Re: [Maxima-discuss] Reg. Polynomial curve fit

[Stavros M. (Σ. Μ. <mac...@al...>]

Forwarding to mailing list.
On Jan 1, 2015 10:22 PM, "Dr. M Kanagasabapathy" <rr...@gm...> wrote:

> Dear Stavros Macrakis
>
> Thank you for your prompt reply. I just give the codes here for the
> polynomial curve fit.
>
>  load (lsquares) $
>   p:matrix([x1, y1], [x2, y2], [x3, y3], [x4, y4], [x5, y5])$
>   lsquares_estimates (p, [x,y], y = a*x^4 + b*x^3+c*x^2+d*x+e, [a, b,c, d,
> e]), numer;
>
> In addition to this, kindly help me to load a set of data (x , y sets) in
> notepad text format into Maxima.
>
> Thank you
> With kind regards,
> Dr M kanagasabapathy
>
>
>
> On Fri, Jan 2, 2015 at 5:52 AM, Stavros Macrakis (Σταῦρος Μακράκης) <
> mac...@al...> wrote:
>
>> Also, please do not spam our mailing lists.
>>
>> A message to maxima-discuss is appropriate.
>> Messages to maxima-bugs and maxima-commits are not.
>>
>>              -s
>>
>> On Thu, Jan 1, 2015 at 10:14 AM, Dr. M Kanagasabapathy <rr...@gm...>
>> wrote:
>>
>>> Dear Maxima members,
>>> I am a very newbie to Maxima. Actually I am shifting from mathematica.
>>> Really Maxima is rather intuitive.  I have 'n' number of x, y data sets and
>>> i wish to fit in the form of (n-1) order polynomial equation. y =
>>> a*x^(n-1)+b*x^(n-2) ....and so on. I have tried these codes:
>>> load (lsquares) $
>>> p:matrix([x, y set Data 1], [x, y set Data 2], [x, y set Data 3]...)
>>> lsquares_estimates ( p, [x,y], a*x^(n-1)+b*x^(n-2) ..., [a, b,c,...]);
>>>
>>> But it throws syntax error. Kindly give the exact code for the
>>> polynomial fit for numeric data.
>>>
>>> *Also please help me to get the code to load a set of numeric data from
>>> an Excel file into Maxima.*
>>>
>>> I am so grateful for any help for this.
>>>
>>> Thank you
>>>
>>> With kind regards
>>> Dr M Kanagasabapathy
>>>
>>>
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>