/usr/share/doc/libplplot11/examples/octave/x08c.m is in octave-plplot 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 | ## Copyright (C) 1998, 1999, 2000 Joao Cardoso
## Copyright (C) 2004 Rafael Laboissiere
##
## This program is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by the
## Free Software Foundation; either version 2 of the License, or (at your
## option) any later version.
##
## This program 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
## General Public License for more details.
##
## This file is part of plplot_octave.
## It is based on the corresponding demo function of PLplot.
## Does a series of 3-d plots for a given data set, with different
## viewing options in each plot.
1;
function cmap1_init(g)
i = [0; 1]; # left boundary, right boundary
if (g)
h = [0; 0]; # hue -- low: red (arbitrary if s=0) -- high: red (arbitrary if s=0)
l = [0.5; 1]; # lightness -- low: half-dark -- high: light
s = [0; 0]; # minimum saturation
else
h = [240; 0]; # blue -> green -> yellow -> red
l = [0.6; 0.6];
s = [0.8; 0.8];
endif
plscmap1n(256);
plscmap1l(0, i, h, l, s, zeros(2,1));
endfunction
function ix08c
global MAG_COLOR BASE_CONT SURF_CONT FACETED
XPTS=35; ## Data points in x
YPTS=46; ## Datat points in y
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"];
## Parse and process command line arguments
## (void) plparseopts(&argc, argv, PL_PARSE_FULL);
## Initialize plplot
plinit();
rosen = 1;
x = ((0:XPTS-1) - fix(XPTS / 2)) / fix(XPTS / 2);
y = ((0:YPTS-1) - fix(YPTS / 2)) / fix(YPTS / 2);
if (rosen)
x = x * 1.5;
y = y + 0.5;
endif
[xx, yy] = meshgrid(x,y);
if (rosen)
z = (1 - xx) .^ 2 + 100 .* (yy - xx .^ 2) .^ 2;
if exist ("do_fortran_indexing")
of = do_fortran_indexing;
do_fortran_indexing = 1;
endif
z(z <= 0) = exp(-5); # make sure the minimum after applying log() is -5
if exist ("do_fortran_indexing")
do_fortran_indexing = of;
endif
z = log(z);
else
r = sqrt(xx .* xx + yy .* yy);
z = exp(-r .* r) .* cos(2.0 * 3.141592654 .* r);
endif
pllightsource(1.,1.,1.);
n_col = 100;
plscmap1n(n_col);
nlevel = 10;
zmax = max(max(z));
zmin = min(min(z));
step = (zmax-zmin)/(nlevel+1);
clevel = linspace(zmin+step, zmax-step, nlevel)';
for k=1:2
for ifshade=0:3
pladv(0);
plvpor(0.0, 1.0, 0.0, 0.9);
plwind(-1.0, 1.0, -0.9, 1.1);
plcol0(3);
plmtex("t", 1.0, 0.5, 0.5, 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));
endif
plbox3("bnstu", "x axis", 0.0, 0,
"bnstu", "y axis", 0.0, 0,
"bcdmnstuv", "z axis", 0.0, 0);
plcol0(2);
switch(ifshade)
case 0
cmap1_init(1);
plsurf3d(x', y', z', 0, 0);
case 1
cmap1_init(0);
plsurf3d(x', y', z', MAG_COLOR, 0);
case 2
plsurf3d(x', y', z', MAG_COLOR + FACETED, 0);
otherwise
plsurf3d(x', y', z', MAG_COLOR + SURF_CONT + BASE_CONT, clevel);
endswitch
endfor
endfor
plend1();
endfunction
ix08c
|