gbplot - gnuplot command line interface

       Written by Giulio Bottazzi

       Copyright © 2009-2014 Giulio Bottazzi

       This  program  is  free  software;  you  can  redistribute it and/or modify it under the terms of the GNU
       General Public License (version 2) as published by the Free Software Foundation.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY  WARRANTY;  without  even
       the  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
       License for more details.

gbplot ver. 5.6                                    March 2019                                          GBPLOT(1)

       This  command  produce simple plots from the command line using the 'gnuplot' program. 'comand' is one of
       the gnuplot commands: 'plot' or 'splot' while 'specstring' is a list of gnuplot specifications. In  order
       to  escape  shell  interpretation place 'specstring' between double quotes. It is possible to specify the
       type of terminal and output file name  as  command  line  options.  It  is  also  possible  to  start  an
       interactive  session,  useful to adjust plot parameters by hand. The program can be used in a shell pipe,
       as in

       cat datafile | gbplot [options] [command] [specstring]

       Two plots: one using line and one using points.

              echo "1\n2\n3" | gbplot plot "u 0:1 w l title 'line', '' u 0:1 w p title 'point'"

       Save the plot in PDF format in a file named 'test.pdf'

              echo "1\n2\n3" | gbplot -T pdf -o test.pdf plot "u 0:1 w l title 'line'"

       Set log on the y axis

              echo "1\n2\n3" | gbplot -l y plot "u 0:1 w l title 'line', '' u 0:1 w p title 'point'"

       Set log on the x axis and a grid

              echo "1\n2\n3" | gbplot -l x -C "set grid" plot "u 0:1 w l title  'line',  ''  u  0:1  w  p  title
              'point'"

       Set a grid and the position of the legend

              echo "1\n2\n3" | gbplot -C "set grid" -C "set key bottom right" plot "u 0:1 w l title 'line', '' u
              0:1 w p title 'point'"

       Compute the value of the gamma function on a set of points; gawk is used to filer the relevant numbers

              echo "1\n2\n3" | gbplot -C "set table" plot 'u (gamma($1))' | gawk '/ i/{print $2}'

       gbplot - gnuplot command line interface

-h print this help

       -i start interactive session after the plot

       -T set a different terminal

       -o set an ouptut file

       -t assign a title to the plot

       -p prepend expression to plot command

       -l set log; possible values x,y and xy

       -C command to be run before the plot

       -v verbose output: print commands to standard error

       --help
              same as '-h'

       --version print the program version

       Report bugs to <gbutils@googlegroups.com>
       Package home page <http://cafim.sssup.it/~giulio/software/gbutils/index.html>

gbplot [options] [command] [specstring] <datafile