grap2graph(1)


NAME

   grap2graph - convert a grap diagram into a cropped bitmap image

SYNOPSIS

   grap2graph [ -unsafe ] [ -resolution M|MxN ] [ -format fmt ]

DESCRIPTION

   Reads  a  grap  program as input; produces an image file (by default in
   Portable Network Graphics format) suitable for the Web as output.   For
   a description of the grap language, see grap(1).

   Your  graph  specification  should  not be wrapped with the .G1 and .G2
   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  background transparent, set the image's pixel
   density, or perform other useful transformations.

   This program  uses  grap(1),  pic(1),  groff(1),  and  the  ImageMagick
   convert(1)  program.   These  programs must be installed on your system
   and accessible on your $PATH for grap2graph 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.

   Command-line  switches  and  arguments  not  listed above are passed to
   convert(1).

ENVIRONMENT

   GROFF_TMPDIR
          The directory in which temporary files will be created.  If this
          is not set grap2graph searches the environment variables TMPDIR,
          TMP, and TEMP (in that order).  Otherwise, temporary files  will
          be created in /tmp.

SEE ALSO

   pic2graph(1), eqn2graph(1), pic(1), groff(1), gs(1), convert(1).

COPYING

   This documentation is released to the public domain.

AUTHORS

   This document was written by Eric S. Raymond esr@thyrsus.com.





Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.





Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.


Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.





Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.


Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.





Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.


Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.