A Few Map Projections in GIS

Lab this week mainly detailed when and how one would use the various map projection types within ArcGIS. We compared the area (in square miles) of four respective counties within the state of Florida, for each projection type. The varying values that are displayed within the attribute tables, which I have provided on my map, show that each projection type is slightly different from the other. And not only that, but it displays the data inconsistently, even though the data material is the same. We also touched on how to reproject a map and how to define a map that is classified as undefined.

Three different projections of the state of FL:

• Albers
• UTM Zone 16
• State Plane N