Use this dialog box to specify a coordinate system for an exported GeoTIFF image data file.
If the image was inserted with GeoTIFF correlation and no coordinate transformation, a default GeoTIFF code is displayed. Otherwise, you can choose whether or not to assign a coordinate system to the image.
If you want to specify no coordinate system, leave the Code field blank.
If AutoCAD Raster Design toolset is running on AutoCAD Map 3D toolset or a GIS coordinate system enabled drawing is opened, the applicable code and description are displayed to assist you in identifying the comparable GeoTIFF code.
File Horizontal Coordinate System
- Code
-
The GeoTIFF code that identifies a coordinate system for the image.
- Select
-
Opens the Select Coordinate System dialog box where you can select a code by name, based on the region where it is used.
- Properties
-
Opens the GeoTIFF Coordinate System Properties dialog box to display the detailed properties of the coordinate system specified by the GeoTIFF code.
- Name
-
Specifies the name of the coordinate system referenced by the GeoTIFF code.
- Area of Use
-
Specifies the geographic region in which the coordinate system is used.
- Citation
-
Specifies additional details about the coordinate system. You can add µnotes here.
File Vertical Datum
This section is displayed only if you are exporting a digital elevation model (DEM).
- Code
-
Specifies the datum for elevation values in the DEM file.
- Vertical Units
-
Specifies Feet or Meters as the unit of vertical measure. The current setting in the DEM is shown here. You can convert the exported file to the other unit by changing this setting.
Drawing Coordinate System
- Code
-
The code used by AutoCAD Map 3D toolset to identify the coordinate system for the drawing.
- Properties
-
Displays additional technical details about the coordinate system.
- Description
-
Specifies basic information about the coordinate system.