Date: Wed, 21 Sep 2005 18:49:59 +0530
Reply-To: Deepak Jethwani <firstname.lastname@example.org>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Deepak Jethwani <email@example.com>
Subject: 2nd Attempt: Grouping Zip Codes
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This is my second mail to the list. I am still struggling with the
We have a list of zip codes and a table that lists out the drive time
distance from one zip code to the other in the following format.
Zip1 Zip2 Zip3 .....
Zip1 0 5 15
Zip2 5 0 12
Zip3 15 12 0
Now, we need to group the zip codes which fall within 10 minutes of drive
time distance from a zip code into a group.
The problem is actually about identifying starting zip codes around which
to build these groupings.
I would really welcome any comments from anyone who has faced a similar
problem or any suggested approaches that come to mind for a possible
solution or any suggested texts which I can use to tackle this problem.