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Jul
2
awarded  Curious
Jun
6
revised Minimization in single component of BSpline to extract points
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Jun
5
awarded  Teacher
Jun
5
revised Minimization in single component of BSpline to extract points
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Jun
5
revised Minimization in single component of BSpline to extract points
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Jun
5
revised Minimization in single component of BSpline to extract points
edited body
Jun
5
comment Minimization in single component of BSpline to extract points
Ok, thanks! That indeed was the problem. Unfortunately the implemented minimization routines, NMinimize & FindMinimum don't seem very efficient in this case.
Jun
5
accepted Minimization in single component of BSpline to extract points
Jun
5
comment Minimization in single component of BSpline to extract points
Again, why exactly the downvote?
Jun
5
revised Minimization in single component of BSpline to extract points
added 161 characters in body
Jun
5
revised Minimization in single component of BSpline to extract points
added 161 characters in body
Jun
5
comment Minimization in single component of BSpline to extract points
Yes my data has just two global extrema. But I am not looking for the extrema in my data, but for the extrema in Abs[Spline[data][[1]]-x0]. This has its global minimum exactly at the point where Spline[data][[1]]=x0, as Bob Hanlon showed. By the way any global maximum is also a local maximum.
Jun
4
answered Minimization in single component of BSpline to extract points
Jun
4
comment Minimization in single component of BSpline to extract points
A problem with this approach is the variability of the precision, depending on dx/dt.
Jun
4
revised Minimization in single component of BSpline to extract points
added 61 characters in body
Jun
3
awarded  Commentator
Jun
3
comment Minimization in single component of BSpline to extract points
Hi ubpdqn, thanks for your workaround. I would still be interested though, why my code did not work.
Jun
3
revised Minimization in single component of BSpline to extract points
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Jun
3
revised Minimization in single component of BSpline to extract points
added 79 characters in body
Jun
3
asked Minimization in single component of BSpline to extract points