/usr/share/doc/libplplot11/examples/perl/x08.pl is in libplplot-dev 5.9.9-2ubuntu2.
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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 | #! /usr/bin/env perl
#
# Demo x08 for the PLplot PDL binding
#
# 3-d 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
# SYNC: x08c.c 1.45
use PDL;
use PDL::Graphics::PLplot;
use Math::Trig qw [pi];
use Getopt::Long;
use constant XPTS => 35; # Data points in x
use constant YPTS => 46; # Data points in y
use constant LEVELS => 10;
@alt = (60.0, 20.0);
@az = (30.0, 60.0);
@title = (
"#frPLplot Example 8 - Alt=60, Az=30",
"#frPLplot Example 8 - Alt=20, Az=60"
);
sub cmap1_init {
my $gray = shift;
my ($i, $h, $l, $s);
$i = pdl [0.0, # left boundary
1.0]; # right boundary
if ($gray) {
$h = pdl [0.0, # hue -- low: red (arbitrary if s=0)
0.0]; # hue -- high: red (arbitrary if s=0)
$l = pdl [0.5, # lightness -- low: half-dark
1.0]; # lightness -- high: light
$s = pdl [0.0, # minimum saturation
0.0]; # minimum saturation
} else {
$h = pdl [240, # blue -> green -> yellow -> */
0]; # -> red
$l = pdl [0.6, 0.6];
$s = pdl [0.8, 0.8];
}
plscmap1n (256);
plscmap1l (0, $i, $h, $l, $s, pdl []);
}
my $LEVELS = 10;
# Parse and process command line arguments
plParseOpts (\@ARGV, PL_PARSE_SKIP | PL_PARSE_NOPROGRAM);
GetOptions ("sombrero" => \$sombrero);
my $nlevel = LEVELS;
my $rosen = 1;
$rosen = 0
if $sombrero;
# Initialize plplot
plinit ();
my $x = (sequence (XPTS) - int(XPTS / 2)) / int(XPTS / 2);
$x *= 1.5
if $rosen;
my $y = (sequence (YPTS) - int(YPTS / 2)) / int(YPTS / 2);
$y += 0.5
if $rosen;
my $z = zeroes (XPTS, YPTS);
my ($i, $j);
for ($i = 0; $i < XPTS; $i++) {
my $xx = $x->index ($i);
for ($j = 0; $j < YPTS; $j++) {
my $yy = $y->index ($j);
my $zz;
if ($rosen) {
$zz = (1 - $xx) ** 2 + 100 * ($yy - ($xx ** 2)) ** 2;
# The log argument may be zero for just the right grid.
if ($zz > 0.) {
$zz = log ($zz);
} else {
$zz = -5.; # -MAXFLOAT would mess-up up the scale
}
}
else {
$r = sqrt ($xx * $xx + $yy * $yy);
$zz = exp (-$r * $r) * cos (2.0 * pi * $r);
}
$z->index ($i)->index ($j) .= $zz;
}
}
my $zmin = min ($z);
my $zmax = max ($z);
my $step = ($zmax - $zmin) / ($nlevel + 1);
my $clevel = $zmin + $step + $step * sequence ($nlevel);
pllightsource (1., 1., 1.);
for (my $k = 0; $k < 2; $k++) {
for (my $ifshade = 0; $ifshade < 4; $ifshade++) {
pladv (0);
plvpor (0.0, 1.0, 0.0, 0.9);
plwind (-1.0, 1.0, -0.9, 1.1);
plcol0 (3);
plmtex (1.0, 0.5, 0.5, "t", $title[$k]);
plcol0(1);
if ($rosen) {
plw3d (1.0, 1.0, 1.0, -1.5, 1.5, -0.5, 1.5, $zmin, $zmax,
$alt[$k], $az[$k]);
} else {
plw3d (1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, $zmin, $zmax,
$alt[$k], $az[$k]);
}
plbox3 (0.0, 0, 0.0, 0, 0.0, 0,
"bnstu", "x axis", "bnstu", "y axis", "bcdmnstuv", "z axis");
plcol0 (2);
if ($ifshade == 0) { # diffuse light surface plot
cmap1_init (1);
plsurf3d ($x, $y, $z, 0, pdl []);
} elsif ($ifshade == 1) { # magnitude colored plot
cmap1_init (0);
plsurf3d ($x, $y, $z, MAG_COLOR, pdl []);
}
elsif ($ifshade == 2) { # magnitude colored plot with faceted squares
cmap1_init (0);
plsurf3d ($x, $y, $z, MAG_COLOR | FACETED, pdl []);
} else { # magnitude colored plot with contours
cmap1_init (0);
plsurf3d ($x, $y, $z, MAG_COLOR | SURF_CONT | BASE_CONT, $clevel);
}
}
}
plend ();
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