What Is Optimization Toolbox?

lsqcurvefitoutputupperUpper bounds ubStructure containing information about theoptimization. The fields of the structure areiterationsfuncCountalgorithmcgiterationsstepsizefirstorderoptNumber of iterations takenNumber of function evaluationsAlgorithm usedThe number of PCG iterations(large-scale algorithm only)The final step size taken(medium-scale algorithm only).Measure of first-orderoptimality (large-scalealgorithm only).For large-scale boundconstrained problems, thefirst-order optimality isthe infinity norm of v.*g,where v is defined as in “BoxConstraints” on page 4-10, andg is the gradient g = J T F (see“Nonlinear Least-Squares” onpage 4-12).Note The sum of squares should not be formed explicitly. Instead, yourfunction should return a vector of function values. See the examplesbelow.OptionsOptimization options used by lsqcurvefit. Some options apply toall algorithms, some are only relevant when using the large-scalealgorithm, and others are only relevant when you are using the8-145