Creates a spatialAtRisk object from a SpatialPolygonsDataFrame object.
# S3 method for SpatialPolygonsDataFrame
spatialAtRisk(X, ...)
a SpatialPolygonsDataFrame object; one column of the data frame should have name "atrisk", containing the aggregate population at risk for that region
additional arguments
object of class spatialAtRisk
Brix A, Diggle PJ (2001). Spatiotemporal Prediction for log-Gaussian Cox processes. Journal of the Royal Statistical Society, Series B, 63(4), 823-841.
Diggle P, Rowlingson B, Su T (2005). Point Process Methodology for On-line Spatio-temporal Disease Surveillance. Environmetrics, 16(5), 423-434.
lgcpPredict, linklgcpSim, spatialAtRisk.default, spatialAtRisk.fromXYZ, spatialAtRisk.im, spatialAtRisk.function, spatialAtRisk.SpatialGridDataFrame, spatialAtRisk.bivden