\name{vec2Lfd}
\alias{vec2Lfd}
\title{
  Make a Linear Differential Operator Object from a Vector
}
\description{
A linear differential operator object of order $m$ is
constructed from the number in a vector of length $m$.
}
\usage{
vec2Lfd(bwtvec, rangeval=c(0,1))
}
\arguments{
\item{bwtvec}{
a vector of coefficients to define the linear differential
operator object
}
\item{rangeval}{
a vector of length 2 specifying the range over which the
operator is defined
}
}
\value{
a linear differential operator object
}
\seealso{
\code{\link{int2Lfd}}, 
\code{\link{Lfd}}
}
\examples{
#  define the harmonic acceleration operator used in the
#  analysis of the daily temperature data
harmaccelLfd <- vec2Lfd(c(0,(2*pi/365)^2,0), c(0,365))
}
% docclass is function
\keyword{smooth}