ipdw (version 0.2-1)

costrasterGen: Generate a cost Raster

Description

generate a cost raster from an object of class "SpatialPolygons"

Usage

costrasterGen(xymat, pols, extent = "polys", projstr)

Arguments

xymat

Matrix of coordinates

pols

SpatialPolygons object

extent

Define extent based on extent of xymat (pnts) or pols (polys). Default is polys.

projstr

proj4 string defining the inherent projection

Value

• RasterLayer

Examples

Sr1<-Polygon(cbind(c(0,0,2,2,0),c(0,4,4,0,0)))
Sr2<-Polygon(cbind(c(2,2,4,4,2),c(0,2,2,0,0)))
Srs1<-Polygons(list(Sr1), "s1")
Srs2<-Polygons(list(Sr2), "s2")
pols<-SpatialPolygons(list(Srs1,Srs2), 1:2)

xymat<-matrix(3,3,nrow=1,ncol=2)
costras<-costrasterGen(xymat,pols,projstr=NULL)
plot(costras)
points(xymat)