jd.m

matlab中的数据插值描述

%05-06季度具体数据插值
t=001:1:008;
p=[261444 371576 558269 579881 460887 441177 288359 279012];
x=001:1/20:008;
yi_linear=interp1(t,p,x);
yi_spline=interp1(t,p,x,'spline');
subplot(2,1,1);
plot(t,p,'ko');hold on;
plot(x,yi_linear,'b','LineWidth',1.5);hold on
plot(x,yi_spline,'m','LineWidth',1.5);
grid on;
title('linear vc spline');