This is the command pic2graph that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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 eqn(1) constructs, so it
can be used for generating images of mathematical formulae.
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) distribution.
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 clipped to the smallest possible bounding box that contains all
the black pixels. Older versions of convert(1) will produce a black-on-white graphic;
newer ones may produce a black-on-transparent graphic. By specifying command-line options
to be passed to convert(1) you can give it a border, force the background transparent, set
the image's pixel density, or perform other useful transformations.
This program uses pic(1), eqn(1), groff(1), gs(1), and the ImageMagick convert(1) program.
These programs must be installed on your system and accessible on your $PATH for pic2graph
to work.
OPTIONS
-unsafe
Run pic(1) and groff(1) in the ‘unsafe’ mode enabling the PIC macro sh to execute
arbitrary commands. The default is to forbid this.
-format fmt
Specify an output format; the default is PNG (Portable Network Graphics). Any
format that convert(1) can emit is supported.
-eqn delim
Change the fencepost characters that delimit eqn(1) directives ($ and $, by
default). This option requires an argument, but an empty string is accepted as a
directive to disable eqn(1) processing.
Command-line switches and arguments not listed above are passed to convert(1).
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