Hello everyone! When fitting a curve, the interval of curve x is [-3,3], and another fitted curve will exceed this interval. I don't know where the problem occurred in which piece of code.

code:

load jizuobiao1.mat

f1= fit(THETA11,RHO11,'smoothingspline','SmoothingParam',0.99);%smoothingspline

plot(f1,THETA11,RHO11)

hold on

load jizuobiao2.mat

f2 = fit(THETA12,RHO12,'smoothingspline','SmoothingParam',0.99);%smoothingspline

plot(f2,THETA12,RHO12)

hold on

[KSSV]

You asked this question already....you have not defined THETA11, THETA12 in your code.....on running your code, there is a error...it will not pop the figure attached.