--[[
  Simple demo of a 2D line plot.

  Copyright (C) 2011  Alan W. Irwin
  Copyright (C) 2012  Andrew Ross

  This file is part of PLplot.

  PLplot is free software; you can redistribute it and/or modify
  it under the terms of the GNU Library General Public License as published
  by the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  PLplot 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 Library General Public License for more details.

  You should have received a copy of the GNU Library General Public License
  along with PLplot; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
--]]

-- initialise Lua bindings for PLplot examples.
dofile("plplot_examples.lua")


-- Variables and data arrays used by
NSIZE = 101
x = {}
y = {}
xmin = 0.
xmax = 1.
ymin = 0.
ymax = 100.

-- Prepare data to be plotted.
for i = 1, NSIZE do
  x[i] = ( i - 1 ) / ( NSIZE - 1 )
  y[i] = ymax * x[i]^2
end

-- Parse and process command line arguments
pl.parseopts( arg, pl.PL_PARSE_FULL )

-- Initialize plplot
pl.init()

-- Create a labelled box to hold the plot.
pl.env( xmin, xmax, ymin, ymax, 0, 0 )
pl.lab( "x", "y=100 x#u2#d", "Simple PLplot demo of a 2D line plot" )

-- Plot the data that was prepared above.
pl.line( x, y )

-- Close PLplot library
pl.plend()