/usr/share/doc/libplplot11/examples/perl/x15.pl is in libplplot-dev 5.9.9-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 | #! /usr/bin/env perl
#
# Demo x15 for the PLplot PDL binding
#
# Shade 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: x15c.c 1.16
use PDL;
use PDL::Graphics::PLplot;
use constant XPTS => 35; # Data points in x
use constant YPTS => 46; # Data points in y
$z = zeroes (XPTS, YPTS);
my $zmin, $zmax;
# Function prototypes
sub plot1 ();
sub plot2 ();
sub f2mnmx ($);
sub cmap1_init1 ();
sub cmap1_init2 ();
# main
#
# Does a variety of shade plots
sub main {
# Parse and process command line arguments
plParseOpts (\@ARGV, PL_PARSE_SKIP | PL_PARSE_NOPROGRAM);
# Set up color map 0
#
# plscmap0n(3);
#
# Set up color map 1
cmap1_init2 ();
# Initialize plplot
plinit ();
# Set up data array
my $xx = (sequence (XPTS) - int(XPTS / 2)) / int(XPTS / 2);
my $yy = (sequence (YPTS) - int(YPTS / 2)) / int(YPTS / 2) - 1.0;
for (my $i = 0; $i < XPTS; $i++) {
my $xi = $xx->index ($i);
for (my $j = 0; $j < YPTS; $j++) {
my $yi = $yy->index ($j);
$z->slice ("$i,$j") .= $xi ** 2 - $yi ** 2
+ ($xi - $yi) / ($xi * $xi + $yi ** 2 + 0.1);
}
}
($zmin, $zmax) = f2mnmx ($z);
plot1 ();
plot2 ();
plot3 ();
plend();
}
# cmap1_init1
#
# Initializes color map 1 in HLS space
sub cmap1_init1 () {
my $i = pdl [0, # left boundary
0.45, # just before center
0.55, # just after center
1]; # right boundary
my $h = pdl [260, # hue -- low: blue-violet
260, # only change as we go over vertex
20, # hue -- high: red
20]; # keep fixed
my $l;
if (1) {
$l = pdl [0.5, # lightness -- low
0.0, # lightness -- center
0.0, # lightness -- center
0.5]; # lightness -- high
} else {
plscolbg (255, 255, 255);
$l = pdl [0.5, # lightness -- low
1.0, # lightness -- center
1.0, # lightness -- center
0.5]; # lightness -- high
}
my $s = pdl [1, # maximum saturation
1, # maximum saturation
1, # maximum saturation
1]; # maximum saturation
plscmap1l (0, $i, $h, $l, $s, pdl ([]));
}
# cmap1_init2
#
# Initializes color map 1 in HLS space
sub cmap1_init2 () {
my $i = pdl [0, # left boundary
0.45, # just before center
0.55, # just after center
1]; # right boundary
my $h = pdl [260, # hue -- low: blue-violet
260, # only change as we go over vertex
20, # hue -- high: red
20]; # keep fixed
my $l;
if (1) {
$l = pdl [0.6, # lightness -- low
0.0, # lightness -- center
0.0, # lightness -- center
0.6]; # lightness -- high
} else {
plscolbg (255, 255, 255);
$l = pdl [0.5, # lightness -- low
1.0, # lightness -- center
1.0, # lightness -- center
0.5]; # lightness -- high
}
my $s = pdl [1, # maximum saturation
0.5, # maximum saturation
0.5, # maximum saturation
1]; # maximum saturation
plscmap1l (0, $i, $h, $l, $s, pdl ([]));
}
# plot1
#
# Illustrates a single shaded region
sub plot1 () {
my $sh_cmap = 0;
my $min_color = 0;
my $min_width = 0;
my $max_color = 0;
my $max_width = 0;
pladv (0);
plvpor (0.1, 0.9, 0.1, 0.9);
plwind (-1.0, 1.0, -1.0, 1.0);
# Plot using identity transform
my $shade_min = $zmin + ($zmax - $zmin) * 0.4;
my $shade_max = $zmin + ($zmax - $zmin) * 0.6;
my $sh_color = 7;
my $sh_width = 2;
my $min_color = 9;
my $max_color = 2;
my $min_width = 2;
my $max_width = 2;
plpsty (8);
plshade1 ($z, -1, 1, -1, 1,
$shade_min, $shade_max, $sh_cmap, $sh_color, $sh_width,
$min_color, $min_width, $max_color, $max_width,
1, "", "", 0);
plcol0 (1);
plbox (0.0, 0, 0.0, 0, "bcnst", "bcnstv");
plcol0 (2);
pllab ("distance", "altitude", "Bogon flux");
}
# plot2
#
# Illustrates multiple adjacent shaded regions, using different fill
# patterns for each region
sub plot2 () {
my $nlin = pdl [1, 1, 1, 1, 1, 2, 2, 2, 2, 2];
my $inc = pdl [ [450, 0], [-450, 0], [0, 0], [900, 0],
[300, 0], [450,-450], [0, 900], [0, 450],
[450, -450], [0, 900] ];
my $spa = pdl [ [2000, 2000], [2000, 2000], [2000, 2000],
[2000, 2000], [2000, 2000], [2000, 2000],
[2000, 2000], [2000, 2000], [4000, 4000],
[4000, 2000] ];
my $sh_cmap = 0;
my $min_color = 0;
my $min_width = 0;
my $max_color = 0;
my $max_width = 0;
my $sh_width = 2;
pladv (0);
plvpor (0.1, 0.9, 0.1, 0.9);
plwind (-1.0, 1.0, -1.0, 1.0);
# Plot using identity transform
for (my $i = 0; $i < 10; $i++) {
my $shade_min = $zmin + ($zmax - $zmin) * $i / 10.0;
my $shade_max = $zmin + ($zmax - $zmin) * ($i + 1) / 10.0;
my $sh_color = $i + 6;
my $n = $nlin->slice("($i)");
my $nm1 = $n - 1;
plpat ($n, $inc->slice("0:$nm1,($i)"), $spa->slice("0:$nm1,($i)"));
plshade1 ($z, -1, 1, -1, 1,
$shade_min, $shade_max, $sh_cmap, $sh_color, $sh_width,
$min_color, $min_width, $max_color, $max_width,
1, "", "", 0);
}
plcol0 (1);
plbox (0.0, 0, 0.0, 0, "bcnst", "bcnstv");
plcol0 (2);
pllab ("distance", "altitude", "Bogon flux");
}
# plot3
#
# Illustrates shaded regions in 3d, using a different fill pattern for
# each region.
sub plot3 () {
my $xx = pdl [ [-1.0, 1.0, 1.0, -1.0, -1.0],
[-1.0, 1.0, 1.0, -1.0, -1.0] ];
my $yy = pdl [ [1.0, 1.0, 0.0, 0.0, 1.0],
[-1.0, -1.0, 0.0, 0.0, -1.0] ];
my $zz = pdl [ [0.0, 0.0, 1.0, 1.0, 0.0],
[0.0, 0.0, 1.0, 1.0, 0.0] ];
pladv (0);
plvpor (0.1, 0.9, 0.1, 0.9);
plwind (-1.0, 1.0, -1.0, 1.0);
plw3d (1., 1., 1., -1.0, 1.0, -1.0, 1.0, 0.0, 1.5, 30., -40,);
# Plot using identity transform
plcol0 (1);
plbox3 (0.0, 0, 0.0, 0, 0.5, 0, "bntu", "X", "bntu", "Y", "bcdfntu", "Z");
plcol0 (2);
pllab ("","","3-d polygon filling");
plcol0 (3);
plpsty (1);
plline3 ($xx->slice(":,0"), $yy->slice(":,0"), $zz->slice(":,0"));
plfill3 (4, $xx->slice("0:4,0"), $yy->slice("0:4,0"), $zz->slice("0:4,0"));
plpsty (2);
plline3 ($xx->slice(":,1"), $yy->slice(":,1"), $zz->slice(":,1"));
plfill3 (4, $xx->slice("0:4,1"), $yy->slice("0:4,1"), $zz->slice("0:4,1"));
}
# f2mnmx
#
# Returns min & max of input 2d array
sub f2mnmx ($) {
my $f = shift;
return (min ($f), max ($f));
}
main ();
|