[Scilab-users] question non datafit

[Clément David]

Hello Federico, hello all,

Thanks for pointing this, it looks like there is some missing URL redirect somewhere.

google "help scilab datafit" on a private navigation tab redirect to the 5.3.3 help page whereas https://help.scilab.org/datafit looks OK. I will try to update the index to improve that, a related bug is #12746. See https://bugzilla.scilab.org/show_bug.cgi?id=12746 for more information and discussion on that topic, do not hesitate to contribute if you have some SEO knowledge.

Thanks,

--
Clément

> -----Original Message-----
> From: users <users-bounces at lists.scilab.org> On Behalf Of Federico 
> Miyara
> Sent: Tuesday, April 7, 2020 2:28 AM
> To: users at lists.scilab.org
> Subject: Re: [Scilab-users] question non datafit
> 
> 
> Samuel:
> 
> Oh, this is embarrasing... I did a web search on non-linear fit and 
> somehow the top results always point at an outdated version (5.5.2) of 
> Scilab's documentation. I wonder why
> 
> Thanks, the new documentation is much better!
> 
> Regerds,
> 
> Federico Miyara
> 
> 
> 
> 
> On 04/04/2020 06:58, Samuel Gougeon wrote:
> 
> 
> 	Le 04/04/2020 à 09:26, Federico Miyara a écrit :
> 
> 
> 
> 		Dear All,
> 
> 		I'm trying to understand the function datafit.
> 
> 		The documentation says:
> 
> 
> 
> 			datafit is used for fitting data to a model. For a given function 
> G(p,z), this function finds the best vector of parameters p for 
> approximating G(p,z_i)=0 for a set of measurement vectors z_i. Vector 
> p is found by minimizing 
> G(p,z_1)'WG(p,z_1)+G(p,z_2)'WG(p,z_2)+...+G(p,z_n)'WG(p,z_n)
> 
> 
> 
> 		I don't quite understand what is G(p,z_1)'WG(p,z_1). Are some 
> product signs * missing? Shouldn't it be G(p,z_1)'*W*G(p,z_1)? Are 
> these signs implied as in regular algebra notation?
> 
> 
> 
> 
> 
> 	Hello Federico,
> 	Please see the documentation of the latest scilab release:
> 	https://help.scilab.org/docs/6.1.0/en_US/datafit.html
> 	Regards
> 
> 
> 
> 
> 
> 
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