2011

To see how your correlation settings translate to AutoCAD Map 3D units,
select the Insertion tab. To preview the settings in the drawing, click Apply.
NOTE To modify correlation settings after you insert an image use the Properties
palette.
Correlation Sources
When you insert an image, AutoCAD Map 3D searches for correlation files
for the image and displays them in the Correlation Source list of the Image
Correlation dialog box. You may see the following sources listed.
■ World File (Various file extensions)
■ Resource File (.res) — You can specify an alternate location for resource
files. See
Setting the Resource Files Directory (page 251).
■ Tab File (.tab)
■ Image File — For certain types of images, correlation data can be saved as
part of the image file. These file types include RLC, IG4, IGS, GeoTags in
GeoTIFF, or HDR File in GeoSPOT.
■ Default — The values that you set on the Image Defaults tab of the Raster
Extension Options dialog box.
See also:
■ Modifying the Correlation Settings for an Image (page 501)
To correlate an image during insertion
1 Insert an image (page 460)
2 In the
Image Correlation dialog box (page 1873), do one or more of the
following:
■ Select a correlation source.
■ Type new coordinates for the image frame. The insertion point
represents the lower-left corner of the frame.
■ Scale the image.
For example, to make the image twice as large, type 2 in the Scale box.
■ Rotate the image. The units of the rotation value depend on the setting
of the AUNITS system variable.
464 | Chapter 3 Bringing In Data