Last week I was working with a map layer of water mains and at 1:2,400 scale the shorter mains were labeled with leader lines (because they were too short to show the entire label along the line). My map was initially using the Transverse Mercator based on NAD_83 coordinate system. Then I learned that I needed to make the map in a different coordinate system as well: WGS_84, so I could serve it and have it mash up on our ArcGIS Online Street Map. Read More...