shrug-l: FL data for Address Geocoding

Mon Apr 2 08:44:12 EDT 2007

Although the parcel database is often the "best available" database for
geocoding, it is often not the best overall. Parcels usually have two
addresses - the owner address and the parcel address. Of these, the
owner address is almost always the most correct. The reason for this is
that parcel addresses are superfluous as the parcel number serves as the
location ID for the property appraiser. The owner address is the one
that is usually best maintained as that is the address to which the tax
bills are sent. 

The best county data (if available) is an address point database created
by the county addressing staff in which there is only one address (the
property address). Not all counties have them. You can download Seminole
County's address points (known as Situs) from our web site,
http://www.seminolecountyfl.gov/pd/commres/gis/layerbib2.asp .  If you
are going with a professional system I would recommend Centrus.

Heather Wolfe
Sr. GIS Analyst, Planning & Development
Seminole County Government
1101 E. First St.
Sanford, FL 32771

Office 407-665-7378
Fax 407-665-7412
HWolfe at seminolecountyfl.gov
www.seminolecountyfl.gov

________________________________

From: Yurong Tan [mailto:tany at gisgo.com] 
Sent: Friday, March 30, 2007 5:08 PM
To: 'Benton Belcher'; lance.peterson at dot.state.fl.us
Cc: SHRUG-L at lists.dep.state.fl.us
Subject: RE: shrug-l: FL data for Address Geocoding

I got a commercial geocoding package a couple years ago for $14.000
first year and thereafter $4,000/yr for continuing update the addresses
database because that zip codes are updated by the USPS monthly (zip
deletion, splitting, merging, ...), new addresses are added all the
time, counties are split or merged, etc..  Generally speaking, I am
happy about it.  However, after a couple years in geocoding tens, if not
hundreds, of millions of addresses each year, I sometimes found that
addresses can be misplaced miles away or out of State including some in
Florida using the current geocoder.  This happened even after the
addresses were checked and then corrected if necessary, against the
latest NCOA (national change of address).

Interestingly, those "problematic addresses" were all put right on the
money through Google Map.  So I am currently evaluating Navteq which is
said to be the backbone for Google map address searches.  

Geocoding software venders normally each have their own "proprietary
criterion" of addresses matching and some might have implemented what
they called "aggressive intelligence" to give an output for addresses
that do not have an exact match.  This can be problematic because it
gives you a wrong location for those addresses rather than simply not
geocoding it!!!.  

If your area is generally a County, I would suggest getting an address
database from a local source (Police, Sheriff, County property appraise,
or the local private vender).  If your project or application deals with
emergency or dispatching issues, you might need to consider some other
factors because one misplacement of an address can result in life/death.

Good luck.   

-----Original Message-----
From: shrug-l-bounces at lists.dep.state.fl.us
[mailto:shrug-l-bounces at lists.dep.state.fl.us] On Behalf Of Benton
Belcher
Sent: Wednesday, March 21, 2007 1:49 PM
To: lance.peterson at dot.state.fl.us
Cc: SHRUG-L at lists.dep.state.fl.us
Subject: RE: shrug-l: FL data for Address Geocoding

I believe that it is Navteq for streets, Group 1 (Pitney-Bowes) for
parcel centriod and building footprint.  I will check with the Virtual
Earth/MapPoint Team and report back.  It may be stated in their EULA.

Benton

________________________________

From: lance.peterson at dot.state.fl.us
[mailto:lance.peterson at dot.state.fl.us]
Sent: Wed 3/21/2007 1:21 PM
To: Benton Belcher
Cc: SHRUG-L at lists.dep.state.fl.us
Subject: RE: shrug-l: FL data for Address Geocoding

Do you know what source is for the Microsoft GIS data? I took a look at
their site and can't find the GIS metadata info that I would normally
expect to find. 

Lance Peterson

"Benton Belcher" <benton.belcher at goisc.com> 
Sent by: shrug-l-bounces at lists.dep.state.fl.us 

03/21/2007 12:31 PM 

To

"Tripp Corbin" <tcorbin at keckwood.com>, "Yasar Korkmaz"
<Yasar.Korkmaz at citizensfla.com>, <SHRUG-L at lists.dep.state.fl.us> 

cc

Subject

RE: shrug-l: FL data for Address Geocoding

Check out the Microsoft MapPoint Web Service: 

http://www.microsoft.com/mappoint/products/webservice/features.mspx
<http://www.microsoft.com/mappoint/products/webservice/features.mspx>  

The MapPoint Web Service utilizes the Group 1's roof top geocoding for
batch processing.  Very accurate and 99.9% uptime. 

Also, you could use the Virtual Earth API for single point geocoding: 

http://www.microsoft.com/virtualearth/components.mspx
<http://www.microsoft.com/virtualearth/components.mspx>  

"Geocoding. Get the most accurate locations around the world with the
highest quality geo-coders, such as Group1 GeoStan geocoding engine in
the U.S." - MSFT VE Site 

No, need to purchase data or pay outrageous licensing costs for storing
it :-) 

Benton 

________________________________

From: shrug-l-bounces at lists.dep.state.fl.us on behalf of Tripp Corbin
Sent: Wed 3/21/2007 12:07 PM
To: Yasar Korkmaz; SHRUG-L at lists.dep.state.fl.us
Subject: RE: shrug-l: FL data for Address Geocoding

You might want to look on the Geography Network at
www.geographynetwork.com <http://www.geographynetwork.com/> . 

Tripp Corbin, MCP, CFM, GISP 
Associate Vice President, GIS/Mapping 
ESRI Authorized Instructor 
Keck & Wood, Inc. 
www.keckwood.com <http://www.keckwood.com/>  
(678) 417-4013 
(678) 417-8785 fax 

Keck & Wood, Inc offers instructor led and virtual training for ESRI's
ArcGIS & ArcView software.
Please visit www.keckwood.com <http://www.keckwood.com/>  for more
information including a schedule of upcoming classes. 

-----Original Message-----
From: shrug-l-bounces at lists.dep.state.fl.us
[mailto:shrug-l-bounces at lists.dep.state.fl.us] On Behalf Of Yasar
Korkmaz
Sent: Wednesday, March 21, 2007 12:06 PM
To: SHRUG-L at lists.dep.state.fl.us
Subject: shrug-l: FL data for Address Geocoding

Hello everyone: 
I am looking for the most updated FL data for address geocoding
(regardless of the price). I would appreciate greatly if you could share
your knowledge about and/or experience with the existing,
most-up-to-date (i.e. best :-)) geocoding data available for Florida. 
Thanks in advance, 

Yasar Korkmaz 
Geographic Information Systems Analyst 
Citizens Property Insurance Company 
2101 Maryland Circle 
Tallahassee, FL 32301 
(850) 521 8315 
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-****Florida has a very broad Public Records Law. Virtually all written communications to or from State and Local Officials and employees are public records available to the public and media upon request. Seminole County policy does not differentiate between personal and business emails. E-mail sent on the County system will be considered public and will only be withheld from disclosure if deemed confidential pursuant to State Law.****-

-****Florida has a very broad Public Records Law. Virtually all written communications to or from State and Local Officials and employees are public records available to the public and media upon request. Seminole County policy does not differentiate between personal and business emails. E-mail sent on the County system will be considered public and will only be withheld from disclosure if deemed confidential pursuant to State Law.****-
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