Coordinate Systems

Resources:

• WGS84 vs NAD83.fm (uvm.edu) – PDF article describing very well ellipsoid differences;
• Choose the right projection | Learn ArcGIS – basic explanation of projections with a learning plan;
  • Quick_Notes_on_Map_Projections_in_ArcGIS_nov2019.pdf (s3.us-east-1.amazonaws.com)
• How to choose a projection (cuny.edu) – a good write up explaining difference between transformations appropriate to measure distances or areas;

ESRI References:

• Projected Coordinate Systems (arcgis.com) – PDF file with the list of projections (ArcPro 2.9) and respective WKIDs