I have gps data in WGS84 geographic coordinates. I will use the gps data to build a line shape in ArcMap 10.0. The data falls in UTM 15N.
To get most accurate length of line, should I project the point data to the UTM and then build the line in the UTM. Or should I build the line in WGS84 then project the line data to the UTM. Or does it not matter? What are the effects?
If UTM data doesn't best preserve distance then I will add that UTM must be used.