eval.posfd {fda} | R Documentation |
Evaluate a positive functional data object at specified argument values, or evaluate a derivative of the functional object.
eval.posfd(evalarg, Wfdobj, Lfdobj=int2Lfd(0))
evalarg |
a vector of argument values at which the functional data object is to be evaluated. |
Wfdobj |
a functional data object that defines the positive function to be evaluated. Only univariate functions are permitted. |
Lfdobj |
a nonnegative integer specifying a derivative to be evaluated. AT this time of writing, permissible derivative values are 0, 1 or 2. A linear differential operator is not allowed. |
A positive function data object $h(t)$ is defined by $h(t) =[exp Wfd](t)$.
The function Wfdobj
that defines the positive function is
usually estimated by positive smoothing function
smooth.positive
a matrix containing the positive function
values. The first dimension corresponds to the argument values in
evalarg
and
the second to replications.
eval.fd, eval.monfd