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


           Gnuplot is a command-driven interactive function plotting program.
           If  file  names  are given on the command line, gnuplot loads each file
           with the load command, in the order specified, and exits after the last
           file is processed.  If no files are given, gnuplot prompts for interac-
           tive commands.
           Here are some of its features:
           Plots any number of functions, built up of C operators, C library func-
           tions, 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.
           Also  support  for plotting data files, to compare actual data to theo-
           retical curves.
           Nonlinear least-squares fitting.
           2D plots with mouse-controlled zooming.
           3D plots with mouse-controlled point of view.
           User-defined X and Y ranges (optional auto-ranging), smart  axes  scal-
           ing, smart tic marks.
           Labelling of X and Y axes.
           Shell escapes and command line substitution.
           Load and save capability.
           Support for many output devices and file formats.
           Output redirection.


           -p,  --persist  lets  plot  windows  survive after main gnuplot program
           -e "command list" executes the requested commands  before  loading  the
           next input file.
           -h, --help print summary of usage
           -gray requests grayscale rendering  on  grayscale  or  color  displays.
           (Grayscale displays receive monochrome rendering by default.)
           -mono forces monochrome rendering on color displays.
           -raise raises the plot window after each plot.
           -noraise does not raise the plot window after each plot.
           -tvtwm requests that geometry specifications for position of the window
           be made relative to the currently  displayed  portion  of  the  virtual
           These  options may also be controlled with resources in your .Xdefaults
           file.  For example: gnuplot*gray: on .
           Gnuplot provides a command line option (-pointsize v)  and  a  resource
           (gnuplot*pointsize:  v)  to control the size of points plotted with the
           "points" plotting style. The value v is a real number (greater  than  0
           and  less  than  or  equal  to  ten) used as a scaling factor for point
           sizes. For example, -pointsize 2 uses points twice  the  default  size,
           and -pointsize 0.5 uses points half the normal size.
           For  monochrome  displays,  gnuplot  does not honor foreground or back-
           ground colors. The default is black-on-white. -rv or  gnuplot*reverseV-
           ideo: on requests white-on-black.
           For  color  displays gnuplot honors the following resources (shown here
           with default values). The values may be color names in the X11  rgb.txt
           file on your system, hexadecimal RGB color specifications (see X11 doc-
           umentation), or a color name followed by a comma and an intensity value
           from 0 to 1. For example, blue,.5 means a half intensity blue.
           gnuplot*background: white
           gnuplot*textColor: black
           gnuplot*borderColor: black
           gnuplot*axisColor: black
           gnuplot*line1Color: red
           gnuplot*line2Color: green
           gnuplot*line3Color: blue
           gnuplot*line4Color: magenta
           gnuplot*line5Color: cyan
           gnuplot*line6Color: sienna
           gnuplot*line7Color: orange
           gnuplot*line8Color: coral
           When  -gray  is  selected,  gnuplot  honors the following resources for
           grayscale or color displays (shown here with default values). Note that
           the default background is black.
           gnuplot*background: black
           width line of 1 pixel width. A value of 2 or 3 may improve the  appear-
           ance of some plots.
           gnuplot*borderWidth: 2
           gnuplot*axisWidth: 0
           gnuplot*line1Width: 0
           gnuplot*line2Width: 0
           gnuplot*line3Width: 0
           gnuplot*line4Width: 0
           gnuplot*line5Width: 0
           gnuplot*line6Width: 0
           gnuplot*line7Width: 0
           gnuplot*line8Width: 0
           Gnuplot honors the following resources for setting the dash style  used
           for plotting lines.  0 means a solid line. A 2 digit number jk (j and k
           are >= 1  and <= 9) means a dashed line with a repeated  pattern  of  j
           pixels  on  followed  by k pixels off.  For example, '16' is a "dotted"
           line with 1 pixel on followed by 6 pixels off.  More  elaborate  on/off
           patterns can be specified with a 4 digit value.  For example, '4441' is
           4 on, 4 off, 4 on, 1 off.  The  default  values  shown  below  are  for
           monochrome  displays or monochrome rendering on color or grayscale dis-
           plays. For color displays, the defaults for  all  are  0  (solid  line)
           except for axisDashes which defaults to a '16' dotted line.
           gnuplot*borderDashes: 0
           gnuplot*axisDashes: 16
           gnuplot*line1Dashes: 0
           gnuplot*line2Dashes: 42
           gnuplot*line3Dashes: 13
           gnuplot*line4Dashes: 44
           gnuplot*line5Dashes: 15
           gnuplot*line6Dashes: 4441
           gnuplot*line7Dashes: 42
           gnuplot*line8Dashes: 13
           The  size or aspect ratio of a plot may be changed by resizing the gnu-
           plot window.


           A number of shell environment  variables  are  understood  by  gnuplot.
           None of these are required.
                  The  name  of  the terminal type to be used.  This overrides any
                  terminal type sensed by gnuplot on start-up, but is itself over-
                  ridden  by the .gnuplot (or equivalent) start-up file (see FILES
                  and "help start-up") and, of course, by later explicit  changes.
                  The pathname of the HELP file (gnuplot.gih).
                  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.
                  Several  gnuplot  terminal drivers access TrueType fonts via the
                  gd library.  This variable gives the font search path for  these
                  The  default  font for the terminal drivers that access TrueType
                  fonts via the gd library.
                  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.
                  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".


                  Gnuplot looks for this initialization file, first in the current
                  directory, then in the HOME directory.  It may contain any legal
                  gnuplot  commands, but typically they are limited to setting the
                  terminal and defining frequently-used functions or variables.
                  The default name of the logfile maintained by fit.


           Thomas Williams, Pixar Corporation,
           and Colin Kelley.
           Additions for labelling by Russell Lang, Monash University,  Australia.
           Further  additions by David Kotz, Dartmouth College, New Hampshire, USA
           (formerly of Duke University, North Carolina, USA).


           See the help bugs command in gnuplot.

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