month.m

matlab中的数据插值描述

%05\06\07每个月具体数据插值
t=001:1:024;
p=[87035 77121 97288 117412 119893 134271 132642 141041 284586 227135 198859 153887 133937 148675 178275 159857 158586 122734 99844 92224 96291 92278 102252 84482];
x=001:1/20:024;
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');