/usr/share/octave/packages/communications-1.2.0/rledeco.m is in octave-communications-common 1.2.0-1build1.
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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 | ## Copyright (C) 2006 Muthiah Annamalai <muthiah.annamalai@uta.edu>
##
## 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 3 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.
##
## You should have received a copy of the GNU General Public License along with
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} rledeco (@var{message})
##
## Returns decoded run-length @var{message}. The RLE encoded @var{message}
## has to be in the form of a row-vector. The message format (encoded RLE)
## is like repetition [factor, value]+.
##
## An example use of @code{rledeco} is
## @example
## @group
## message = [1 5 2 4 3 1];
## rledeco (message)
## @result{} [5 4 4 1 1 1]
## @end group
## @end example
## @seealso{rledeco}
## @end deftypefn
function rmsg = rledeco (message)
if (nargin != 1)
print_usage ();
endif
rmsg = [];
L = length (message);
itr = 1;
while (itr < L)
times = message(itr);
val = message(itr+1);
rmsg = [rmsg val * (ones (1, times))];
itr = itr + 2;
endwhile
endfunction
%!assert (rledeco ([1 5 2 4 3 1]), [5 4 4 1 1 1])
%% Test input validation
%!error rledeco ()
%!error rledeco (1, 2)
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