1、1jix(m) s=s+1; elseif x(n)=x(m) s=s+0; else s=s-1; end end end %计算vars和e%vars=len*(len-1)*(2*len+5)/18;%计算zc %if s zc=(s-1)/sqrt(vars);else zc=(s+1)/sqrt(vars);end %计算zaza=var(x);sign=0;zc1=abs(zc);if zc1 = za sign=1;else sign=0;end %计算倾斜度 ndash = len * ( len - 1 ) / 2;slope1= zeros( ndash, 1 );m=1;
2、for k = 1:len-1,for j = k+1:len,slope1(m) = ( x(j) - x(k) ) / ( j - k ) ; % m = m + 1;end;slope= median( slope1 );2、M-K突变检验clc;y=data(1:50,6);%输入数据n=length(y);Sk=zeros(size(y);UFk=zeros(size(y);s1=0;for i=2:n % for j=1:i if y(i)y(j) s1=s1+1; s1=s1+0; % () end; end;Sk(i)=s1; % E=i*(i-1)/4;Var=i*(i-1)
3、*(2*i+5)/72;UFk(i)=(Sk(i)-E)/sqrt(Var); % y2=zeros(size(y);Sk2=zeros(size(y);UBk=zeros(size(y); s2=0;for i=1:n y2(i)=y(n-i+1); for j=1: if y2(i)y2(j) s2=s2+1; s2=s2+0; end;Sk2(i)=s2; E=i*(i-1)/4; % Sk2(i)的均值 Var=i*(i-1)*(2*i+5)/72; % Sk2(i)的方差 % UBk(i)=0-(Sk2(i)-E)/sqrt(Var); UBk2=zeros(size(y); UBk2(i)=UBk(n-i+1);year=1961:2010;year=year;xlswrite(D:test.xls,year,Sheet1,A1);,UFk,B1,UBk2,C1