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# CITATION.cff file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "aoristic" in publications use:'
type: software
license: GPL-3.0-only
title: 'aoristic: Generates Aoristic Probability Distributions'
version: 2.0.0
doi: 10.32614/CRAN.package.aoristic
abstract: 'It can sometimes be difficult to ascertain when some events (such as property
  crime) occur because the victim is not present when the crime happens. As a result,
  police databases often record a ''start'' (or ''from'') date and time, and an ''end''
  (or ''to'') date and time. The time span between these date/times can be minutes,
  hours, or sometimes days, hence the term ''Aoristic''. Aoristic is one of the past
  tenses in Greek and represents an uncertain occurrence in time. For events with
  a location described by either a latitude/longitude or X/Y coordinate pair, and
  a start and end date/time, this package generates an aoristic data frame with aoristic
  weighted probability values for each hour of the week, for each observation. The
  coordinates are not necessary for the program to calculate aoristic weights; however,
  they are part of this package because a spatial component has been integral to aoristic
  analysis from the start. Dummy coordinates can be introduced if the user only has
  temporal data. Outputs include an aoristic data frame, as well as summary graphs
  and displays. For more information see: Ratcliffe, JH (2002) Aoristic signatures
  and the temporal analysis of high volume crime patterns, Journal of Quantitative
  Criminology. 18 (1): 23-43. Note: This package replaces an original ''aoristic''
  package (version 0.6) by George Kikuchi that has been discontinued with his permission.'
authors:
- family-names: Ratcliffe
  given-names: Jerry
  email: jerryr@sas.upenn.edu
repository: https://jerry-ratcliffe.r-universe.dev
repository-code: https://github.com/jerry-ratcliffe/aoristic
commit: 0ec87b7b277933b656da804eea1bc94d8b7c2dcd
url: https://github.com/jerry-ratcliffe/aoristic
date-released: '2026-08-10'
contact:
- family-names: Ratcliffe
  given-names: Jerry
  email: jerryr@sas.upenn.edu