/usr/share/doc/libplplot12/examples/c++/x06.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.
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// $Id: x06.cc 12176 2012-02-24 20:33:39Z andrewross $
//--------------------------------------------------------------------------
//
//--------------------------------------------------------------------------
// Copyright (C) 2004 Andrew Ross
// Copyright (C) 2004 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; version 2 of the License.
//
// 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
//--------------------------------------------------------------------------
//
//--------------------------------------------------------------------------
// Implementation of PLplot example 6 in C++.
//--------------------------------------------------------------------------
#include "plc++demos.h"
#ifdef PL_USE_NAMESPACE
using namespace std;
#endif
class x06 {
public:
x06( int, const char ** );
private:
// Class data
plstream *pls;
};
x06::x06( int argc, const char ** argv )
{
int i, j, k, kind_font, font, maxfont;
PLFLT x, y;
char text[10];
// plplot initialization
pls = new plstream();
// Parse and process command line arguments.
pls->parseopts( &argc, argv, PL_PARSE_FULL );
// Initialize PLplot.
pls->init();
for ( kind_font = 0; kind_font < 2; kind_font++ )
{
pls->fontld( kind_font );
if ( kind_font == 0 )
maxfont = 1;
else
maxfont = 4;
for ( font = 0; font < maxfont; font++ )
{
pls->font( font + 1 );
pls->adv( 0 );
// Set up viewport and window.
pls->col0( 2 );
pls->vpor( 0.1, 1.0, 0.1, 0.9 );
pls->wind( 0.0, 1.0, 0.0, 1.3 );
// Draw the grid using plbox.
pls->box( "bcg", 0.1, 0, "bcg", 0.1, 0 );
// Write the digits below the frame.
pls->col0( 15 );
for ( i = 0; i <= 9; i++ )
{
sprintf( text, "%d", i );
pls->mtex( "b", 1.5, ( 0.1 * i + 0.05 ), 0.5, text );
}
k = 0;
for ( i = 0; i <= 12; i++ )
{
// Write the digits to the left of the frame.
sprintf( text, "%d", 10 * i );
pls->mtex( "lv", 1.0, ( 1.0 - ( 2 * i + 1 ) / 26.0 ), 1.0, text );
for ( j = 0; j <= 9; j++ )
{
x = 0.1 * j + 0.05;
y = 1.25 - 0.1 * i;
// Display the symbols (plpoin expects that x and y are
// arrays so that is what we feed it).
if ( k < 128 )
pls->poin( 1, &x, &y, k );
k = k + 1;
}
}
if ( kind_font == 0 )
pls->mtex( "t", 1.5, 0.5, 0.5, "PLplot Example 6 - plpoin symbols (compact)" );
else
pls->mtex( "t", 1.5, 0.5, 0.5, "PLplot Example 6 - plpoin symbols (extended)" );
}
}
// pls->end();
delete pls;
}
int main( int argc, const char ** argv )
{
x06 *x = new x06( argc, argv );
delete x;
}
//--------------------------------------------------------------------------
// End of x06.cc
//--------------------------------------------------------------------------
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