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Re: Non-Linear implicit Curve Fitting

From: Christian Kascha
Subject: Re: Non-Linear implicit Curve Fitting
Date: Sat, 16 Nov 2013 08:54:45 +0100
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Am 15.11.2013 18:22, schrieb Giftig:
Good Day

I have two data sets.x and F that has about 10000 points each.

I also have the following equation:
F = C_CV .* alpha.^( x - 1) .* sqrt(a .* F.^2+ b * F + c)

I want to fit that equation on the data above. everything is unknown as
Any idea on how to accomplish this?

I tried a few methods put nothing gave me a proper fit

Thank you

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I would try non-linear least squares with "fminsearch" or "fminunc" from the optim package. (


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