Description Usage Arguments Details Value Author(s) References See Also Examples
Extract either all or only the interior knots from an object of class dierckx.
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Fn |
an object of class dierckx |
interior |
logical: if TRUE, the first Fn[["k"]]+1 of Fn[["knots"]] are dropped, and the next Fn[["g"]] are returned. Otherwise, the first Fn[["n"]] of Fn[["knots"]] are returned. |
... |
ignored |
The knots component of at least some dierckx objects is of length Fn[["nest"]], but only the first Fn[["n"]] of them are actually used. Moreover, the first and last Fn[["k"]]+1 of them are end knots while the remaining Fn[["g"]] are interior knots.
Numeric vector. If 'interior' is TRUE, this vector has length = Fn[["g"]]. Otherwise, it has length Fn[["n"]].
Sundar Dorai-Raj
Dierckx, P. (1991) Curve and Surface Fitting with Splines, Oxford Science Publications.
curfit
,
concon
,
spline
,
smooth.spline
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