Statistics Toolbox

nlparci

Confidence intervals on estimates of parameters in nonlinear models

Syntax

• ci = nlparci(beta,r,J)
  

Description

nlparci(beta,r,J) returns the 95% confidence interval ci on the nonlinear least squares parameter estimates beta, given the residuals r and the Jacobian matrix J at the solution. The confidence interval calculation is valid for systems where the number of rows of J exceeds the length of beta.

nlparci uses the outputs of nlinfit for its inputs.

Example

Continuing the example from nlinfit:

• load reaction
  [beta,resids,J] = nlinfit(reactants,rate,'hougen',beta);
  ci = nlparci(beta,resids,J)
  ci =
     -1.0798    3.3445
     -0.0524    0.1689
     -0.0437    0.1145
     -0.0891    0.2941
     -1.1719    3.7321
  

See Also
nlinfit, nlintool, nlpredci

nlintool

nlpredci