Hi, I personally prefer to get the representation of the polynomial in the physical coordinates. However, I guess that using a simple scaling, we can obtain the coefficients in other representations. Best regards, Kiarash,
On Jul 2, 2013, at 4:35 AM, David Nečas (Yeti) <[email protected]> wrote: > On Fri, Jun 28, 2013 at 04:31:33PM -0700, Kiarash Zamani Aghaie wrote: >> I had a quick question about the polynomial background leveling. I am >> imaging cylindrically shaped objects. To level my data, I use >> polynomial background leveling first. I align the x axis to the axis >> of my cylindrical objects. I set the horizontal polynomial degree to >> "1" and the vertical polynomial degree to "2". I was wondering if >> there is an easy way to have access to the coefficients of these >> fitted polynomials (in the manual, they are denoted as a_{j,k}). I >> guess that extracting the background is probably helpful. From this, I >> can probably extract these coefficients. I was wondering if there is >> an easier way. > > Hello, unfortnately, the coefficients are not exported or shown > numerically anywhere at present. This is not the first time a similar > request was made. I'll have to think how to make them accessible. What > is the preferred representation of the polynomial? In real physical > coordinates, in pixel coordinates, in coordinates rescaled to [-1,1] > (that's what is actually used inside the implementations), ...? > > Yeti > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Windows: > > Build for Windows Store. > > http://p.sf.net/sfu/windows-dev2dev > _______________________________________________ > Gwyddion-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/gwyddion-users ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
