32 lines
1001 B
Mathematica
32 lines
1001 B
Mathematica
## Copyright (C) 2023 Estevan
|
|
##
|
|
## 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 <https://www.gnu.org/licenses/>.
|
|
|
|
## -*- texinfo -*-
|
|
## @deftypefn {} {@var{retval} =} fftfreq (@var{input1}, @var{input2})
|
|
##
|
|
## @seealso{}
|
|
## @end deftypefn
|
|
|
|
## Author: Estevan <Estevan@BAISETAMEREDARR>
|
|
## Created: 2023-02-18
|
|
|
|
function f = fftfreq(n, dt)
|
|
if nargin < 2
|
|
dt = 1;
|
|
end
|
|
f = (0:n-1) / n;
|
|
f = fftshift(f);
|
|
f = f - floor(n/2) / n;
|
|
f = f / dt; |