Re: fitting, step

On Wed, Jul 07, 2010 at 20:36 -0400, Maurice Leutenegger wrote:
> When I relaxed the constraints:
>
> set_par ("egauss(1).center", 3.0325, 0, 2.7, 3.3);
> set_par ("egauss(1).sigma", 0.002, 0, 0.0, 0.01);
>
> and then fit with mpfit / chisqr:sigma=gehrels, everything works  
> beautifully.

Good.

>
> So now my question is: suppose I really want to do a fit with the
> original parameter constraints. Do I need to use subplex? Is there a way
> to make mpfit work?

mpfit can be made to work in this situation, but I first need to
modify the isis fit method interface to provide some additional
controls.

I'll make the necessary changes for the next release.

Thanks,
-John
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