Manual Pages for UNIX Operating System command usage for man pic2graph
User Commands PIC2GRAPH(1)
NAME
pic2graph - convert a PIC diagram into a cropped image
SYNOPSIS
pic2graph [ -unsafe ] [ -format fmt ] [ -eqn delim ]
DESCRIPTION
Reads a PIC program as input; produces an image file (by
default in Portable Network Graphics format) suitable for
the Web as output. Also translates geqn(1) constructs, so
it can be used for generating images of mathematical formu-
lae.
PIC is a rather expressive graphics minilanguage suitable
for producing box-and-arrow diagrams of the kind frequently
used in technical papers and textbooks. The language is
sufficiently flexible to be quite useful for state charts,
Petri-net diagrams, flow charts, simple circuit schematics,
jumper layouts, and other kinds of illustration involving
repetitive uses of simple geometric forms and splines.
Because PIC descriptions are procedural and object-based,
they are both compact and easy to modify.
The PIC language is fully documented in "Making Pictures
With GNU PIC", a document which is part of the groff(1) dis-
tribution.
Your input PIC code should not be wrapped with the .PS and
.PE macros that normally guard it within groff(1) macros.
The output image will be a black-on-white graphic clipped to
the smallest possible bounding box that contains all the
black pixels. By specifying command-line options to be
passed to convert(1) you can give it a border, set the back-
ground transparent, set the image's pixel density, or per-
form other useful transformations.
This program uses gpic(1), geqn(1), groff(1), gs(1), and the
ImageMagick convert(1) program. These programs must be
installed on your system and accessible on your $PATH for
pic2graph to work.
OPTIONS
-unsafe
Run gpic(1) and groff(1) in the `unsafe' mode enabling
the PIC macro sh to execute arbitrary commands. The
default is to forbid this.
-format fmt
Specify an output format; the default is PNG (Portable
Network Graphics). Any format that convert(1) can emit
is supported.
Groff Version 1.19.2Last change: 21 October 2010 1
User Commands PIC2GRAPH(1)
-eqn delim
Change the fencepost characters that delimit geqn(1)
directives ($ and $, by default). This option requires
an argument, but an empty string is accepted as a
directive to disable geqn(1) processing.
Command-line switches and arguments not listed above are
passed to convert(1).
FILES
/usr/share/groff/1.19.2/tmac/eqnrc The geqn(1) initializa-
tion file.
ENVIRONMENT
GROFF_TMPDIR
The directory in which temporary files will be created.
If this is not set pic2graph searches the environment
variables TMPDIR, TMP, and TEMP (in that order). Oth-
erwise, temporary files will be created in /tmp.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWgroff |
|_____________________________|_____________________________|
| Interface stability | Uncommitted |
|_____________________________|_____________________________|
SEE ALSO
eqn2graph(1), grap2graph(1), gpic(1), geqn(1), groff(1),
gs(1), convert(1).
AUTHOR
Eric S. Raymond , based on a recipe by W.
Richard Stevens.
Groff Version 1.19.2Last change: 21 October 2010 2