allocate: allocate function

In bentaylor1/spatsurv: Bayesian Spatial Survival Analysis with Parametric Proportional Hazards Models

Description

A function to allocate coordinates to an observation whose spatial location is known to the regional level

Usage

allocate(poly, popden, survdat, pid, sid, n = 2, wid = 2000)

Arguments

poly	a SpatialPolygonsDataFrame, on which the survival data exist in aggregate form
popden	a sub-polygon raster image of population density
survdat	data.frame containing the survival data
pid	name of the variable in the survival data that gives the region identifier in poly
sid	the name of the variable in poly to match the region identifier in survdat to
n	the number of different allocations to make. e.g. if n is 2 (the default) two candidate sets of locations are available.
wid	The default is 2000, interpreted in metres ie 2Km. size of buffer to add to window for raster cropping purposes: this ensures that for each polygon, the cropped raster covers it completely.

Value

matrices x and y, both of size (number of observations in survdat x n) giving n potential candidate locations of points in the columns of x and y.

bentaylor1/spatsurv documentation built on May 12, 2019, 3:02 p.m.