/usr/share/doc/libplplot12/examples/c++/x00.cc is in libplplot-dev 5.10.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | // $Id: x00.cc 12197 2012-07-06 20:54:41Z airwin $
//
// 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
//
//
#include "plc++demos.h"
#ifdef PL_USE_NAMESPACE
using namespace std;
#endif
class x00 {
public:
x00( int, const char ** );
private:
// Class data
plstream *pls;
static const int NSIZE;
};
const int x00::NSIZE = 101;
x00::x00( int argc, const 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];
}
pls = new plstream();
// Parse and process command line arguments
pls->parseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
pls->init();
// Create a labelled box to hold the plot.
pls->env( xmin, xmax, ymin, ymax, 0, 0 );
pls->lab( "x", "y=100 x#u2#d", "Simple PLplot demo of a 2D line plot" );
// Plot the data that was prepared above.
pls->line( NSIZE, x, y );
// In C++ we don't call plend() to close PLplot library
// this is handled by the destructor
delete pls;
}
int main( int argc, const char ** argv )
{
x00 *x = new x00( argc, argv );
delete x;
}
//--------------------------------------------------------------------------
// End of x00.cc
//--------------------------------------------------------------------------
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