coeffvalues

Coefficient values of cfit or sfit object

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Syntax

coeffvals= coeffvalues(fun)

Description

example

coeffvals= coeffvalues(fun) returns the values of the coefficients, or parameters, of the cfit or sfit object fun as a 1-by-n vector coeffvals, where n = numcoeffs(fun).

Examples

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Open Live Script

Load the data in the census.mat file and construct a fittype for a quadratic polynomial curve.

load census
f = fittype('poly2');

Obtain the coefficient names and the formula for the fittype object f.

coefficientNames = coeffnames(f)
coefficientNames = 3x1 cell
    {'p1'}
    {'p2'}
    {'p3'}


formula(f)
ans = 
'p1*x^2 + p2*x + p3'

Fit the curve to the data and retrieve the coefficient values.

c = fit(cdate,pop,f);
coefficientValues = coeffvalues(c)
coefficientValues = 1×3
104 ×

    0.0000   -0.0024    2.1130

Input Arguments

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Object of which you want to calculate the coefficients, specified as a cfit or sfit object.

Output Arguments

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Values of the coefficients of the cfit or sfit object fun, returned as a scalar or vector.

See Also

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Topics

Introduced before R2006a

Curve Fitting Toolbox Documentation
Support