An Esri coordinate system is used by ArcGIS Enterprise to ensure that the ArcGIS content is placed in the correct geographic location. The coordinate system definition is used to properly display CAD files when used in ArcGIS software.
In drawings where no Esri coordinate system has been selected, the coordinate system of the first ArcGIS web layer added to the drawing will be used for the drawing, which may not be the coordinate system you want to use.
The best practice is to choose a projected coordinate system with a linear unit of measure that matches the units of your CAD drawing.
- On the ribbon, in the Project group, click the Coordinate System button
. - For Type, select Projected or Geographic.
- For Units, select the linear units based on the AutoCAD drawing units.
- For Category, select the map projection category.
- In the search box, type a term or well-known ID (WKID) to narrow your options.
- Select a coordinate system and click Set.
Note:
ArcGIS for AutoCAD requires its own coordinate system information separate from any AutoCAD coordinate system or geolocation information.
For more information, see the following: