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Math Help - B-Splines and NURBS questions

  1. #1
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    B-Splines and NURBS questions

    Hi everyone.

    Is this the forum to ask a question about B-Spline and NURBS calculations? I have a few question on some class problems I'm working on. I'm looking for information on how to take a set of (x,y) data and find the "best fit" curve using a B-Spline curve.
    Last edited by Cookie Monster; March 17th 2009 at 10:42 PM.
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  2. #2
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    OK, here is my problem:

    The following set of data is to be "best fit" using a quadric (degree=2) B-Spline. The number of control points to be used is 5. Since there are more data points compared to control points a least squares bit fit solution is requiredl Assume the data points will be assigned to parametric (u) values that are spaced evenly from 0 to 1.

    a) Specify an approprate knot vector.
    b) Specifiy u values (locations) where the data points will be assigned for the "best fit".
    c) Determine the control point locations. Note data is 2D (x and y coordinates only) so the z component of the csn be considered as zero for all control points.
    d) Plot the data points and the best fit B-Spline curve
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