ipdw (version 0.2-1)

pathdistGen: Generate a stack of path distance raster objects

Description

Generate a stack of path distance raster objects

Usage

pathdistGen(spdf, costras, range, step = 16, yearmon = "default")

Arguments

spdf

SpatialPointsDataFrame object

costras

RasterLayer cost raster

range

numeric. Range of interpolation neighborhood

step

numeric. Number of sub loops to manage memory during raster processing.

yearmon

character. String specifying the name of the spdf

Value

• RasterStack object of path distances

Examples

spdf<-data.frame(rnorm(2))
xy<-data.frame(x=c(4,2),y=c(8,4))
coordinates(spdf)<-xy

m<-matrix(NA,10,10)
costras<-raster(m,xmn=0,xmx=ncol(m),ymn=0,ymx=nrow(m))
costras[]<-runif(ncell(costras),min=1,max=10)
#introduce spatial gradient
for(i in 1:nrow(costras)){
costras[i,]<-costras[i,]+i
costras[,i]<-costras[,i]+i
}

rstack<-pathdistGen(spdf,costras,100)