% function s_t_m=C_CMethod_m(data) %this function calculate time delay and embedding demension with C-C %Method,which proved by H.S.Kim %skyhawk&flyinghawk %****************调试程序段**************************** clear all; data=load('f:/sunpot/monthly sunpot number.txt'); data=data(:,3)'; %************************************************ N=length(data); max_d=9;%the maximum value of the time delay sigma=std(data);%calcute standard deviation s_d for m=2:5 for t=1:max_d t for j=1:4 r=sigma*j/2; data_d=disjoint(data,N,t);%将时间序列分解成t个不相交的时间序列 [ll,N_d]=size(data_d); s_t3=0; for i=1:t Y=data_d(i,:); C_1(i)=correlation_integral(Y,N_d,r);%计算C(1,N_d,r,t) X=reconstitution(Y,N_d,m,t);%相空间重构 N_r=N_d-(m-t)*t; C_I(i)=correlation_integral(X,N_r,r);%计算C(m,N_r,r,t) s_t3=s_t3+(C_I(i)-C_1(i)^m);%对t个不相关的时间序列求和 end s_t2(j)=s_t3/t; end s_t_m(t,m)=max(s_t2)-min(s_t2); end end fid=fopen('s_t_m.txt','w'); fprintf(fid,'%f %f %f %f\n',s_t_m); fclose(fid); t=1:max_d; plot(t,s_t_m(:,2),t,s_t_m(:,3),'+',t,s_t_m(:,4),'.',t,s_t_m(:,5),'*') 本文来源：https://www.wddqw.com/doc/68667c30ab114431b90d6c85ec3a87c240288ac4.html