Surface fitting for data points

Hi,
I got 3D points. The points create something like half of ellipsoid
with a little bet wall behind in the boundaries. I want to visibly
itnot as point but as surface or something like that.I tried to use
delaunay and then trisurf functions. I got somethingthat is similar
to what I want but still not enough good. It too much serrated, and
in the middle of the ellipsoid it's look like realy mess. I tried to
use griddata. When I used my regular axes I got terrible surface.
When I changed the axes it look a little bet better. I am not sure
about it but I think that the difference iscaused from the fact that
griddata tried to fit surface from the form z=f(x,y). My data can't
fit to this category because there is morethen one z value to the
same x,y. I think that when I change the axes the number of those
points is decrease, and the results are better.
I will be grateful to any help.
Thanks
Ditza
.

Relevant Pages

  • Surface fitting to data points
    ... with a little bet wall behind in the boundaries. ... I tried to use griddata. ... When I used my regular axes I ... caused from the fact that griddata tried to fit surface from the form ...
    (comp.soft-sys.matlab)
  • Re: ellipsoid axis length-
    ... we know that the principle ... axes of the ellipsoid is given by the eigenvectors of A. Now how do we ... referred to its three principal axes as coordinate axes. ... A rotation of the coordinate system about the origin is represented by a rotation matrix R, consisting of the cosines of the nine angles of each of the moved half-axes with each of the original half-axes. ...
    (sci.math)
  • Re: Ellipsoid bounding box
    ... I have one technique in mind but can't get forward with it. ... point the gradient (which is normal to the ellipsoid) is orthogonal to ... From similar equation sets I could solve the bounds on ... the other axes too. ...
    (sci.math)
  • Re: Ellipsoid (Was: niggardly redux [Was: All yall, yall...])
    ... one formed by the revolution of an ellipse about one of its axes". ... >ellipsoid of revolution: obtained by rotating an ellipse about one of its ... meaning that a spheroid and ellipsoid are the same. ...
    (alt.usage.english)
  • Re: ellipsoid axis length
    ... we know that the principle ... axes of the ellipsoid is given by the eigenvectors of A. Now how do we ...
    (sci.math)
Loading