/usr/share/doc/libplplot12/examples/perl/x11.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 | #! /usr/bin/env perl
#
# Demo x11 for the PLplot PDL binding
#
# 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
# SYNC: x11c.c 1.24
use PDL;
use PDL::Graphics::PLplot;
use constant XPTS => 35; # Data points in x
use constant YPTS => 46; # Data points in y
use constant LEVELS => 10;
@opt = (DRAW_LINEXY, DRAW_LINEXY);
@alt = (33.0, 17.0);
@az = (24.0, 115.0);
@title = (
"#frPLplot Example 11 - Alt=33, Az=24, Opt=3",
"#frPLplot Example 11 - Alt=17, Az=115, Opt=3"
);
sub cmap1_init {
my $i = pdl [0.0, # left boundary
1.0]; # right boundary
my $h = pdl [240, # blue -> green -> yellow ->
0]; # -> red
my $l = pdl [0.6, 0.6];
my $s = pdl [0.8, 0.8];
plscmap1n (256);
plscmap1l(0, $i, $h, $l, $s, pdl ([]));
}
# main
#
# Does a series of mesh plots for a given data set, with different
# viewing options in each plot.
my $nlevel = LEVELS;
# Parse and process command line arguments
plParseOpts (\@ARGV, PL_PARSE_SKIP | PL_PARSE_NOPROGRAM);
# Initialize plplot
plinit ();
$z = zeroes (XPTS, YPTS);
my $x = 3 * (sequence (XPTS) - int(XPTS / 2)) / int(XPTS / 2);
my $y = 3 * (sequence (YPTS) - int(YPTS / 2)) / int(YPTS / 2);
# The code below may be vectorized to improve speed
for (my $i = 0; $i < XPTS; $i++) {
my $xx = $x->index ($i);
for (my $j = 0; $j < YPTS; $j++) {
my $yy = $y->index ($j);
$z->slice ("$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));
}
}
$zmax = max ($z);
$zmin = min ($z);
$step = ($zmax - $zmin) / ($nlevel + 1);
$clevel = $zmin + $step + $step * sequence ($nlevel);
cmap1_init ();
for (my $k = 0; $k < 2; $k++) {
for (my $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 (0.0, 0, 0.0, 0, 0.0, 4,
"bnstu", "x axis", "bnstu", "y axis", "bcdmnstuv", "z axis");
plcol0 (2);
# wireframe plot
if ($i == 0) {
plmesh ($x, $y, $z, $opt[$k])
# magnitude colored wireframe plot
} elsif ($i == 1) {
plmesh ($x, $y, $z,$opt[$k] | MAG_COLOR);
# magnitude colored wireframe plot with sides
} elsif ($i == 2) {
plot3d ($x, $y, $z, $opt[$k] | MAG_COLOR, 1);
# magnitude colored wireframe plot with base contour
} elsif ($i == 3) {
plmeshc ($x, $y, $z, $opt[$k] | MAG_COLOR | BASE_CONT, $clevel);
}
plcol0 (3);
plmtex (1.0, 0.5, 0.5, "t", $title[$k]);
}
}
plend();
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