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comparison scripts/signal/fractdiff.m @ 3449:858695b3ed62

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[project @ 2000-01-18 04:08:59 by jwe]
author jwe
date Tue, 18 Jan 2000 04:09:14 +0000
parents f8dde1807dee
children e031284eea27
comparison
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3448:0fb75d95b14f 3449:858695b3ed62
12 ## 12 ##
13 ## You should have received a copy of the GNU General Public License 13 ## You should have received a copy of the GNU General Public License
14 ## along with this file. If not, write to the Free Software Foundation, 14 ## along with this file. If not, write to the Free Software Foundation,
15 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 15 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
16 16
17 ## usage: fractdiff(x, d) 17 ## -*- texinfo -*-
18 ## 18 ## @deftypefn {Function File} {} fractdiff (@var{x}, @var{d})
19 ## Computes the fractional differences (1-L)^d x where L denotes the 19 ## Compute the fractional differences @code{(1-@var{L})^@var{d} * @var{x}}
20 ## lag-operator and d > -1. 20 ## where @var{L} denotes the lag-operator and @var{d} is greater than -1.
21 ## @end deftypefn
21 22
22 ## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at> 23 ## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at>
23 ## Description: Compute fractional differences 24 ## Description: Compute fractional differences
24 25
25 function retval = fractdiff (x, d) 26 function retval = fractdiff (x, d)