I started lines from my feature class layer my map in Arcmap (Desktop), I then went on ArcGIS online and found that the length of the line that I was putting in ArcMap doesn’t match when I measure again in ArcGIS online. For example, a line that I put as 900’(planar) in Arcmap, shows up as 753’ online (I believe is in WG S84). How do I change my system in ArcMap, so that when I specify a length of 900’ in shows as 900’ online. Also if I change the measurement to Great Elliptic on ArcMap is shows the 754’. mY contractor measured the distance between my clean outs and the measurements line up with the length shown on ArcGIS online.
... View more