/usr/share/doc/libplplot11/examples/c/x11c.c is in libplplot-dev 5.9.9-2ubuntu2.
This file is owned by root:root, with mode 0o644.
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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 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | // $Id: x11c.c 11680 2011-03-27 17:57:51Z airwin $
//
// Mesh plot demo.
//
// Copyright (C) 2004 Rafael Laboissiere
//
// 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 XPTS 35 // Data points in x
#define YPTS 46 // Data points in y
#define LEVELS 10
static int opt[] = { DRAW_LINEXY, DRAW_LINEXY };
static PLFLT alt[] = { 33.0, 17.0 };
static PLFLT az[] = { 24.0, 115.0 };
static char *title[4] =
{
"#frPLplot Example 11 - Alt=33, Az=24, Opt=3",
"#frPLplot Example 11 - Alt=17, Az=115, Opt=3",
};
static void
cmap1_init()
{
PLFLT i[2], h[2], l[2], s[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;
plscmap1n( 256 );
c_plscmap1l( 0, 2, i, h, l, s, NULL );
}
//--------------------------------------------------------------------------
// main
//
// Does a series of mesh plots for a given data set, with different
// viewing options in each plot.
//--------------------------------------------------------------------------
int
main( int argc, const char *argv[] )
{
int i, j, k;
PLFLT *x, *y, **z;
PLFLT xx, yy;
int nlevel = LEVELS;
PLFLT clevel[LEVELS];
PLFLT zmin, zmax, step;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plinit();
x = (PLFLT *) calloc( XPTS, sizeof ( PLFLT ) );
y = (PLFLT *) calloc( YPTS, sizeof ( PLFLT ) );
plAlloc2dGrid( &z, XPTS, YPTS );
for ( i = 0; i < XPTS; i++ )
{
x[i] = 3. * (double) ( i - ( XPTS / 2 ) ) / (double) ( XPTS / 2 );
}
for ( i = 0; i < YPTS; i++ )
y[i] = 3. * (double) ( i - ( YPTS / 2 ) ) / (double) ( 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 ) * exp( -( xx * xx ) - ( yy + 1. ) * ( yy + 1. ) ) -
10. * ( xx / 5. - pow( xx, 3. ) - pow( yy, 5. ) ) * exp( -xx * xx - yy * yy ) -
1. / 3. * exp( -( xx + 1 ) * ( xx + 1 ) - ( yy * yy ) );
if ( 0 ) // Jungfraujoch/Interlaken
{
if ( z[i][j] < -1. )
z[i][j] = -1.;
}
}
}
plMinMax2dGrid( (const PLFLT **) z, XPTS, YPTS, &zmax, &zmin );
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++ )
{
pladv( 0 );
plcol0( 1 );
plvpor( 0.0, 1.0, 0.0, 0.9 );
plwind( -1.0, 1.0, -1.0, 1.5 );
plw3d( 1.0, 1.0, 1.2, -3.0, 3.0, -3.0, 3.0, zmin, zmax, alt[k], az[k] );
plbox3( "bnstu", "x axis", 0.0, 0,
"bnstu", "y axis", 0.0, 0,
"bcdmnstuv", "z axis", 0.0, 4 );
plcol0( 2 );
// wireframe plot
if ( i == 0 )
plmesh( x, y, (const PLFLT **) z, XPTS, YPTS, opt[k] );
// magnitude colored wireframe plot
else if ( i == 1 )
plmesh( x, y, (const PLFLT **) z, XPTS, YPTS, opt[k] | MAG_COLOR );
// magnitude colored wireframe plot with sides
else if ( i == 2 )
plot3d( x, y, (const PLFLT **) z, XPTS, YPTS, opt[k] | MAG_COLOR, 1 );
// magnitude colored wireframe plot with base contour
else if ( i == 3 )
plmeshc( x, y, (const PLFLT **) z, XPTS, YPTS, opt[k] | MAG_COLOR | BASE_CONT,
clevel, nlevel );
plcol0( 3 );
plmtex( "t", 1.0, 0.5, 0.5, title[k] );
}
}
// Clean up
free( (void *) x );
free( (void *) y );
plFree2dGrid( z, XPTS, YPTS );
plend();
exit( 0 );
}
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