Module 3: Data Collection with ArcGIS Field Maps and Introduction to Projections

 

This is a collection of 3 maps, all being of the state of Florida and highlighting Miami-Dade, Escambia, Polk, and Alachua. Each map uses a different map projection, which allows us to see the slight difference between each coordinate system. 

 

This Module began with learning how to use ArcGIS Field Maps for Data collection. I learned how helpful and impactful the Field Maps app can be, especially if used to inform the general public and professionals of issues in an area. I chose to collect data of signs on the Florida State University Campus in Tallahassee, Florida. After learning how to create domains and feature classes, which made the organization of sign quality easier, I got to walking and taking photos. I found two signs on the campus that needed serious repairs (dented, very scratched, or not legible), and other signs that were in perfect condition. This part of the module allowed me to see how helpful this application can be. If I could submit my findings to the FSU campus, they would be able to determine what signs need to be fixed. If a natural disaster were to occur, this app would be helpful to inform the public of unsafe areas (downed trees/power lines) and professionals of the areas that need assessment and repairs.

The second section of this module consisted of learning about projections. I learned that projections can actually cause map distorted due to the transformation from a 3D globe to a 2D map. A map projection is the mathematical transformation of a 3D surface to a flat, 2D surface. I learned how to reproject maps, and we used the UTM16, Albers, and State Plane projections which allowed for me to see the slight differences/distortions between each one. I learned how to use the "define projection" tool to change a spatial reference to a specified coordinate system.