DerivSplines | R Documentation |
Numerical derivatives and integrals of functions bs()
and ns()
at their first argument.
dns(x, df = NULL, knots = NULL, intercept = FALSE, Boundary.knots = range(x), eps = 1e-03) dbs(x, df = NULL, knots = NULL, intercept = FALSE, Boundary.knots = range(x), eps = 1e-03) ins(x, df = NULL, knots = NULL, intercept = FALSE, Boundary.knots = range(x), from = 0, weight.fun = NULL, ...) ibs(x, df = NULL, knots = NULL, intercept = FALSE, Boundary.knots = range(x), from = 0, weight.fun = NULL, ...)
x, df, knots, intercept, Boundary.knots |
see the help pages of functions |
eps |
a numeric scalar denoting the step length for the central difference approximation, which calculates the derivative. |
from |
a numeric scalar denoting the lower limit of the integral. |
weight.fun |
a function to applied as weights. |
... |
extra arguments passed to |
an object of class dns
, dbs
, ins
or ibs
.
Dimitris Rizopoulos d.rizopoulos@erasmusmc.nl
x <- rnorm(10) dns(x, df = 4) ins(x, df = 4)
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