/usr/share/doc/libplplot12/examples/perl/x18.pl is in libplplot-dev 5.10.0+dfsg2-0.1ubuntu2.
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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 | #! /usr/bin/env perl
#
# Demo x18 for the PLplot PDL binding
#
# 3-d line and point 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: x18c.c 1.21
use PDL;
use PDL::Graphics::PLplot;
use Math::Trig qw [pi];
my @opt = (1, 0, 1, 0);
my @alt = (20.0, 35.0, 50.0, 65.0);
my @az = (30.0, 40.0, 50.0, 60.0);
sub test_poly {
my $k = shift;
my $draw = pdl ([ 1, 1, 1, 1 ],
[ 1, 0, 1, 0 ],
[ 0, 1, 0, 1 ],
[ 1, 1, 0, 0 ]);
my $two_pi = 2 * pi;
pladv (0);
plvpor (0.0, 1.0, 0.0, 0.9);
plwind (-1.0, 1.0, -0.9, 1.1);
plcol0 (1);
plw3d (1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, $alt[$k], $az[$k]);
plbox3 (0.0, 0, 0.0, 0, 0.0, 0,
"bnstu", "x axis", "bnstu", "y axis", "bcdmnstuv", "z axis");
plcol0 (2);
# x = r sin(phi) cos(theta)
# y = r sin(phi) sin(theta)
# z = r cos(phi)
# r = 1 :=)
print $draw[0];
for (my $i = 0; $i < 20; $i++ ) {
my $theta = $two_pi * ($i + pdl [0, 0, 1, 1, 0]) / 20.;
for (my $j = 0; $j < 20; $j++ ) {
my $phi = pi * ($j + pdl [0, 1, 1, 0, 0]) / 20.1;
my $x = sin ($phi) * cos ($theta);
my $y = sin ($phi) * sin ($theta);
my $z = cos ($phi);
plpoly3 ($x, $y, $z, $draw->slice(",$k")->squeeze, 1);
}
}
plcol0 (3);
plmtex (1.0, 0.5, 0.5, "t", "unit radius sphere");
}
#--------------------------------------------------------------------------
# main
# Does a series of 3-d plots for a given data set, with different
# viewing options in each plot.
#--------------------------------------------------------------------------
use constant NPTS => 1000;
# Parse and process command line arguments
plParseOpts (\@ARGV, PL_PARSE_SKIP | PL_PARSE_NOPROGRAM);
# Initialize plplot
plinit ();
for (my $k = 0; $k < 4; $k++) {
test_poly ($k);
}
# From the mind of a sick and twisted physicist...
my $i = sequence (NPTS);
my $z = -1. + 2. * $i / NPTS;
# Pick one ...
my $r = $z;
my $x = $r * cos (2 * pi * 6 * $i / NPTS);
my $y = $r * sin (2 * pi * 6 * $i / NPTS );
for ($k = 0; $k < 4; $k++) {
pladv (0);
plvpor (0.0, 1.0, 0.0, 0.9);
plwind (-1.0, 1.0, -0.9, 1.1);
plcol0 (1);
plw3d (1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, $alt[$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 ($opt[$k]) {
plline3 ($x, $y, $z);
} else {
# plpoin3 ($x, $y, $z, 1);
# U+22C5 DOT OPERATOR.
plstring3($x, $y, $z, "⋅" );
}
plcol0 (3);
$title = sprintf ("#frPLplot Example 18 - Alt=%.0f, Az=%.0f",
$alt[$k], $az[$k]);
plmtex (1.0, 0.5, 0.5, "t", $title);
}
plend ();
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