/usr/share/octave/packages/communications-1.1.1/rleenco.m is in octave-communications-common 1.1.1-1.
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 | ## 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} {} rleenco (@var{message})
##
## Returns run-length encoded @var{message}. The
## rle form is built from @var{message}. The original @var{message}
## has to be in the form of a row-vector. The encoded @var{message}
## format (encoded RLE) is like [repetition factor]+, values.
##
## An example use of @code{rleenco} is
## @example
## @group
## message=[ 5 4 4 1 1 1]
## rleenco(message) #gives
## ans = [1 5 2 4 3 1];
## @end group
## @end example
## @end deftypefn
## @seealso{rleenco}
function rmsg=rleenco(message)
if nargin < 1
error('Usage: rleenco(message)')
end
rmsg=[];
L=length(message);
itr=1;
while itr <= L
times=0;
val=message(itr);
while(itr <= L && message(itr)==val)
itr=itr+1;
times=times+1;
end
rmsg=[rmsg times val];
end
return
end
%!
%!assert( rleenco([5 4 4 1 1 1]),[1 5 2 4 3 1])
%!
|