Do not use the 'interior-point' algorithm with complex data. See Fit a Model to Complex-Valued Data. The preconditioner computation used in the preconditioned conjugate gradient part of the trust-region-reflect
Hi. I tried to fit simultaneous ODE using lsqcurvefit. Code works well and provide parameters. But parameters are coming as complex number. In my case parameters must be real number. How to restrict parameters to real numbers using lsqcurvefit?
MATLAB Answers How can I fit a complex valued function to my data? 1 Answer when running lsqcurvefit to fit the complex function: F = a1*exp(-1i*x*a2) + a3*exp(-1i*x*a4), i get a2 and a4 as complex estima... 4 Answers ??? Error using ==> lsqcurvefit at 253 Function val...
What are the parameter value estimates that 'lsqcurvefit' returns? Are the complex parameter estimates conjugates? How well does the resulting function fit the data? 댓글을 달려면 로그인하십시오. 카테고리 Mathematics and OptimizationOptimization ToolboxNonlinear Optimization...
MATLAB Answers lsqcurvefit x solution as an integer 1 回答 complex numbers 2 回答 anonymous function vs local function or M-file function 1 回答 ウェブサイト全体 FIG2CFTOOL File Exchange lsqcurvefit ドキュメンテーション Preconditionnate conjugate gradient File Exchange カテゴリ Mathema...
[x,resnorm,residual,exitflag] = lsqcurvefit(...) [x,resnorm,residual,exitflag,output] = lsqcurvefit(...) [x,resnorm,residual,exitflag,output,lambda] = lsqcurvefit(...) [x,resnorm,residual,exitflag,output,lambda,jacobian] = lsqcurvefit(...) Description lsqcurvefit solves nonlinear data-...
Hello Dear Matlab-Community, I am trying to do a Butterworth-Van Dyke (BVD) siumulation. I calculated my startparameters. Common X-values are between 1 and 3000. Common Y-values are between 1E-2 and 1E-4. I want to optimize 4 parameter (R_m, L_m, C_m, C_0) with TypicalX...
defined function to compute the vector-valued function F (x, xdata). The size of the vector returned by the user-defined function must be the same as the size of the vectors ydata and xdata. Note Passing Extra Parameters explains how to pass extra parameters to the function F, if ...
I'm sorry that I don't have an answer but I am also suffering from the same problem.
Open in MATLAB Online I have a complex data y which should exhibit: ThemeCopy y = a1*exp(-1i*xdata*a2) + a3*exp(-1i*xdata*a4) where a2 and a4 should be real positive values (a1 and a3 can be complex). Now my funct...