# Tools for Poisson Data

## Documentation for package ‘ptools’ version 2.0.0

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

bisq_xy | Bisquare weighted sum
buff_sp | Creates buffer of sp polygon object
check_pois | Checks the fit of a Poisson Distribution
count_xy | Count of points in polygon
dcount_xy | Count of points within distance of polygon
dist_xy | Distance to nearest based on centroid
e_test | Poisson E-test
hex_area | Get area of hexagon given length of side
hex_dim | Get dimensions of hexagon given area
hex_wd | Get width of hexagon given height
idw_xy | Inverse distance weighted sums
kern_xy | Kernel density of nearby areas
near_strings1 | Strings of Near Repeats
near_strings2 | Strings of Near Repeats using KDtrees
nyc_bor | NYC Boroughs
nyc_cafe | NYC Sidewalk Cafes
nyc_liq | NYC Alcohol Licenses
nyc_shoot | NYPD Open Data on Shootings
pai | Predictive Accuracy Index
pai_summary | Summary Table for Multiple PAI Stats
pois_contour | Checks the fit of a Poisson Distribution
powalt | Power for Small Sample Exact Test
prep_grid | Creates vector grid cells over study area
prep_hexgrid | Creates hexagon grid cells over study area
small_samptest | Small Sample Exact Test for Counts in Bins
vor_sp | Voronoi tesselation from input points
wdd | Estimates the WDD Test
wdd_harm | Combines Multiple WDD Tests