dec.m

来自「描述混沌现象的判断及其使用MATLAB对该过程的仿真的程序源码」· M 代码 · 共 20 行

function Y = dec(X,w);
%Y = dec(X) downsampling of a matrix
%
%    X - input matrix
%    w - choose rows or columns
%        w == 1: downsample rows by 2
%        w == 2: downsample columns by 2
%
%    Y - output matrix

%    (Oliver Rockinger 16.08.99)

[a b] = size(X);
if w == 1
  Y = X(1:2:a, :);
else
  Y = X(:, 1:2:b);
end;