Package: aoristic
Type: Package
Title: Generates Aoristic Probability Distributions
Version: 2.0.0
Authors@R: person("Jerry", "Ratcliffe", email = "jerryr@sas.upenn.edu",
    role = c("aut", "cre"))
Author: Jerry Ratcliffe [aut, cre]
Maintainer: Jerry Ratcliffe <jerryr@sas.upenn.edu>
Description: 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.
License: GPL-3
Encoding: UTF-8
URL: https://github.com/jerry-ratcliffe/aoristic
BugReports: https://github.com/jerry-ratcliffe/aoristic/issues
Imports: openxlsx, ggplot2, grid, lubridate, scales, tidyr, dplyr,
        stats
LazyData: true
RoxygenNote: 7.3.3
Depends: R (>= 2.10)
Suggests: testthat (>= 3.0.0)
Config/testthat/edition: 3
Config/pak/sysreqs: libicu-dev
Repository: https://jerry-ratcliffe.r-universe.dev
Date/Publication: 2026-08-10 01:40:19 UTC
RemoteUrl: https://github.com/jerry-ratcliffe/aoristic
RemoteRef: HEAD
RemoteSha: 0ec87b7b277933b656da804eea1bc94d8b7c2dcd
NeedsCompilation: no
Packaged: 2026-10-11 15:10:22 UTC; root