curve fitting: problem using fitoptions

2012 4 23
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Hey hey,
i try to fit a function. If i use the following code i don't get an error but the fitting is horrible.
g=fittype(sin(pi/2*(Cs*0.5^3*x^4 - 2*Dz*x^2));,...
'independent','x');
[c2,gof2] = fit(x.',data,g)
Now want to use some other fitting methodes for example:
s = fitoptions('Method','NearestInterpolant');
g=fittype(sin(pi/2*(Cs*0.5^3*x^4 - 2*Dz*x^2));,...
'independent','x','option',s);
[c2,gof2] = fit(x.',data,g)
But there i get an error:
??? There is no 'lower' property in the 'interpoptions' class.
Error in ==> fit at 290 lowerbnd = get(options,'lower');
Error in ==> PCTF_fitting at 46 [c2,gof2] = fit(k.',((sin(w))).',g)
Thanks for your help
Phil

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Phil
Phil
2012-4-23

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