OGR Needs update for TIGER 2002

[warmerdam]

-----Original Message-----
> From: Robert LaMacchia [mailto:rlamacchia@geo.census.gov]
> Sent: Friday, June 14, 2002 10:12 AM
> To: Terry Elmore; Robert Schweitzer; Robert Freimer; Rajesh
> Ramachandran; Marilyn Otto; M Deel; Kimball W. Brace; Kenneth E. Tozier;
> Howard Simkowitz; Howard L. Slavin; George H. Meier; Gaye Hamilton; Gary
> D. Joiner; Fred Hejazi; Frank Rocco; Dean Stoecker; David P. Beddoe;
> David J. Kingsbury; Dave Patterson; Dale Harris; Dale Lutz; Cory Tucker;
> Clay Grant; Bruce Ralston; Bernie Peterson; Allan R. Sutherlin
> Subject: 2002 TIGER/Line File Format
> 
> 
> I am attaching a PDF with the 2002 TIGER/Line format.  As 
> previously mentioned, there are major structural changes in this 
> layout.  We have eliminated some record types (3 and 9) and added 
> others (B,E,T,U).  We have rearranged the location of the data 
> fields.  We have added a large number of reserved fields on some 
> of the record types to account for fields we expect to use in 
> 2003 or later -- fields that will accommodate, for example, the 
> new MA delineations expected from OMB next year based on their 
> new core-based statistical areas.  Fields are also set aside to 
> accommodate information we expect to have in files that have been 
> processed through the MAF/TIGER Accuracy Improvement Program.  I 
> strongly urge you to have your updated translators recognize at 
> least the following reserved spaces so that users will have 
> immediate access to them should we implement these fields before 
> the fall of 2003:
> 
> RS-A2 -- ZCTA (current)
> RS-A3 -- ZCTA 3-digit (current)
> RS-A10 -- County based CBSA FIPS Code (current)
> RS-A11 -- Combined Statistical Area FIPS Code (current)
> RS-A12 -- New England City and Town Area (NECTA) FIPS Code (current)
> RS-A13 -- Combined NECTA FIPS Code (current)
> RS-A14 -- Metropolitan Division FIPS Code (current)
> RS-I1 -- NHD Com ID
> RS-I2 -- Local ID
> 
> Another field that the translator should recognize is RS-A1.  We 
> set aside this field in case we need to use a two character field 
> (instead of one character) for the current suffix.  
> 
> Also, please note that we have added a permanent zero-cell 
> identification number to each node (TZID).  The TZID is similar 
> in concept to the TLID and appears on RT I and the new RT T.  The 
> possible range for the TZID, with the highest value used for that 
> range, appears in RT R.
> 
> One of the major difficulties data users had last decade was the 
> mixing of "current" state and county codes with the census tract 
> and block numbers which are uniquely identified only by the 
> census state and county codes.  For this reason, RT 1 continues 
> to provide Census 2000 codes even though the distribution unit 
> will be current county.  Thus, it is possible that to fully match 
> all the Census 2000 block numbers in a Census 2000 county a user 
> will need to reference multiple "current" 2002 TIGER/Line files.  
> An example of this will be Broomfield County, CO which was 
> created last year (after Census 2000) from parts of four other 
> Colorado counties. 
> 
> We expect that the 2002 TIGER/Line files will contain a small 
> number of counties with improved road coordinates based upon work 
> that we have been doing in the past year.  Tentatively, we expect 
> these counties to be included (list is subject to change):
> 
> 10001	Kent, DE
> 10003	New Castle, DE
> 10005	Sussex, DE
> 12117	Seminole, FL
> 24015	Cecil, MD
> 24039	Somerset, MD
> 24041	Talbot, MD
> 24510	Baltimore City, MD
> 39011	Auglaize, OH
> 39033	Crawford, OH
> 39039	Defiance, OH
> 39041	Delaware, OH
> 39051	Fulton, OH
> 39069	Henry, OH
> 39109	Miami, OH
> 39137	Putnam, OH
> 39139	Richland, OH
> 39161	Van Wert, OH
> 39171	Williams, OH
> 46065	Hughes, SD
> 
> If you have any questions, please let me know.  We are working on 
> the full documentation, but it will not be ready until the end of 
> the summer. We expect the 2002 TIGER/Line files to be available 
> early in the last calendar quarter of this year.
> 
> Bob LaMacchia
> Geography Division
> rlamacchia@geo.census.gov

[warmerdam]

Notes on TIGER 2002 (Chapter 6)

[warmerdam]

Completed in January.