polySpline(splines)
polySpline()所属R语言包:splines
Piecewise Polynomial Spline Representation
分段多项式样条表示
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Create the piecewise polynomial representation of a spline object.
创建分段多项式样条线对象的代表性。
用法----------Usage----------
polySpline(object, ...)
as.polySpline(object, ...)
参数----------Arguments----------
参数:object
An object that inherits from class spline.
一个对象类spline继承。
参数:...
Optional additional arguments. At present no additional arguments are used.
可选的附加参数。目前,没有额外的参数。
值----------Value----------
An object that inherits from class polySpline. This is the piecewise polynomial representation of a univariate spline function. It is defined by a set of distinct numeric values called knots. The spline function is a polynomial function between each successive pair of knots. At each interior knot the polynomial segments on each side are constrained to have the same value of the function and some of its derivatives.
一个对象类polySpline继承。这是一个单变量样条函数的分段多项式表示。它是由一组不同的数值称为节。样条函数是一个连续对每节之间的多项式函数。在每个内部结,每边多项式段被限制的功能和它的衍生一些有相同的值。
作者(S)----------Author(s)----------
Douglas Bates and Bill Venables
参见----------See Also----------
interpSpline, periodicSpline, splineKnots, splineOrder
interpSpline,periodicSpline,splineKnots,splineOrder
举例----------Examples----------
require(graphics)
ispl <- polySpline(interpSpline( weight ~ height, women, bSpline = TRUE))
print( ispl ) # print the piecewise polynomial representation[打印分段多项式表示]
plot( ispl ) # plots over the range of the knots[图多海里的范围]
points( women$height, women$weight )
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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