采样点太少,建模水平有限(所以就不建模了)。
sample=CAR3S4LW{:,1:3};
para=CAR3S4LW{:,4};
fre=CAR3S4LW{:,5};
sample_avr=mean(sample,2);
plot3(fre,para,sample_avr,'*');
hold on;
N=300;
[FRE,PARA]=meshgrid(linspace(min(fre),max(fre),N),linspace(min(para),max(para),N));
SAMPLE=griddata(fre,para,sample_avr,FRE,PARA,"cubic");
mesh(FRE,PARA,SAMPLE);
grid on;