add_location_counts: Add location counts to cluster location list

In gsClusterDetect: Utilities for Geo-Spatial Cluster Detection and Significance Classification

Add location counts to cluster location list

Description

Add counts of individual cluster locations. Operates on the output list of the compress_clusters() component. Calculates individual location counts for each cluster, and appends to the cluster location list.

Usage

add_location_counts(cluster_list, cases)

Arguments

cluster_list	output list from 'compress_clusters' (i.e. an object of class 'clusters'), which contains two elements: a data frame of cluster summary rows and a data frame of the locations in each cluster
cases	original data in 3-column format of location, count, date

Value

the cluster list from compress_clusters with individual location counts appended

Examples

case_grid <- generate_case_grids(
  example_count_data, example_count_data[, max(date)]
)
nci <- gen_nearby_case_info(
  cg = case_grid,
  distance_matrix = county_distance_matrix("OH")[["distance_matrix"]],
  distance_limit = 25
)
obs_exp_grid <- generate_observed_expected(
  nearby_counts = nci,
  case_grid = case_grid
)
cla <- add_spline_threshold(oe_grid = obs_exp_grid)
# use compress clusters to reduce
cla <- compress_clusters_fast(
  cluster_alert_table = cla,
  distance_matrix = county_distance_matrix("OH")[["distance_matrix"]]
)
# Now add the location counts
add_location_counts(
  cluster_list = cla,
  cases = example_count_data
)

gsClusterDetect documentation built on July 27, 2026, 5:09 p.m.