Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / signal-1.1.3 / boxcar.m

diff --git a/octave_packages/signal-1.1.3/boxcar.m b/octave_packages/signal-1.1.3/boxcar.m
new file mode 100644 (file)
index 0000000..928a3b5
--- /dev/null
+++ b/octave_packages/signal-1.1.3/boxcar.m
@@ -0,0 +1,30 @@
+## Copyright (C) 2000 Paul Kienzle <pkienzle@users.sf.net>
+##
+## 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/>.
+
+## usage:  w = boxcar (n)
+##
+## Returns the filter coefficients of a rectangular window of length n.
+
+function w = boxcar (n)
+
+  if (nargin != 1)
+    print_usage;
+  elseif !isscalar(n) || n != floor(n) || n <= 0
+    error ("boxcar:  n must be an integer > 0");
+  endif
+
+  w = ones(n, 1);
+
+endfunction