repvec.m

来自「This a collection of MATLAB functions fo」· M 代码 · 共 16 行

function x = repvec(x, N)
%function xrep = repvec(x, N)
%
% Replicate a column vector x = [x1; x2; ...] so that
% 
%           x1 x1 x1 ...
% xrep =    x2 x2 x2 ...
%           ...
%
% This function is much faster than using the MatLab function REPMAT.
% ie, xr = repmat(x, 1, N);
%
% Tim Bailey 2005.

x = x(:, ones(1,N));