7.4.1 Output Format
This is the format of the files created by the Dump Image to File
item in the File menu. Output may be saved in one of several data
- XWD, or X window dump format which can be redisplayed with
xwud or translated to other formats through a multitude of
tools commonly available.
- PS Image Dump creates a postscript image containing a
pixel-by-pixel copy of the image area. This is good for obtaining a
hard copy. In fact, the Hard Copy operations invoked through the File menu use this format. However, the resolution of the screen is
probably lower than the resolution of your PostScript printer. Thus,
an image that looked fine on the screen may look coarse or jagged when
it is printed. Use the PS option to get PostScript
output that takes advantage of your printer's (or other PostScript
device's) superior resolution.
- PS creates a PostScript version of the image that was sent to the
screen. When you select this format and choose Dump Image to File
from the File menu, the current image is recomputed (using the current
properties). As each graphics command is sent to your X display, a
PostScript version of it is sent to the PostScript file. These files
can get extremely large, particularly for complex satellite images.
This format should probably only be used for such images when it is
critical to obtain high-quality hard copy. It may be used routinely
for overlays and filled contours. In most cases, the quality of these
images will be only marginally better than those created via
PS Image Dump, but the output files can be many times larger.
- GKS Metafile format is still experimental. It may or may not be
included in future releases of SatView, depending on its usefulness
and the success of this implementation.