分位数回归matlab代码

分位数回归函数部分代码如下 function [p,stats]=quantreg(x,y,tau,order,Nboot) if nargin<3 error('Not enougp input arguments.'); end if nargin<4,order=[]; end if nargin<5,Nboot=200; end if(tau<=0)|(tau>=1), error('the percentilr (tau) must be between 0 and 1.') end if size(x,1)~=size(y,1) error('length of x and y must be the same.') end if numel(y)~=size(y,1) error('y must be a column vector.') end if size(x,2)==1 if isempty(order) order=1; end if order>0