Package: ptools 2.0.0

ptools: Tools for Poisson Data

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.

Authors:Andrew Wheeler [aut, cre]

ptools_2.0.0.tar.gz
ptools_2.0.0.zip(r-4.7)ptools_2.0.0.zip(r-4.6)ptools_2.0.0.zip(r-4.5)
ptools_2.0.0.tgz(r-4.6-any)ptools_2.0.0.tgz(r-4.5-any)
ptools_2.0.0.tar.gz(r-4.7-any)ptools_2.0.0.tar.gz(r-4.6-any)
ptools_2.0.0.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
ptools/json (API)

# Install 'ptools' in R:

install.packages('ptools', repos = c('https://apwheele.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/apwheele/ptools/issues

Datasets:

nyc_bor - NYC Boroughs
nyc_cafe - NYC Sidewalk Cafes
nyc_liq - NYC Alcohol Licenses
nyc_shoot - NYPD Open Data on Shootings

On CRAN:

crime-analysis criminal-justice criminology

4.48 score 5 stars 12 scripts 248 downloads 25 exports 39 dependencies

Last updated from:31c972b81d. Checks:7 NOTE, 2 OK. Indexed: yes.

Target	Result	Time
linux-devel-x86_64	NOTE	147
source / vignettes	OK	314
linux-release-x86_64	NOTE	192
macos-release-arm64	NOTE	188
macos-oldrel-arm64	NOTE	153
windows-devel	NOTE	91
windows-release	NOTE	88
windows-oldrel	NOTE	98
wasm-release	OK	123

Exports:bisq_xy buff_sp check_pois count_xy dcount_xy dist_xy e_test hex_area hex_dim hex_wd idw_xy kern_xy near_strings1 near_strings2 pai pai_summary pois_contour powalt prep_grid prep_hexgrid scanw small_samptest vor_sp wdd wdd_harm

Dependencies:class classInt cli cpp11 DBI deldir e1071 glue gmp igraph KernSmooth lattice lifecycle magrittr MASS Matrix partitions pkgconfig polyclip polynom proxy RANN raster rbibutils Rcpp Rdpack rlang s2 sets sf sp spatstat.data spatstat.geom spatstat.univar spatstat.utils terra units vctrs wk

Spatial Feature Engineering with ptools

Creating Spatial Units of Analysis | Spatial Feature Engineering

Rendered fromspat-feateng.Rmdusingknitr::rmarkdown

Last update: 2023-02-07
Started: 2021-10-30

Citation

Development and contributors

Readme and manuals

Help Manual

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