[R-sig-Geo] Cluster identification using space-time permutations

[Linda Pickle]

In response to:

 

Date: Mon, 30 Aug 2010 12:35:57 -0600

From: Jesse Whittington <jesse.whittingt...@gmail.com>

To: r-sig-geo@stat.math.ethz.ch

Subject: [R-sig-Geo] Cluster identification using space-time

      permutations

Message-ID:

      <aanlktikne0uycnywjiny34_xsq_kfyyt=zgmfnmhb...@mail.gmail.com>

Content-Type: text/plain

 

We've been using the SatScan space-time permutation scan statistic to

identify potential predation sites (ie clusters) from wolf GPS data. Are

there functions that I could use in R to run this cluster analysis?

 

Here's the reference:

 

Kulldorff et al. 2005 A SpaceTime Permutation Scan Statistic for Disease

Outbreak Detection

http://www.plosmedicine.org/article/info:doi/10.1371/journal.pmed.0020059

 

I've searched the RSiteSearch many times without luck.  Any help would be

greatly appreciated!

 

Jesse Whittington

Wildlife Biologist

Banff National Park

 

 

Dear Jesse:

Rather than trying to rewrite the algorithm, you could call the executable
module of SaTScan from R, I think.  There are 2 versions of SaTScan
available - one with a GUI interface and the other a callable executable.
See Kulldorff's web site  www.satscan.org for downloads. There is a tech
support email address there also, in case you have trouble, but those
programmers don't know R.

Hope this helps.

 

Linda Williams Pickle, Ph.D.

Principal and Chief Statistician

StatNet Consulting, LLC

 

Co-author with Dan Carr of Visualizing Data Patterns with Micromaps, CRC
Press 2010

Adjunct Professor, Departments of Geography & Public Health Science

The Pennsylvania State University

 


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