Tools for Poisson Data
Bisquare weighted sum
Creates buffer of sp polygon object
Checks the fit of a Poisson Distribution
Count of points in polygon
Count of points within distance of polygon
Distance to nearest based on centroid
Poisson E-test
Get area of hexagon given length of side
Get dimensions of hexagon given area
Get width of hexagon given height
Inverse distance weighted sums
Kernel density of nearby areas
Strings of Near Repeats
Strings of Near Repeats using KDtrees
Predictive Accuracy Index
Summary Table for Multiple PAI Stats
Checks the fit of a Poisson Distribution
Power for Small Sample Exact Test
Creates vector grid cells over study area
Creates hexagon grid cells over study area
Small Sample Exact Test for Counts in Bins
Voronoi tesselation from input points
Estimates the WDD Test
Combines Multiple WDD Tests
Functions used for analyzing count data, mostly crime counts. Includes checking difference in two Poisson counts (e-test), checking the fit for a Poisson distribution, small sample tests for counts in bins, Weighted Displacement Difference test (Wheeler and Ratcliffe, 2018) <doi:10.1186/s40163-018-0085-5>, to evaluate crime changes over time in treated/control areas. Additionally includes functions for aggregating spatial data and spatial feature engineering.