Returns a list of zones to consider for
clustering. Each element of the list contains a vector
with the location ids of the regions in that zone.
Arguments
cases
The number of cases observed in each region.
pop
The population size associated with each
region.
w
A binary spatial adjacency matrix for the
regions.
ubpop
The upperbound of the proportion of the
total population to consider for a cluster.
check.unique
A logical value indicating whether a
check for unique values should be determined. The
default is FALSE. This is unlikely to make a
practical different for most real data sets.
Author
Joshua French
Details
The zones returned must have a total population less than
ubpop * sum(pop) of all regions in the study area.
References
Patil, G.P. & Taillie, C. Upper level set
scan statistic for detecting arbitrarily shaped
hotspots. Environmental and Ecological Statistics
(2004) 11(2):183-197.
<doi:10.1023/B:EEST.0000027208.48919.7e>