June 23, 2007
1:48 a.m.
Hi Lin On Fri, Jun 22, 2007 at 07:35:05PM -0700, Lin Shao wrote:
It seems like when calling leastsq(), if the Jacobian matrix is organized as rows of partial derivatives (w.r.t. each variable), then no optimization is done at all -- the return value is the same as the initial guess. It only works when the matrix is columns of derivatives and set the parameter col_deriv to 1.
It would be helpful if you could provide two short snippets of code to illustrate the problems you mention. Regards Stéfan