2012

Quick Reference
Commands
IMAGE
Displays the External References palette.
IMAGEATTACH
Inserts a reference to an image file.
Scale Raster Images
You can control the size of a raster image in a drawing to match the scale of
the drawing.
You can specify the raster image scale factor when you attach the image so
that the scale of the geometry in the image matches the scale of the geometry
in the drawing. The default image scale factor is 1, and the default unit for all
images is “Unitless.” The image file can contain resolution information
defining the dots per inch (DPI), relating to how the image was scanned.
If an image has resolution information, the program combines this information
with the scale factor and the unit of measurement of the drawing to scale the
image in your drawing. For example, if your raster image is a scanned blueprint
on which the scale is 1 inch equals 50 feet, or 1:600, and your drawing is set
up so that 1 unit represents 1 inch, then in the Image dialog box under Scale,
select Specify On-Screen. To scale the image, you clear Specify On-Screen, and
then enter 600 in Scale. The image is then attached at a scale that brings the
geometry in the image into alignment with the geometry in the drawing.
If no resolution information is defined with the attached image file, the width
of the raster image is set to one unit. Thus, when the image file is attached,
the image width in units is equal to the raster image scale factor.
To attach and scale an image
1 Click Insert tab ➤ References panel ➤ Attach.
2 In the Select Image File dialog box, select a file name from the list or enter
the name of the image file in the File Name box. Click Open.
Attach, Scale, and Detach Raster Images | 1921