Solves nonnegative least-squares curve fitting problems.
x = lsqnonneg(C,d) x = lsqnonneg(C,d,param) [xopt,resnorm,residual,exitflag,output,lambda] = lsqnonneg( ... )
a matrix of doubles, represents the multiplier of the solution x in the expression C*x - d. C is M-by-N, where M is the number of equations, and N is the number of elements of x.
a vector of doubles, represents the additive constant term in the expression C*x - d. d is M-by-1, where M is the number of equations.
a vector of doubles, the computed solution of the optimization problem.
a double, objective value returned as the scalar value norm(C*x-d)^2.
a vector of doubles, solution residuals returned as the vector C*x-d.
Integer identifying the reason the algorithm terminated.
Structure containing information about the optimization.
Structure containing the Lagrange multipliers at the solution x (separated by constraint type).
Solves nonnegative least-squares curve fitting problems specified by :
We are calling IPOpt for solving the nonnegative least-squares curve fitting problems, IPOpt is a library written in C++. The code has been written by Andreas Wächter and Carl Laird.
A basic lsqnonneg problem C = [ 0.0372 0.2869 0.6861 0.7071 0.6233 0.6245 0.6344 0.6170]; d = [ 0.8587 0.1781 0.0747 0.8405]; [xopt,resnorm,residual,exitflag,output,lambda] = lsqnonneg(C,d) |  |  |