Combine Data with Different Coordinate Systems

Map files and feature sources you use can use different coordinate systems. When you bring objects into a map from other sources, AutoCAD Map 3D automatically transforms those objects to the coordinate system of the current drawing.

Open each drawing directly, without attaching it to a map

Specify the coordinate system for each drawing

The drawings are saved with the assigned coordinate systems

Create a base drawing, into which you add objects from other drawings and feature sources

All data you add to this map is transformed to this coordinate system

Connect to the geospatial feature sources for the map

Attach the drawings that contain the objects to add to the map

Use a query to bring in objects from the attached drawings

The added features and the queried drawing objects use the new coordinate system. The original sources are unchanged.