package, created by Roger Bivand. In the `GeoXp' package, we don't use `polylist', `SpatialPolygonDataFrame' or 'Map' object because a site can only be represented by a pair of coordinates and not by a polygonnal contour. However, users have the possibility to repesent spatial polygonal contours as a backgroud map. That's why we created functions `spdf2list', `polylist2list' and `map2list' for extracting from a spatial object only the vertices of the polygons.

Source

Marshall R M (1991) Mapping disease and mortality rates using Empirical Bayes Estimators, Applied Statistics, 40, 283-294.

Bailey T, Gatrell A (1995) Interactive Spatial Data Analysis, Harlow: Longman - INFOMAP data set used with permission.

References

Bivand R. (2006), `The spdep package', http://cran.r-project.org/doc/packages/spdep.pdf.

Examples

data(auck.polys)
contours.auckland<-polylist2list(auck.polys)

[Package GeoXp version 1.0 Index]