psfd - produce annotated ‘full-disclosure’ plots on a PostScript device
psfd [ [ options ... ] script ... ]
psfd produces high-quality
annotated ‘full-disclosure’ plots of WFDB records on PostScript devices. When
rendered on a PostScript laser printer or phototypesetter, the plots closely
resemble those that appear on pages 2-97 of the MIT-BIH Arrhythmia Database
psfd reads one or more script files containing newline-terminated
commands. Its standard output is a PostScript file suitable for printing
directly with no further processing. By default, psfd draws ‘zero-width’ lines;
doing so typically reduces the printing time by a factor of three for
a first-generation (300 dpi) laser printer while producing visually pleasing
results. If the output is destined for a high-resolution (600 dpi or more)
printer or phototypesetter, however, be sure to use the -d option (see below),
or the traces and grid will be invisible (or nearly so).
- -a ann
- Print annotations from annotator ann (default: ‘atr’). To suppress annotation
printing, use ‘-a ""’.
- -A ann
- As for -a, but for a second annotator. The second
set of annotations is shown below the first set.
- -b n
- Set the binding offset
to n millimeters (default: 0). The inside margin is increased by n mm,
and the outside margin is decreased by the same amount.
- -c string
- Print ‘Copyright
© string’ in the left page footer; string may include whitespace if it is
quoted. The characters ‘%d’, if included in string, are replaced by the current
year. A default copyright notice is printed if no -c option is specified.
To suppress printing the copyright notice, use ‘-c ""’.
- Produce charts in
color (default: black and white).
- -Ca r g b
- Draw annotations (if enabled)
in the specified color. The color is specified using three numerical arguments
(with values between 0 and 1 inclusive) that indicate the amounts of red,
green, and blue respectively. Examples: -Ca 0.5 0.5 1.0 produces light blue
(the default obtained using -C only); -Ca 0 0.5 0 produces a deep green color.
- -Cg r g b
- Draw the grid (if enabled) in the specified color. Default: red
(1 0 0).
- -Cl r g b
- Draw labels and other non-annotation text in the specified
color. Default: black (0 0 0).
- -Cs r g b
- Draw signals in the specified color.
Default: deep blue (0 0 0.5).
- -d n
- Set up for using a printer with a resolution
of n dots per inch (default: n = 300, the typical resolution for laser
printers). For a phototypesetter, n is typically 1200 or 2400. Note that
n does not have to be correct in order to get properly scaled output;
the value determines the granularity of the calculations made by psfd and
the line width used by the printer, but not the scales.
- Process even-numbered
pages in a manner appropriate for two-sided printing. Even-numbered pages
are printed with reversed page headers, and with the outside margin on
the left (default: page headers are not reversed, and the inside margin
is always on the left).
- Generate EPSF format (encapsulated PostScript
file format), suitable for inclusion in another PostScript file.
a grid with 1-second tick marks at the top of each page and below the last
strip on each page (default: no grid).
- Print a usage summary.
- -H n
approximately n millimeters of vertical space on the page for each trace
(default: n = 7.5).
- Label the signals in the margins next to each strip
(default: no signal labels).
- Print in landscape orientation (default:
- -m inside outside top bottom
- Specify page margins
in millimeters. Defaults: top and bottom, 25 mm; inside and outside, 25-37.5
mm (half of the difference between the page width and the default strip
width). The default strip width is the largest multiple of 25 mm that is
at least 50 mm less than the page width. Note that page headers and footers,
time stamps, and signal labels are printed in the margins. Also note that
hardware-enforced, printer-specific margins are not included; the margins
specified using -m apply to the imageable area, and not necessarily to the
- Print marker bars across the signals to show the locations
of beat annotations (equivalent to -M1).
- Set marker bar and annotation
format (note: no space between -M and barstyle). Legal values for barstyle:
0 (no bars); 1 (bars across all signals); 2 (bars across attached signal,
annotations at center); 3 (bars across attached signal, annotations above
bars). Default: barstyle = 0.
- -n n
- Use n as the number of the first page
(default: 1). Use ‘-n 0’ (or any negative value for n) to suppress page numbering.
- Print counter values after time stamps in the left margin.
- -P pagesize
- Specify the size of the output pages to be printed. Legal values for pagesize
are: ‘letter’ (8.5" x 11", 216 mm x 279 mm; imageable area 209 mm x 272 mm),
‘lwletter’ (8.5" x 11", 216 mm x 279 mm; imageable area 203 mm x 277 mm),
‘legal’ (8.5" x 14", 216 mm x 356 mm; imageable area 209 mm x 348 mm), ‘legal13’
(8.5" x 13", 216 x 330 mm; imageable area 209 mm x 322 mm), ‘A4’ (8.27" x 11.69",
210 mm x 297 mm; imageable area 202 mm x 289 mm), ‘A5’ (5.84" x 8.27", 148
mm x 210 mm; imageable area 140 mm x 202 mm); ‘B4’ (9.84" x 13.9", 250 mm x
353 mm; imageable area 249 mm x 356 mm), ‘B5’ (6.93" x 9.84", 176 mm x 250
mm; imageable area 173 mm x 249 mm), or ‘widthxheight’ (where width and height
are the width and height of the imageable area in millimeters). ‘lwletter’
is the standard letter size for the Apple LaserWriter; all of the other
predefined page sizes are those used by the Sun SPARCprinter. Note that
some printers may require non-standard PostScript code to select non-standard
page sizes; in such cases, it may be necessary to customize the prolog
file (see FILES). Default: letter size.
- Print a record name as part of
the header on each page. If strips from two or more records are printed
on one page, the name of the last record is printed.
- Same as -r.
- -s signal-list
- Print only the signals named in the signal-list (one or more signal numbers
or names, separated by spaces; default: print all signals).
- -S scale-mode
- Print scales and timestamps in the specified modes. Legal
values for scale-mode: 0 (no scales); 1 (mm/unit in footers); 2 (units/tick
in footers). Legal values for timestamp-mode: 0 (no timestamps); 1 (elapsed
times only); 2 (absolute times if defined, elapsed times otherwise). Defaults:
scale-mode = 1, timestamp-mode = 2.
- -t n
- Set the time scale to n millimeters
per second (default: n = 2.5, one-tenth of the standard scale for chart recorders).
- -T title
- Set the page title to title (which may include whitespace if quoted).
If no -T option is specified, the page title is constructed from the date
of the last recording on the page, if defined, or today’s date otherwise.
To suppress printing the page title, use ‘-T ""’.
- Generate ‘unstructured’ PostScript
as a workaround for a bug in the Adobe TranScript software (also see ENVIRONMENT
below). Default: generate structured PostScript, suitable for processing
by page-selection or page-reversal post-processors.
- -v n
- Set the voltage (ordinate)
scale to n millimeters per millivolt. Signals that do not have units of
millivolts (as specified in the record’s header file) are scaled proportionately,
as specified by the calibration file (see wfdbcal(5)
). The default scale
is 1 mm/mV, one-tenth of the standard scale for chart recorders.
mode (echo each command as it is read from the script file).
- -w n
- Set the
line width for signals, grid lines, and marker bars to n mm. Default: 0
(the narrowest possible width; note that some devices may not render zero-width
- Extend the last strip of each record up to 10% if necessary
to avoid printing a short strip at the end. (This option may be used to
obtain plots like those in the MIT-BIH Arrhythmia Database Directory.)
- Print only the first character of each comment annotation.
that is not an option or an option argument is taken as the name of a script
of newline-terminated commands to be executed by psfd. If the script name
is ‘-’, psfd reads commands from the standard input. Options that follow a
script name are not applied to the processing of that script, so it is
possible to use two or more scripts with different sets of options in a
single run. Standard commands are of the following form:
in which record is the name of the record for which a ‘full disclosure’ plot
is to be printed, and time indicates the starting time (and, optionally,
the stop time) of the plot. Anything that follows the time field in a command
is ignored. Fields are separated by spaces or tabs. If the time field contains
a hyphen (‘-’), the portion that precedes the hyphen is taken as the starting
time of the plot, and the portion that follows the hyphen indicates the
stop time. A totally empty command line causes psfd to put the next plot
at the top of a new page, even if the current page is not full. pschart(1)
command scripts are usable by psfd; note, however, that the programs use
different conventions for interpreting a missing stop time, and that strip
titles are not printed by psfd.
The environment variable PSFDPRO
can be used to name an alternate prolog file (see below) for custom formats.
The environment variable TRANSCRIPTBUG may be set (to any value) to generate
‘unstructured’ PostScript by default (see the -u option above). It may be necessary
to set and export the shell variables WFDB and WFDBCAL (see setwfdb(1)
- default PostScript prolog file.
PostScript printers, output may be quite slow. A full page, with grids
and default scales, typically takes about 3 minutes to render on an Apple
LaserWriter, or about 6 minutes on a Linotronic 1200 dpi phototypesetter.
Most modern printers can render psfd output at nearly full speed.
300 dpi printer, a typical full page of output will be about 80 Kbytes.
Expect this to increase approximately linearly with the printer resolution.
The signals are decimated to obtain samples that are spaced by intervals
approximating one pixel. To obtain this result, the signals are first digitally
low-pass filtered by psfd; in general, this has no significant effect on
the appearance of the plots other than a slight improvement in legibility
for signals contaminated by high-frequency noise. To get an idea of the
high-frequency content of the signals, use pschart(1)
Specifying EPSF output
using the -E option does not prevent psfd from producing multi-page output,
which is not permitted in EPSF. You should make sure that your output fits
entirely onto one page (most easily verified using the -V option) before
including it in another document. Note that the bounding box calculated
by psfd covers the entire width of the page and most of its height (excluding
only about half of the top and bottom margins, so that the header and footer
material is included), even if only a small portion of the page contains
plots. If you wish to fit such a plot into another document with a minimum
of empty space around it, you may either edit the bounding box comment
in the psfd output, or specify a page size that closely matches the size
of your plot. The document in which psfd output is included can arbitrarily
rescale the plot, so that scales expressed in mm/unit cannot be relied
Under MS-DOS, a bug in command.com makes it impossible to pass an empty
string in the argument list of a command, so that -a "", -c "", and -T ""
do not work as described above. Type a space between the quotation marks
to avoid this bug, or use one of the UNIX shells that have been ported
to MS-DOS instead of command.com.
There are too many options. Invoke psfd
with no arguments for a brief summary of options.
George B. Moody (email@example.com)
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