TAZ Creation -Reply
by Murakami, Elaine <FHWA>
The file layout requirements for submitting TAZ equivalencies to the Census
Bureau are in the Reference Section (page 7) of the TAZ-UP User Manual. For
those who said they were not using TAZ-UP, we included a paper copy of the
directions with the mailout of the TIGER Line/98 CD.
The TAZ-UP software automatically creates this file. However, this
documentation is included specifically for those who are not using TAZ-UP.
>>> berwyned(a)mcs.com 08/21/99 11:58pm >>>
i received this and was wondering if any others could help with some
advice or insight. has anyone developed amls or other software to
support their TAZ efforts out side of TAZ-UP?
From: Kirk Eby <keby(a)tompkins-co.org>
Tompkins County (FIPS 36109) currently has its TAZs in Arc/Info format.
for 2 zones and one minor civil division change, all of the TAZs are
entirely on census blocks and MCDs. We have determined that for all but
census blocks, the TAZ number can easily be placed in a "table of
for the Tiger/Line 98 files. (If you are curious, all I did was take
centroids from the 98 Tiger files and use ArcView to spatially join them
the TAZ polygons from Arc/Info, thus allowing the TAZ number to be
populated in the Tiger 98 table.)
Rather than having to spend the time and resources to do the update in
and having to repeat in Arc/Info any changes that may be made in the
"non-equivalent" zones, the County would prefer to change only the
file, then create the required "table of equivalency." None of the
we have seen describes the format of this "table of equivalency" in any
Is there technical documentation of the format (required fields, file
etc.) of the required "table?" Also, has anyone already developed an
Avenue, or other application to automatically generate the required
is there at least a "sample" of the "table" somewhere?
J. Kirk Eby Tompkins County
GIS Project Leader Information Technology Services