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Subject: from ACM newsletter
From: Barry Wellman <[log in to unmask]>
Reply-To:Barry Wellman <[log in to unmask]>
Date:Mon, 12 Sep 2011 11:59:05 -0400

TEXT/PLAIN (44 lines)

*****  To join INSNA, visit  *****

MIT Researchers Create New Urban Network Analysis Toolbox
MIT News (09/06/11) Caroline McCall

Massachusetts Institute of Technology (MIT) researchers have developed an 
Urban Network Analysis (UNA) toolbox that can help urban designers and
planners describe the spatial patterns of cities using mathematical 
network analysis techniques.  "Network centrality measures are useful
predictors for a number of interesting urban phenomena," says MIT's Andres 
Sevtsuk.  The new toolbox, which is an open source plug-in for ArcGIS,
enables urban designers to compute five types of graph analysis measures 
on spatial networks, including reach, gravity, betweenness, closeness,
and straightness.  The tools utilize several features that make network 
analysis especially suited for urban street networks.  The tools account
for geometry and distances in the input networks, as well as incorporating 
buildings, which are used as the spatial units of analysis for all
measures.  The tools also allow buildings to be weighted based on their 
particular characteristics, such as volume, population, and general
importance.  In addition, the toolbox offers a set of analysis options to 
quantify how centrally each building is positioned in an urban
environment and how easily a user can access different amenities from each 

  Barry Wellman

   S.D. Clark Professor of Sociology, FRSC               NetLab Director
   Department of Sociology                  725 Spadina Avenue, Room 388
   University of Toronto   Toronto Canada M5S 2J4   twitter:barrywellman             fax:+1-416-978-3963
   Updating history:

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