Since WAVE 's printing facilities are implemented through its menu
file, you have complete control over the format of the output, simply
by editing the menu file as in the previous chapter. Both
(used to produce ``chart recorder'' output) and
(used to produce ``full disclosure'' output) are highly flexible and
can be configured to produce almost any reasonable format by inserting
the appropriate options in the commands given in WAVE 's menu file.
You may change the predefined commands or add new ones as you wish.
In the menu file, the special tag ``<Print>'' identifies the
command that runs when you select Print from the File
menu. You can change this command as you wish, but don't change the
``<Print>'' tag itself.
A few of the most commonly-used options (usable with either pschart or psfd) are listed below. For further details on
these and other options, see
WFDB Applications Guide.
(You can also get a brief summary of the many available options by typing pschart -h and psfd -h.)
- -d n
- Optimize for use with a printer with a resolution of n dots
per inch (default: 300 dpi, the typical resolution for low-end laser
printers). This option has no effect on the output scale, and need
not be correct for your printer; it does, however, affect the amount
of detail rendered and the thickness of the lines that are drawn.
Generate EPSF format, suitable for inclusion in another PostScript
file. (I used this option when preparing the pschart and psfd plots in this guide). The default format is PostScript, but
not EPSF, for two reasons. First, a legal EPSF plot must fit
entirely on one page, but pschart and psfd are frequently
used to produce multi-page plots. Second, an EPSF plot may be
rescaled if it is included in another document, and the scales printed
at the bottom of the plot will be incorrect if this happens (as is the
case in the plots reproduced in this guide).
- Print a grid (using pschart) or a set of time axes (using psfd).
- Label the signals in the plot margins.
- Print in ``landscape'' orientation (default: portrait orientation).
The charts made by selecting Print from the File menu are
printed using this option.
- The numeric argument n attached to this option (there should
be no whitespace between -M and n) controls where
annotations appear relative to the signals, and the appearance of the
marker bars. Unless you display annotations as a signal in WAVE , you
may wish to use the option -M$DISPMODE in the menu file -
if you do so, then your printed output will show annotations and
marker bars the same way that WAVE does.
- -P pagesize
- Use this option to print on non-standard paper, or to make a plot that
fits in a smaller space. The default pagesize is set when
psfd and pschart are compiled. For the precompiled
binaries distributed with WAVE , the default is letter (US
letter size paper, 8.5 x 11 inches, or 216 x 279 mm). In most of the
rest of the world, the standard is A4 (210 x 297 mm). You can
specify pagesize as ``letter'', ``A4'', or a number of
other popular sizes, or as ``widthxheight'', where
width and height are the dimensions in millimeters.
I used this option to prepare figure 1.3
in a relatively compact form; if you print
a figure like it with the default page size, there will be
considerable empty space between the plot itself and the page headers
- -t n
- This option sets the time scale, in mm/sec. Defaults are 12.5 mm/sec
for pschart, and 2.5 mm/sec for psfd. For pschart,
you might wish to use the option -t $TSCALE in the menu
file, so that your charts will be printed at the same time scales you
choose for WAVE 's signal window.
- -v n
This option sets the amplitude scale, in mm/mV. Defaults are 5 mm/mV
for pschart, and 1 mm/mV for psfd. For pschart,
you might wish to use the option -v $VSCALE in the menu
file, so that your charts will be printed at the same amplitude scales you
choose for WAVE 's signal window.
This list of options only hints at what is possible using pschart and psfd. There are many other options described in
the man pages, and it is also possible to redefine the
PostScript primitives used by these programs (for example, to change
the appearance of the grid, or to plot in color on a color-capable
printer) by modifying their PostScript prolog files. It is also
possible to replace these programs entirely (for example, with your
own applications for printing on a non-PostScript printer) if desired,
simply by editing WAVE 's menu file.
George B. Moody (email@example.com)