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I would like to bring to the attention of the IDRISI-L members the release
of an update version of the CrimeStat spatial statistics program,
distributed by the National Institute of Justice's (NIJ) Crime Mapping
Research Center. CrimeStat is a free program for the statistical analysis
of crime and other incident locations, developed by Ned Levine & Associates
of Annandale, VA.. The program is Windows based and interfaces with many
desktop GIS programs. The aim is to provide supplemental statistical tools
to aid analysts and researchers in statistically describing the
distribution of incidents. Many of these tools are useful for geographers
(e.g., describing clusters of low-income housing recipients; describing
shifts in the spatial distribution of shopping trips; describing the
distribution of burglary incidents relative to the underlying population
distribution). There are also grid outputs which would allow them to be
read by IDRISI.
Version 1.1 is an update to the first version which was released in
November 1999 and fixes some problems associated with 1.0 (e.g., improved
performance in Windows 98), adds new database features, (e.g., the ability
to handle missing values), makes improvements to some of the existing
routines (e.g., edge corrections to Ripley's K statistic), and adds new
journey to crime calibration and estimation routines. The latter technique
is an adaptation of location/travel behavior theory. It could be used, for
example, to identify an optimal location to place a senior citizen center
given the distribution of seniors in a community and assumptions about
their travel behavior.
The program is fully documented with update notes and a new chapter on
journey to crime estimation. There are also sample data sets
provided. The new version can be downloaded from either NIJ's Crime
Mapping Research Center web site:
www.ojp.usdoj.gov/cmrc
or the web site of the NIJ archivist:
www.icpsr.umich.edu/NACJD/crimestat.html
Ned Levine, PhD
Ned Levine & Associates
Annandale, VA
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