I’m helping my organization convert from ArcGIS Desktop 10.8 to ArcGIS Pro 3.2. We have a local site-specific X, Y, Z coordinate system, in engineers feet (feet in tenths), based on a main datum (N1000, E1000, Z100). For ArcMap 9.3 and now ArcMap 10.8.2, we’ve maintained an undefined coordinate system in the Data Frame Properties, with feet as the map and display units, and our shapefiles have undefined coordinate systems too.
As I’m learning how to convert from ArcMap to ArcGIS Pro, I’ve found that ArcGIS Pro requires a coordinate system to be defined, to continue using GIS in the manner that we have. The main problem I can see now is that there are “no editable layers” since the “layer cannot be edited with an unknown coordinate system.”
It looks like a Local projection is the answer, I guess that I could define a Local coordinate system in ArcMap 10.8, and then import to ArcGIS Pro. Or I could do define the Local coordinate in ArcGIS Pro.
I made an attempt in ArcGIS Pro -- in Layers/Properties/Coordinate Systems, I set up a new “Local” coordinate system, with False Easting=0, False Northing=0, Longitude of Center=1000, Latitude of Center=1000. As far as I can tell, the coordinates show up correctly on the map, but then I will need to define the coordinate systems for each of the shapefiles.
Is it better to define the Local projection in ArcMap, or in ArcGIS Pro?