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 GNUPLOT(1)                                                       GNUPLOT(1)
                                11 June 2014



 NAME
      gnuplot - an interactive plotting program

 SYNOPSIS
      gnuplot [X11 options] [options] [file ...]

 DESCRIPTION
      Gnuplot is a command-driven interactive plotting program.

      If file names are given on the command line, gnuplot loads and
      executes each file in the order specified, and exits after the last
      file is processed.  If no files are given, gnuplot prompts for
      interactive commands.

      Here are some of its features:

      Plots any number of functions, built up of C operators, C math library
      functions, and some things C doesn't have like **, sgn(), etc.

      User-defined constants and functions.

      All computations performed in the complex domain.  Just the real part
      is plotted by default, but functions like imag() and abs() and arg()
      are available to override this.

      Many presentation styles for plotting user data from files, including
      surface-fitting, error bars, boxplots, histograms, heat maps, and
      simple manipulation of image data.  There is an on-line demo
      collection at
      http://gnuplot.info/demo

      Nonlinear least-squares fitting.

      2D and 3D plots with mouse-controlled zooming, rotation, and
      hypertext.

      Shell escapes and command line substitution.

      Load and save capability.

      Support for a huge variety of output devices and file formats.

 OPTIONS
      -p, --persist lets plot windows survive after main gnuplot program
      exits.

      -c scriptname ARG1 ARG2 ..., load script using gnuplot's "call"
      mechanism and pass it the remainder of the command line as arguments

      -d, --default settings.  Do not read from gnuplotrc or ~/.gnuplot on
      entry.



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 GNUPLOT(1)                                                       GNUPLOT(1)
                                11 June 2014



      -e "command list" executes the requested commands before loading the
      next input file.

      -h, --help print summary of usage

      -V show current version

 X11 OPTIONS
      For terminal type x11, gnuplot accepts the standard X Toolkit options
      and resources such as geometry, font, and background. See the X(1) man
      page for a description of common options.  For additional X options
      specific to gnuplot, type help x11 on the gnuplot command line. These
      options have no effect on other terminal types.

 ENVIRONMENT
      A number of shell environment variables are understood by gnuplot.
      None of these are required.

      GNUTERM
           The name of the terminal type to be used by default.  This can be
           overridden by the gnuplotrc or .gnuplot start-up files and, of
           course, by later explicit "set terminal" commands.

      GNUHELP
           The pathname of the HELP file (gnuplot.gih).

      HOME The name of a directory to search for a .gnuplot file.

      PAGER
           An output filter for help messages.

      SHELL
           The program used for the "shell" command.

      FIT_SCRIPT
           Specifies a gnuplot command to be executed when a fit is
           interrupted---see "help fit".

      FIT_LOG
           The name of the logfile maintained by fit.

      GNUPLOT_LIB
           Additional search directories for data and command files. The
           variable may contain a single directory name, or a list of
           directories separated by ':'. The contents of GNUPLOT_LIB are
           appended to the "loadpath" variable, but not saved with the
           "save" and "save set" commands.

      GDFONTPATH
           Several gnuplot terminal drivers access TrueType fonts via the gd
           library.  This variable gives the font search path for these



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 GNUPLOT(1)                                                       GNUPLOT(1)
                                11 June 2014



           drivers.

      GNUPLOT_DEFAULT_GDFONT
           The default font for the terminal drivers that access TrueType
           fonts via the gd library.

      GNUPLOT_FONTPATH
           The font search path used by the postscript terminal. The format
           is the same as for GNUPLOT_LIB. The contents of GNUPLOT_FONTPATH
           are appended to the "fontpath" variable, but not saved with the
           "save" and "save set" commands.

      GNUPLOT_PS_DIR
           Used by the postscript driver to locate external prologue files.
           Depending on the build process, gnuplot contains either a builtin
           copy of those files or simply a default hardcoded path. Use this
           variable to test the postscript terminal with custom prologue
           files. See "help postscript prologue".

 FILES
      gnuplotrc
           When gnuplot is run, it first looks for a system-wide
           initialization file named gnuplotrc.  The standard location of
           this file expected by the program is reported by the "show
           loadpath" command.

      .gnuplot
           After loading the system-wide initialization file, if any,
           Gnuplot looks for a private initialization file in the HOME
           directory.  It may contain any legal gnuplot commands, but
           typically they are limited to setting the preferred terminal and
           line types and defining frequently-used functions or variables.

      fit.log
           The default name of the logfile output by the "fit" command.

 AUTHORS
      Original authors: Thomas Williams and Colin Kelley.  Starting with
      gnuplot version 3.8, the project source is cooperatively maintained on
      SourceForge by a large number of contributors.

 BUGS
      Please report bugs using the project bug tracker on SourceForge.

 SEE ALSO
      See the printed manual or the on-line help for details on specific
      commands.  Project web site at http://gnuplot.info







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