Is there a way to get a higher order polynomial fit for a surface than poly55

Is there a method a could use to get a higher order polynomial fit for a surface than poly55?

Answer 1

[Torsten]

You can define the fitting polynomial by yourself. Everything is allowed, but does it really make sense to use polynomials of degree > 5 ?

[Xymbu]

Normally, probably not but in the specific case I have yes.

[Xymbu]

so theres no easier way than typing in the equation myself in the cftool or something like that?

[Torsten]

No. If the fitting function is not predefined, you must define it by yourself. Means: type it.

[Xymbu]

Can i input the custom string equation through a function without needing the cftool gui?

[Torsten]

https://de.mathworks.com/matlabcentral/answers/92830-how-do-i-provide-a-function-or-script-name-as-the-fitting-model-for-the-curve-fitting-toolbox-1-1-r