dan goldberg -
November 04, 2009
We have made significant changes to the internal structure and processing algorithms within the Texas A&M WebGIS Geocoding Engine.
To accommodate these changes, the Texas A&M WebGIS Service API's have all been upgraded to version 2.92. The geocoding API URLs have been updated and are listed on the geocoding API page.
All users should begin migrating their web services calls to use these new versions. A new desktop geocoding client that utilizes these new API's is also available. Note that there are two new required Microsoft components that must be installed before the desktop client will function.
The most significant changes to the Texas A&M WebGIS Geocoding Engine and API are the following:
- The US Census Bureau Tiger/Line 2008 Files have been added as a reference data set for the whole US.
- The US Census Bureau Tiger/Line 2005 Files have been removed as reference data set.
- A match score output field has been added. This score is based on weighted Levenshtein edit distances.
- Three new fields have been added to describe the output quality in terms of the level of geography matched, the interpolation type used, and the interpolation sub-type used.
- The quality output field has been removed.
- The API XML output format has been reformatted from its previously flat structure into a new tree structure.
- The API XML output format now lists the queries performed against each reference data source along with all candidate matches and their match scores.
- A "Retry as XML" option is now visible on historical geocoding transaction records within a user's account that will show the processing details for a particular query.
Please let us know if you have any questions, run into any problems, or need any help.