clear; x1=-0.05:0.03:0.2; x2=0:0.05:0.35; y1(:,1)=0;y1(:,2)=0;y1(:,3)=0.6;y1(:,4)=0.86;y1(:,5)=0.93;y1(:,6)=0.97;y1(:,7)=0.980;y1(:,8)=0.99;y1(:,9)=1.0; y2(:,1)=0;y2(:,2)=0.1;y2(:,3)=0.38;y2(:,4)=0.68;y2(:,5)=0.87;y2(:,6)=0.92;y2(:,7)=0.98;y2(:,8)=1.0; values = spcrv([[x1(1) x1 x1(end)];[y1(1) y1 y1(end)]],3); plot(values(1,:),values(2,:), 'r--'); hold on; values = spcrv([[x2(1) x2 x2(end)];[y2(1) y2 y2(end)]],3); plot(values(1,:),values(2,:), 'b'); grid on; set(gca,'FontSize',10, 'FontName','Times New Roman'); xlabel('Path correlation ','fontsize',12); ylabel('CDF','fontsize',12); title('Correlation between two path ','fontsize',12); legend('False match','True match');

图如下：