From Matthew.Christenson at acxiom.com Thu Feb 11 09:44:29 2010 From: Matthew.Christenson at acxiom.com (Christenson Matthew - mchris) Date: Thu, 11 Feb 2010 10:44:29 -0600 Subject: [Explorer-geocoder] Explorer Geocoder Problem? Message-ID: I'm having a problem with the Open Source Geocoder that seems to cause some input records to receive an incorrect "CensusID." If this is a previously known issue, I would appreciate being pointed in the direction of any discussion and/or documentation. If not, I would appreciate if someone would confirm my finding and suggest potential remedies. There are apparently some addresses in the U.S. that are close to a state border that are physically in one state but have a USPS address of another state. One example I'm working with is 7320 N Barker Circle, Fort Campbell, KY, 42223, an address physically located in Tennessee. What happens in these cases is that the State FIPS code that is returned is simply a conversion of the state abbreviation in the input address. Conversely, the County FIPS, Census Tract, and Census Block codes that are returned reflect the physical location. The Census ID being returned for the address above (using the most recent Dynamap build delivered with Alteryx) is "211251014001058," which is invalid - i.e., is not a Block id that the U.S. Census Bureau would recognize. It should be "471251014001058." Behind the scenes, my sense is that this is the case because the State FIPS code is carried in a small table along with City and Zip information (CityStatePostcode2.csv in the pre-build example files), whereas the County FIPS, Census Tract, and Census Block codes are carried in the larger street segment table (StreetSegment2.csv in the pre-build example files). To my mind, the obvious fix would be to add a State FIPS field to the street segment table and return the value from there. Thank you in advance for any additional insight or suggestions you might have. *************************************************************************** The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. Thank You. **************************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserv.extendthereach.com/pipermail/explorer-geocoder/attachments/20100211/693ada31/attachment.html