File:2D line plot using PLplot library.png

// Simple demo of a 2D line plot.
//
// Copyright (C) 2011  Alan W. Irwin
//
// 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
//
//

#include "plcdemos.h"
#define NSIZE    101

int
main( int argc, char *argv[] )
{
    PLFLT x[NSIZE], y[NSIZE];
    PLFLT xmin = 0., xmax = 1., ymin = 0., ymax = 100.;
    int   i;

    // Prepare data to be plotted.
    for ( i = 0; i < NSIZE; i++ )
    {
        x[i] = (PLFLT) ( i ) / (PLFLT) ( NSIZE - 1 );
        y[i] = ymax * x[i] * x[i];
    }

    // Parse and process command line arguments
    plparseopts( &argc, argv, PL_PARSE_FULL );

    // Initialize plplot
    plinit();

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

    // Plot the data that was prepared above.
    plline( NSIZE, x, y );

    // Close PLplot library
    plend();

    exit( 0 );
}