[OKGIS] Geocoding Question

[bnesom at meshekengr.com]

Good other consideration Mike. 
We accomplished this two ways. Splitting the segment shere required (employ as rarely as possible) and as you described the actual versus theoretical addresses. However the actual prescribed as a standard can be a big problem in high growth areas. Where the existing actual addresses don,t allow adding for new building or development. 
Agaon contactme if you have further questions. 
Brad
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-----Original Message-----
From: <mike.deming at okc.gov>

Date: Fri, 7 Mar 2008 09:30:44 
To:<okgis at gis.gis.ou.edu>
Subject: RE: [OKGIS] Geocoding Question


Clean Clean DocumentEmail MicrosoftInternetExplorer4  I want to follow up on this discussion and, in particular, with Todd’s diagram by raising a concern of my own.   Most street address table will have left and right ranges for Example Ave as 2000-2098 and 2001-2099, while most areas within (particularly older residential areas) only have addresses up to 51 or so. This results in 2051 Example Ave being placed mid-block rather than at the end of the block and all the address points being clustered toward the low end.   In thinking about this there appear to be two ways to address this. 1.       Going in and changing all the address ranges in a street attribute (probably too cumbersome and might not allow for case where someone gets an address such as 777 Example Ave for their gambling casino. 2.       Going into the table of addresses to be matched and somehow converting 2051 Example Ave to 2099 Example Ave.   Any suggestions/thoughts?   -----Original Message----- From: okgis-bounces at gis.gis.ou.edu [mailto:okgis-bounces at gis.gis.ou.edu] On Behalf Of Todd Fagin Sent: Friday, March 07, 2008 9:13 AM To: 'Oklahoma GIS Community' Subject: RE: [OKGIS] Geocoding Question   Brett,   Geocoding of a line is typically based on to and from left and right addresses, as well as other relevant information (e.g. street name) in an attribute table.  In order for the software to properly estimate an address along a street segment, it must “know” the starting and ending point of a street.  As such, line segments do have direction.    For instance, in the screen capture below, I have two “road” segments, each the same (approximate) length and with the same to and from left and right address ranges.  However, the lines have different orientation.  When I geocode the same address number, it appears on opposite sides of the line, depending on direction.  Additionally, if you place the point on either the left or right side of the road segment (which I didn’t do in my example below), one or the other (depending on which line’s orientation is incorrect) will appear on the wrong side of the street.       That said, you do not necessarily have to draw the line in the correct direction.  If you are editing in ArcMap, there is a Flip function that will change the orientation of the line segment.  Additionally, if you know the direction of the line, you can enter your “from” addresses as “to” addresses and vice versa.  However, that is exceptionally sloppy, in my opinion, and opens you up to a higher probability of mistakes.    The best rule of thumb is to ensure your lines have appropriate orientation, whether it drawing the lines in the correct direction or “flipping” the lines.    Todd Fagin   Coordinate Solutions, Inc. 501 N.E. 15th St. Oklahoma City, OK 73104 405.740.4324 (voice) 904.471.5548 (fax) www.coordinatesolutions.com         ---------------- From: okgis-bounces at gis.gis.ou.edu [mailto:okgis-bounces at gis.gis.ou.edu] On Behalf Of Brett Williston Sent: Friday, March 07, 2008 8:35 AM To: Oklahoma GIS Community Subject: [OKGIS] Geocoding Question    Hello!     We are working on our map layer for our 911 addressing.     Do I have to draw the lines in the direction that the addresses run?     For example, if the addresses get larger running east, do I have to draw the line starting at the most western point of that road to the east?     I hope that makes sense.     Respectfully, Brett Williston IT Director Rogers County Courthouse 219 S. Missouri  Claremore, OK 74017 (918) 342-1362