GEOG 121 Project 6:
The name of my home county is Centre and it is in Pennsylvania. The
gecoded location on my map is 970 E McCormick Ave which is the street address that
I live at. I live in the neighborhood called Valimont. In particular I'm the first
lot in the Valimont II section. This is on your left if you come to McCormick from
Penn State along University Drive. I also back into Walnut Spring Park which is at
the end of Easterly Parkway. The lines and the polygon background of the map are made
from Topologically Integerated Geographic Encoding and Referencing(TIGER)/line data.
The mark indicating the location of my address was made using the Address Matching function
in ESRI ArcExplorer 2.0 software using geocoding. This is a process which takes tabular
data and uses it to show what street that the house is on based on the boundaries of
that street. One of the features and attributes that are included in the TIGER database
that enable automatic geocoding is that a street is a chain and at the end of the chain
are two ending points called nodes. The location of the street depends on if the house
address is even or odd and which position on the street that the house is on with respect
to the to node and the from node. In the image you can see that my house is on the right
side of the road.
TIGER/line data supports the census because when the census data is associated with the road lines, or polygon areas of the county TIGER/line map, it can be used to identify roads, houses and other buildings located on those roads. In addition to supporting the U.S. Census, the TIGER/LIne data is used by MapQuest.com(www.mapquest.com) to provide users with map and driving directions from one location to another. MapQuest has it's own database of addresses which is associates with the TIGER/Line data in the same way the U. S. Census does.
|DiBiase, David (2002) Understanding Geographic Data. Module 6: Census Data. ESRI Virtual Campus http://campus.esri.com Accessed 5 December 2004.|
|Environmental Systems Research Institute (2004) The Geography Network. http://www.geographynetwork.com/ Accessed 5 December 2004.|
|Environmental Systems Research Institute (2004) ArcExplorer -- ESRI's Free GIS Data Viewer. http://www.esri.com/software/arcexplorer/index.html/ Accessed 5 December 2004.|
|MapQuest Inc(2004). http://www.mapquest.com/ Accessed 5 December 2004.|