sf.polys {RapidPolygonLookup} | R Documentation |
Cropped spatial polygons from California Census tracts bounded between San Francisco limits
data(sf.polys)
A list object with the following elements:
data
data frame retained from California tracts object of class SpatialPolygonsDataFrame
polys
PolySet object from PBSmapping containing the spatial polygons
poly.centers
PolyData object from PBSmapping containing the polygon centroids
This object is created from a function of CropSpatialPolygonsDataFrame() from the RapidPolygonLookup package
http://cran.r-project.org/web/packages/UScensus2010/index.html
Zack W. Almquist (2010). US Census Spatial and Demographic Data in R: The UScensus2000 Suite of Packages. Journal of Statistical Software, 37(6), 1-31. URL http://www.jstatsoft.org/v37/i06/
data(sf.polys, envir = environment())
plotPolys(sf.polys$polys)