X Window Dump
X Window dump files can be displayed on X Window workstations
xwud utility and converted to a printable form
xpr utility. These utilities are available in
most X Window installations.
The X Window system can produce dump files in a variety of formats.
PGPLOT uses an image format of ``ZPixmap'' with 8 bits per pixel.
- Device type code
/WD (landscape orientation),
/VWD (portrait orientation).
- Default file name
An X Window dump file can contain only a single image, so for multi-page plots
PGPLOT creates additional files. If the supplied file name contains
the character #, the file name is derived by replacing this
character with the current page number. If the supplied file name does not
contain a #, PGPLOT appends an underscore and the page number for the
second and subsequent pages, e.g.,
PGBEG file name: File names used:
pgplot#.xwd pgplot1.xwd, pgplot2.xwd, pgplot3.xwd, ...
pgplot.xwd pgplot.xwd, pgplot.xwd_2, pgplot.xwd_3, ...
- Default view surface dimensions
- /WD: 850 by 680 pixels (nominally 10.0 by 8.0 inches)
/VWD: 680 by 850 pixels (nominally 8.0 by 10.0 inches)
These defaults can be overridden by specifying environment
variables, or by calling routine PGPAP. The maximum size is limited
only by available memory.
- PGPLOT assumes that the device resolution is 85 pixels/inch, but
the actual resolution will vary depending on the display device.
- Color capability
- Color indices 0--255 are accepted, with standard defaults for color
indices 0--15. If the color representation of a color index is changed,
it affects all pixels drawn in that color on the current page.
- Input capability
- Environment variables
PGPLOT_WD_WIDTH : width of image in pixels (default 850)
PGPLOT_WD_HEIGHT : height of image in pixels (default 680)
- File format
- X Window Dump files are binary files.
- Scott Allendorf, 1995.