#13530: Hide sage/gsl/interpolation/Spline internals
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Reporter: jvkersch | Owner: jason, jkantor
Type: defect | Status: new
Priority: major | Milestone: sage-5.4
Component: numerical | Resolution:
Keywords: spline, gsl | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Description changed by jvkersch:
Old description:
> The ``list`` member function of ``sage.gsl.interpolation.Spline`` returns
> a reference to the spline interpolation points, allowing one to change
> these points without having the spline be recomputed:
>
> {{{
> sage: s = spline([(0, 0), (1, 2), (2, 4)]); s
> [(0, 0), (1, 2), (2, 4)]
> sage: s(1)
> 2.0
> sage: s.list()[1] = (1, 100); s
> [(0, 0), (1, 100), (2, 4)]
> sage: s(1)
> 2.0
> }}}
New description:
The ```list``` member function of ```sage.gsl.interpolation.Spline```
returns a reference to the spline interpolation points, allowing one to
change these points without having the spline be recomputed:
{{{
sage: s = spline([(0, 0), (1, 2), (2, 4)]); s
[(0, 0), (1, 2), (2, 4)]
sage: s(1)
2.0
sage: s.list()[1] = (1, 100); s
[(0, 0), (1, 100), (2, 4)]
sage: s(1)
2.0
}}}
This issue came up in #12036 and is related to #13520.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13530#comment:1>
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