[Gdal-dev] OGR TIGER driver now supports TIGER/Line 2002 form at

Mark Phillips mbp at geomtech.com
Thu Jan 16 12:05:51 EST 2003


> I used OGR to convert Tiger/Line 2002 data to MapInfo TAB a while ago.  The
> data seems fine, but some errors were reported by OGR during the conversion.
> Is this to take care of those errors?

Dan,

How long ago did you do this conversion, and are you SURE that what you
had was really the TIGER/Line 2002 data?  It's my understanding that
the Census Bureau only just released data in the 2002 format in the last
couple weeks. (They released 3 sample files several months ago, which is
what I used while updating the OGR driver.)

If you're sure your data was in the 2002 format, I'd be curious where
you got it.  Also what was the version code for it?  The version code
is stored in columns 2-5, where the first column is 1 (not 0), of every
record, so you can pick it out of the first line, say, of any of your
files.

Anyway the main changes from the previous TIGER/Line formats are in
field definitions rather than geometry, so if you really did run 2002
data through the old driver, I'd expect that the geometry would probably
come out OK but that many of the field values would be garbled.

--Mark

Mark Phillips @ Geometry Technologies LLC
P.O. Box 1170, Black Mountain, NC  28711
Phone: 828-664-1748
mbp at geomtech.com       http://www.geomtech.com



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