Polyfit with scaling - Q regarding polyconf

[Ben Abbott]

On Feb 13, 2008, at 3:32 PM, Thomas Weber wrote:

> On 13/02/08 07:34 -0800, Ben Abbott wrote:
>> The only thing that appears to agree with Matlab is the result from
>> polyval() ... which doesn't surprise me since I'm not clear on what
>> polyconf() is supposed to be doing ... I had thought one of its four
>> modes of operation would be equivalent to polyval().
>>
>> If you (anyone?) has insight into how the algorithm for polyconf()
>> should be written, feel free to pick apart the one I posted.
>>
>> Meanwhile, it does appear that we now have a polyfit() and polyval()
>> which respect the scaling, and whether or not a solution for fixing
>> the polyconf(), I'll rewrite polyval() to work independently of it.
>
> Do you know
> http://www.mathworks.com/access/helpdesk/help/toolbox/stats/stats_product_page.html
>
> There's a lot of documentation linked from there, especially
> http://www.mathworks.com/access/helpdesk/help/pdf_doc/stats/stats.pdf
> [beware, that file has 7.5 MB]
>
> Someone with some knowledge in statistics around?

I've been trying to understand this link.

http://www.mathworks.com/access/helpdesk/help/toolbox/curvefit/index.html?/access/helpdesk/help/toolbox/curvefit/bq_5ka6-1_1.html

I appears to have the detail required, but I don't have a sufficient  
grasp of it as of yet.

Ben