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Re: naive question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg92811] Re: [mg92781] naive question
  • From: "Thomas Dowling" <thomasgdowling at gmail.com>
  • Date: Tue, 14 Oct 2008 04:55:29 -0400 (EDT)
  • References: <200810131018.GAA14277@smc.vnet.net>

Hello,

Something like

In[95]= soln = Fit[{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}, {1, x1, x2}, {x1, x2}]

In[96]= List @@ soln /. Thread[Variables[soln] -> 1]

Out[96]= {1.55556, 0.555556, 0.444444}

would be one way?

Tom Dowling

On Mon, Oct 13, 2008 at 11:18 AM, Francisco Gutierrez <
fgutiers2002 at yahoo.com> wrote:

> Dear Friends:
> I am using Fit within a function, and I want it to produce only a list of
>  coefficients, without the variables.
> For example, if I plug into fit the following:
> Fit[{{1,2,3},{4,5,6},{7,8,9}},{1,x1,x2},{x1,x2}],
> Mathematica produces:
> 1.55556+0.555556 x1+0.444444 x2
>
> I want to get only the following list:
> {1.55556,0.555556,0.444444}
>
> It seem awfully simple, but I haven't managed.
> How can I do it?
> Thanks
> Francisco
>
>


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