With the help from Howard Simkowitz and Caliper Corp I was able to use TransCAD 3.5 and
their District Management tools for the Phase Two Census work. The key is their
"atomized polygons." Although the jury is still out, I feel obliged to other
TransCAD users in the group to report the procedures used in Indianapolis. The attached is
that initial effort. I will refine that document as we gain more experience in our
So far, I am impressed with the ease of Phase 2 Utilities. Due to the messy natures Census
segments, I have not yet to assess the accuracy of tagging operations. I have certainly
achieve significant time saving by tagging the existing TAZ layer to the TIGER polygons.
Please consider the attached very preliminary working document. I would welcome any
comments and questions.
Sweson Yang, AICP
Chief Transportation Planner
City of Indianapolis/Indianapolis MPO
(317) 327-5137 FAX: (317) 327-5103
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