R/areaPoly.R

In UScensus2000: US Census 2000 Suite of R Packages

Defines functions areaPoly

Documented in areaPoly

areaPoly<-function(sp.object=NULL){
	### Check to make sure the object is sp-class
		if(class(sp.object)[1]!="SpatialPolygonsDataFrame")
			cat("Incompatible class!")
	area<-sapply(slot(sp.object, "polygons"), slot,"area")
	area
	}

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