[Help-gsl] Non-linear fitting and complex data

[Saurav Pathak]

Hi,

I am trying to fit real parameters using a complex function.  That is, 
the GSL example:
(http://www.gnu.org/software/gsl/manual/html_node/Example-programs-for-Nonlinear-Least_002dSquares-Fitting.html)

int expb_f (const gsl_vector * x, void *data, 
            gsl_vector * f)


f in my case is complex.  This means, my Jacobian too is complex. 

It is not clear to me from the example how I may specify this.   Could 
someone please help?

Thanks,
Saurav