#13519: Spline is not recomputed when interpolation points change
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   Reporter:  jvkersch   |             Owner:  jason, jkantor
       Type:  defect     |            Status:  new           
   Priority:  major      |         Milestone:  sage-5.4      
  Component:  numerical  |          Keywords:  spline, gsl   
Work issues:             |   Report Upstream:  N/A           
  Reviewers:             |           Authors:                
  Merged in:             |      Dependencies:                
   Stopgaps:             |  
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 The `sage.gsl.interpolation.Spline` class does not recompute the spline
 when the interpolation points are changed:

 {{{
 sage: S = spline([(1,1), (2,3), (4,5), (5, 4)]); S
 [(1, 1), (2, 3), (4, 5), (5, 4)]
 sage: S(4.1)
 4.953437500000001
 sage: del S[1]; S
 [(1, 1), (4, 5), (5, 4)]
 sage: S(4.1)
 4.953437500000001
 sage: S.append((4, 100)); S
 [(1, 1), (4, 5), (5, 4), (4, 100)]
 sage: S(4.1)
 4.953437500000001
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13519>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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