[GRASS5] U.S. Census Tiger Files 2000...

Eric G. Miller egm2 at jps.net
Mon Jul 23 23:17:35 EDT 2001

On Mon, Jul 23, 2001 at 05:37:41PM -0400, Tom Rake wrote:
> I just tried a few v.tig.in.lndmk imports with 2000 data and didn't find a 
> problem with one dataset.

Hmm.  I couldn't get it to work right with the line or area classes.
Maybe I'll try a different data set.

> Ascii delimited dumps are fine with me.
> RIM I don't use and hasn't been useful when I tried.
> ***** My Other Random Comments
> I have been parsing the Tiger files separately using perl scripts driven by 
> data dictionary files which I copy from the Tiger specs. I use these to 
> stuff Postgres with selected data for each record type mostly keyed by TLID. 
> I have had problems doing a v.reclass on v.tig.in.basic data (TLID are too 
> big for C [] operations) so I build by own reclass map in perl and write 
> .att and .cat file directly.

Hmm, don't know why TLID's are too big.  If an "int" == "long", then it
should accomodate numbers up to 2147483647.  Are there TLID's that
exceed this?

> As a map company I class all chains that say are roads by name in a separate 
> category so I deal with each and every name. Thus I deal with categories 
> that number in the 10,000s or more.

You should rewrite the Tiger routines!  You obviously know TIGER files
better than I...  

Eric G. Miller <egm2 at jps.net>

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