MATLAB: How to make logaritmic fitting like polyfit function

curve fitting

Hi;

I want to make logaritmic fitting but I don't find any logfit function like polyfit. Is there any function,script etc. that make logaritmic curve fitting in matlab

-edit- (19.10.2018 – 15:20)

I want to this type of curve fitting.

Best Answer

Fit log(x) against y using a linear polynomial in "polyfit". What's the problem ?

Related Solutions

MATLAB: Polynomials fitting

say you have

x = [1 2 3 4];
y = [8 12 16];

then you can fit a polynomial to the region you have data for (the first three samples) using

p = polyfit(x(1:length(y)), y, 1);

and estimate all the samples using

y_est = polyval(p, x);

or just the ones you don't have data for using

y_est = polyval(p, x(length(y)+1:end));

MATLAB: Getting the values from the curve fitted model

If you used fit:

p=fit(...) %your model
y=p(x) %evaluate your model at x

Similarily, if you used polyfit:

p=polyfit(...) %your model
y=polyval(p,x) %evaluate your model at x

Best Answer

Related Solutions

MATLAB: Polynomials fitting

MATLAB: Getting the values from the curve fitted model

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