OK. Thanks for the info. I thought it was powers of x.
Amit
On 09/05/2011 10:49 AM, David Nečas (Yeti) wrote:
> Please configure your e-mail client to send plain text e-mail or, at
> least, send them also as plain text.
>
> On Sun, Sep 04, 2011 at 07:24:09PM +0300, Amit Finkler wrote:
>> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>> <html style="direction: ltr;">
>> <head>
>>
>> <meta http-equiv="content-type" content="text/html;
>> charset=ISO-8859-1"><style>body
>> p { margin-bottom: 0cm; margin-top: 0pt; }</style>
>> </head>
>> <body style="direction: ltr;"
>> bidimailui-detected-decoding-type="latin-charset" bgcolor="#ffffff"
>> text="#000000">
>> <p>Hi,</p>
>> <p><br>
>> Is there any way of knowing the equation of the plane removed
>> using 'remove polynomial background' ?</p>
>> <p>Thank you</p>
>> <p>Amit Finkler<br>
>> </p>
>> </body>
>> </html>
> The polynomial levelling does not fit the powers 1, x, x², x³, etc.
> because their orthogonality is poor but, equivalently, it fits and
> subsequently subtracts Legendre polynomials up to the specified degree.
> The usual polynomial coefficients are not even calculated as they are
> not needed for anything. So there is no easy way of obtaining them.
>
> Regards,
>
> Yeti
>
>
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