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The map was then projected into the North American Datum of 1983 (NAD 83) State Plane Pennsylvania South FIPS 3702 coordinate system to better represent distances.The age-related data was divided into 7 classes using the quantile classification scheme.The thematic map was created by joining the census tract boundary attribute table to the Excel table using the census tract Federal Information Processing Standard (FIPS) code as the key field.

The demographic age-related data was downloaded as an MS Excel file from the Census Bureau’s American FactFinder site using the Census 2000 Summary File 1 (SF 1) 100-Percent Data as a Detailed Table.

The Census Tract boundaries were downloaded from the Census Bureau’s Topologically Integrated Geographic Encoding and Referencing (TIGER) files page for Philadelphia County.

Specifically, it is a choropleth map which means that color is used to represent classed values of a particular observation, in this case those aged 65 and over.

#LATEST THEMES FOR WINDOWS 8 FREE DOWNLOAD 2014 HOW TO#

What can you do with ArcView, the new mapping software now available in the Scott LRC? The possibilities seem endless, when we think about how to interpret population health in the context of geography.įor example, the thematic map below represents the percentage of residents aged 65 and over in Philadelphia County by census tract as of the year 2000.