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Which One Is The Knot Vector?

  1. Mar 25, 2013 #1
    Could someone show me which one is called by the knot vector and how to define it?

    Thank you
     

    Attached Files:

  2. jcsd
  3. Mar 25, 2013 #2

    jedishrfu

    Staff: Mentor

    This may help:

    http://www.rhino3d.com/nurbs/

    It mentions that the knot vector is a list of numbers not a real vector so maybe its related to the point numbering.
     
  4. Mar 25, 2013 #3

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    There are a number of different definitions of "knot" in different types of mathematics. From your graph it appears that you are approximating a function by a "broken line". In this case the "knots" are the points at which the different line segments join so your "knot vector" is simply (b0, b1, b2, b3).
     
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