This week's assignment dealt with identifying and transforming projections and projection coordinate systems of map data so that data from different sources with differing projections (and sometimes unidentified projections) can be integrated accurately. My primary task was to take a shapefile with data provided with in an Albers Equal Area PCS format and to transform it (locally only, within the .mxd file I used for the project) to two other projection coordinate systems (while all three maintained the same geographic coordinate system and datum).
The resulting map shows all three coordinate sytems' version of Florida and its counties. Four counties were selected, and their areas calculated in each coordinate system in square miles, highlighting the differences between the systems. As two of the systems were created for the north and western portions of Florida (UTM 16 & State Plane Florida, North), they tended to have more distortion of areas calculated for counties in the southeast as compared to those in the northwest of the state.
Florida Displayed in Three Different Coordinate Systems
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