Module 3: Projections

Projections Lab for Florida Counties

In module 3 we learned how to use projections and why they are important when determining what to use in every project and why they need to be consistent. Different projections can change the outcomes of measurements by a lot. As you can see by the graph, the largest difference between certain projections and counties was nearly 20 miles, which was Miami-Dade County and between Albers and UTM 16 N. When using different projections, data can be located in different spaces if you don't use the use the same one for your project. Learning how to use projections properly and effectively is going to take time to get used to. The different maps show the different projections used (Albers, UTM 16 and Florida State Plane N) and within those three maps are the four counties selected (Alachula, Escambia, Miami-Dade and Polk). Below that is the graph showing the difference in each county with each projection used. Some vary greatly and some are fairly close in size.