geoRing: Produces a surface based on an alternative ring-search...

In bobverity/Rgeoprofile: Geographic profiling in R

Description

Produces a surface based on an alternative ring-search strategy (ie searching in an expanding radius out from the 'crimes'). The output from this function can be used with geoProfile() and geoReportHitscores to produce a map and hitscores based on this strategy.

Usage

geoRing(params, data, source, mcmc)

Arguments

params	Parameters list in the format defined by geoParams().
data	Data object in the format defined by geoData().
source	Potential sources object in the format defined by geoDataSource().
mcmc	mcmc object of the form produced by geoMCMC().

Examples

# John Snow cholera data
d <- geoData(Cholera$longitude, Cholera$latitude)
s <- geoDataSource(WaterPumps$longitude, WaterPumps$latitude)
p <- geoParams(data = d, sigma_mean = 1.0, sigma_squared_shape = 2)
m <- geoMCMC(data = d, params = p)
surface_ring <- geoRing(params = p, data = d, source = s, mcmc = m)
gp_ring <- geoProfile(surface = surface_ring)
map <- geoPlotMap(params = p, data = d, source = s, surface = gp_ring, 
opacity = 1, breakPercent = seq(0,50,l=21))
map

bobverity/Rgeoprofile documentation built on May 12, 2019, 11:28 p.m.