The GS_FIND_PREFER_ZIP_OVER_CITY property allows a user to prefer candidates that match to the input ZIP Code over candidates that match to the input city. GeoStan creates multiple search areas when the input city and ZIP Code do not correspond and this feature helps establish how the candidates should be scored.
When there is more than one candidate in the input ZIP Code, some attempt is made to alleviate multiple candidates for a match, or, where all the candidates get the same lastline score. If a candidate also matches the city and/or preferred city, that candidate gets a better score. Matching to just preferred city is a lesser score than matching both.
For example:
Input Address:
24 GLEN HAVEN RD
Input Last Line:
NEW HAVEN CT 06513
Found:
24 GLEN HAVEN RD
NEW HAVEN, CT 06513-1105Possible candidates:
score pref.last line city
2 98 GLEN HAVEN RD 06513-1105 S 0.8100000 NEW HAVEN * best match
24 98 GLEN HAVEN RD 06513-1248 S 2.2500000 EAST HAVEN
16 66 GLEN RD 06511-2825 S 46.3925000 NEW HAVEN
2 86 GLEN PKWY 06517-1415 S 52.1525000 HAMDEN
2 28 GLEN RD 06516-6509 S 52.1525000 WEST HAVEN
2 98 GLENHAM RD 06518-2517 S 75.0100000 HAMDEN
2 72 GLEN VIEW TER 06515-1519 S 97.0900000 NEW HAVENWhen there is more than one candidate, candidates matching the input ZIP Code score better.
Input Address:
301 BRYANT ST
Input Last Line:
SAN FRANCISCO CA 94301
Found:
301 BRYANT ST
PALO ALTO, CA 94301-1408Possible candidates:
score pref.last line city
301 301 BRYANT ST 94301-1408 S 3.2400000 PALO ALTO * ZIP preferred match
301 305 BRYANT CT 94301-1401 S 28.2400000 PALO ALTO
300 306 BRYANT CT 94301-00ND T 35.6600000 PALO ALTO
301 301 BRYANT ST 94107-4167 H 39.6900000 SAN FRANCISCO * default match
301 319 BRYANT ST 94107-1406 S 39.6900000 SAN FRANCISCOWhen there is more than one candidate, candidates that match the ZIP Code search area score better. The ZIP Code search area is the finance area for the input ZIP Code.
This example is with GS_FIND_SEARCH_AREA set to FINANCE. With GS_FIND_SEARCH_AREA set to CITY the match is made to EAST AURORA 14052 as there is no candidate in the 14166 input ZIP Code.
Input Address: 100 MAIN ST
Input Last Line: EAST AURORA NY 14166
Found:
100 MAIN STDUNKIRK, NY 14048-1844
Possible candidates:
score pref.last line city
100 198 MAIN ST 14048-1844 S 3.2400000 DUNKIRK * same finance as input
ZIP 14166
100 168 MAIN ST 14052-1633 S 39.6900000 EAST AURORAThis example is with GS_FIND_SEARCH_AREA set to 0 (CITY).
Input Address: 4200 arapahoe
Input Last Line: denver co 80301
Found:
4200 ARAPAHOE AVE
BOULDER, CO 80303-1164Possible candidates:
score pref.last line city
4200 4210 ARAPAHOE AVE 80303-1164 S 38.7400000 BOULDER *same city as
input ZIP 80301
4200 4210 ARAPAHOE RD 80303-1164 S 40.7000000 BOULDER (A06)
4200 4298 E ARAPAHOE PL 80122-00ND T 62.0900000 LITTLETON
4200 4498 E ARAPAHOE RD 80122-00ND T 62.0900000 LITTLETON
4181 4499 E ARAPAHOE RD 80122-00ND T 68.3400000 LITTLETON