/usr/share/doc/libplplot12/examples/java/x11.java is in libplplot-java 5.10.0-0ubuntu5.
This file is owned by root:root, with mode 0o644.
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// $Id: x11.java 12240 2012-10-04 22:10:12Z andrewross $
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Copyright (C) 2001 Geoffrey Furnish
// Copyright (C) 2001, 2002, 2003 Alan W. Irwin
// Copyright (C) 2004 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; 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 11 in Java.
//--------------------------------------------------------------------------
package plplot.examples;
import plplot.core.*;
import static plplot.core.plplotjavacConstants.*;
import java.lang.Math;
class x11 {
PLStream pls = new PLStream();
static final int XPTS = 35;
static final int YPTS = 46;
static final int LEVELS = 10;
static int opt[] = { 3, 3 };
static double alt[] = { 33.0, 17.0 };
static double az[] = { 24.0, 115.0 };
static String[] title =
{
"#frPLplot Example 11 - Alt=33, Az=24, Opt=3",
"#frPLplot Example 11 - Alt=17, Az=115, Opt=3"
};
void cmap1_init()
{
double [] i = new double[2];
double [] h = new double[2];
double [] l = new double[2];
double [] s = new double[2];
boolean [] rev = new boolean[2];
i[0] = 0.0; // left boundary
i[1] = 1.0; // right boundary
h[0] = 240; // blue -> green -> yellow ->
h[1] = 0; // -> red
l[0] = 0.6;
l[1] = 0.6;
s[0] = 0.8;
s[1] = 0.8;
rev[0] = false; // interpolate on front side of colour wheel.
rev[1] = false; // interpolate on front side of colour wheel.
pls.scmap1n( 256 );
pls.scmap1l( false, i, h, l, s, rev );
}
// Does a series of mesh plots for a given data set, with different viewing
// options in each plot.
public static void main( String[] args )
{
new x11( args );
}
public x11( String[] args )
{
int i, j, k;
double[] x = new double[ XPTS ];
double[] y = new double[ YPTS ];
double[][] z = new double[XPTS][YPTS];
double zmin = Double.MAX_VALUE, zmax = Double.MIN_VALUE;
double xx, yy;
int nlevel = LEVELS;
double[] clevel = new double[LEVELS];
double step;
// Parse and process command line arguments.
pls.parseopts( args, PL_PARSE_FULL | PL_PARSE_NOPROGRAM );
// Initialize plplot.
pls.init();
for ( i = 0; i < XPTS; i++ )
x[i] = 3. * ( i - ( XPTS / 2 ) ) / ( XPTS / 2 );
for ( j = 0; j < YPTS; j++ )
y[j] = 3. * ( j - ( YPTS / 2 ) ) / ( YPTS / 2 );
for ( i = 0; i < XPTS; i++ )
{
xx = x[i];
for ( j = 0; j < YPTS; j++ )
{
yy = y[j];
z[i][j] = 3. * ( 1. - xx ) * ( 1. - xx ) * Math.exp( -( xx * xx ) - ( yy + 1. ) * ( yy + 1. ) ) -
10. * ( xx / 5. - Math.pow( xx, 3. ) - Math.pow( yy, 5. ) ) * Math.exp( -xx * xx - yy * yy ) -
1. / 3. * Math.exp( -( xx + 1 ) * ( xx + 1 ) - ( yy * yy ) );
//if ( false ) // Jungfraujoch/Interlaken
//{
// if ( z[i][j] < -1. )
// z[i][j] = -1.;
//}
if ( zmin > z[i][j] )
zmin = z[i][j];
if ( zmax < z[i][j] )
zmax = z[i][j];
}
}
step = ( zmax - zmin ) / ( nlevel + 1 );
for ( i = 0; i < nlevel; i++ )
clevel[i] = zmin + step + step * i;
cmap1_init();
for ( k = 0; k < 2; k++ )
{
for ( i = 0; i < 4; i++ )
{
pls.adv( 0 );
pls.col0( 1 );
pls.vpor( 0.0, 1.0, 0.0, 0.9 );
pls.wind( -1.0, 1.0, -1.0, 1.5 );
pls.w3d( 1.0, 1.0, 1.2, -3.0, 3.0, -3.0, 3.0, zmin, zmax,
alt[k], az[k] );
pls.box3( "bnstu", "x axis", 0.0, 0,
"bnstu", "y axis", 0.0, 0,
"bcdmnstuv", "z axis", 0.0, 4 );
pls.col0( 2 );
// wireframe plot
if ( i == 0 )
pls.mesh( x, y, z, opt[k] );
// magnitude colored wireframe plot
else if ( i == 1 )
pls.mesh( x, y, z, opt[k] | MAG_COLOR );
// magnitude colored wireframe plot with sides
else if ( i == 2 )
pls.plot3d( x, y, z, opt[k] | MAG_COLOR, true );
// magnitude colored wireframe plot with base contour
else if ( i == 3 )
pls.meshc( x, y, z, opt[k] | MAG_COLOR | BASE_CONT,
clevel );
pls.col0( 3 );
pls.mtex( "t", 1.0, 0.5, 0.5, title[k] );
}
}
pls.end();
}
}
//--------------------------------------------------------------------------
// End of x11.java
//--------------------------------------------------------------------------
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