VOTDIST.SML 

For vector object containing Voting Districts extracted from
1990 Census TIGER / Line files (which lack polygon attributes).  
Checks line attributes in the Geo_Area_Codes table
to find and verify voting district codes (string) for each polygon and
writes the result into the polygon attribute table "Districts".
The "Districts" Table must be set up previously
with fields "PolyID" (integer) and "Voting_Dist" (string),
with the Restriction option set to "Implied One-to-One"
(which automatically creates a "blank" record for each polygon).

Code verification involves determining the voting district code
for the "inside" side of each line making up a polygon, then
checking that all lines yield the same code for the polygon.
(Codes are stored in an array for checking, which requires that
the code character string be converted to a number first).
Polygons whose lines yield inconsistent voting district codes
are left unclassified, and an error statement is printed to the
console window and to an error log file.  
 
AUTHOR: Randy Smith, MicroImages, Inc.
CREATION DATE: June 24, 1997
REQUIRED TNTmips VERSION: 5.7 or later