bbasis: Function for creating B-spline basis functions (Eilers &...
In sommer: Solving Mixed Model Equations in R
bbasis R Documentation
Function for creating B-spline basis functions (Eilers & Marx, 2010)
Description
Construct a B-spline basis of degree deg
with ndx-1 equally-spaced internal knots (ndx segments) on range [x1,xr].
Code copied from Eilers & Marx 2010, WIR: Comp Stat 2, 637-653.
Usage
bbasis(x, xl, xr, ndx, deg)
Arguments
x
A vector. Data values for spline.
xl
A numeric value. Lower bound for data (lower external knot).
xr
A numeric value. Upper bound for data (upper external knot).
ndx
A numeric value. Number of divisions for x range
(equal to number of segments = number of internal knots + 1)
deg
A numeric value. Degree of the polynomial spline.
Details
Not yet amended to coerce values that should be zero to zero!
Value
A matrix with columns holding the P-spline for each value of x.
Matrix has ndx+deg columns and length(x) rows.
sommer documentation built on Sept. 11, 2024, 6:22 p.m.
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| bbasis | R Documentation |
Function for creating B-spline basis functions (Eilers & Marx, 2010)
Description
Construct a B-spline basis of degree deg
with ndx-1 equally-spaced internal knots (ndx segments) on range [x1,xr].
Code copied from Eilers & Marx 2010, WIR: Comp Stat 2, 637-653.
Usage
bbasis(x, xl, xr, ndx, deg)
Arguments
x |
A vector. Data values for spline. |
xl |
A numeric value. Lower bound for data (lower external knot). |
xr |
A numeric value. Upper bound for data (upper external knot). |
ndx |
A numeric value. Number of divisions for x range (equal to number of segments = number of internal knots + 1) |
deg |
A numeric value. Degree of the polynomial spline. |
Details
Not yet amended to coerce values that should be zero to zero!
Value
A matrix with columns holding the P-spline for each value of x.
Matrix has ndx+deg columns and length(x) rows.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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