CODEWITHSUNDEEP
labview
abolfazl dehghan
abolfazl dehghan

Reputation: 11

curve fitting in LabView

I am using curve fitting in Labview . I used nonlinear curve fitting. my function is like a*e(-b*x)+c.

How can I extract a, b, and c from this curve fitting. I want to use these coefficients in front panel but I can’t.

Upvotes: 1

Views: 1372

Answers (1)

Ton Plomp
Ton Plomp

Reputation: 3105

The help file for the Exponential Curve fit describes the return parameters enter image description here

  • amplitude returns the amplitude of the fitted model.
  • damping returns the damping of the fitted model.
  • offset returns the offset of the fitted model.

And specfies them:

This VI uses the iterative general Least Square method and the Levenberg-Marquardt method to fit data to an exponential curve of the general form described by the following equation:

f = aebx + c where x is the input sequence X, a is amplitude, b is damping, and c is offset. This VI finds the values of a, b, and c that best fit the observations (X, Y).

Upvotes: 1

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