With the raster file format driver, AutoCAD LT can export raster files in formats listed in the following table, with options and variants allowed within those standards.
The driver behaves as a plotter, which represents the width and height of the image in pixels. The screen sizes are correct for pixel aspect ratio. If you choose one of these screens, you should not have to calibrate to correct the results.
| File format | Options |
Device-independent bitmap |
Monochrome, 16-color, and 256-color |
TrueVision (TGA) Targa |
TGA 8, 16, 24, and 32 formats Bottom-up or top-down order of scan lines Noninterleaved, 2-to-1, and 4-to-1 line interleaving Image compression |
PCX format |
Monochrome, 16-color, and 256-color |
Tagged image file format (TIFF) |
Monochrome, 16-color, and 256-color |
After you select the output file format and supply the unique data for each configuration for that format, you are prompted to select the color resolution of the file.
You cannot modify the raster file export ADI 4.3 (plexport.dll) configuration at plot time by using a plot configuration parameters file (PCP). Nor can you do this by choosing Change in the Device and Default Selection dialog box in the Print / Plot Configuration dialog box. Instead, you must reconfigure the driver using Preferences. Also, the background color that the driver uses for generating images can be set only when the driver is configured to color images.
The BMP files on Microsoft Windows are device-independent bitmap files. They can be read and written by Windows Paint, and virtually all Windows applications import them. There is a configuration option for background color.
AutoCAD LT writes all of the commonly used TGA formats.
The PCX file format has as its ancestor the files written by the original PC Paintbrush program, Z-Soft, which currently markets various paint products for the PC.
TIFF (tagged image file format) is a raster file format jointly defined by Aldus and Microsoft. AutoCAD LT writes Little-endian (Intel byte order) TIFF files containing bitmaps, 4-bit pixels, or 8-bit pixels, depending on the color resolution you select.