Revision d50cda4811eb3cdb8d2ce9e01ddb5e07d4a8c24f authored by HwB on 11 September 2013, 00:00:00 UTC, committed by Gabor Csardi on 11 September 2013, 00:00:00 UTC
1 parent 10ae2bb
piecewise.Rd
\name{piecewise}
\alias{piecewise}
\title{
Piecewise Linear Function
}
\description{
Compute zeros and area of a piecewise linear function.
}
\usage{
piecewise(x, y, abs = FALSE)
}
\arguments{
\item{x, y}{x- and y-coordinates of points defining the piecewise linear function}
\item{abs}{logical; shall the integral or the total area between the
x-axis and the function be calculated}
}
\details{
Compute zeros and integral resp. area of a piecewise linear function
given by points with x and y as coordinates.
}
\value{
Returns a list with the integral or area as first element and the vector
as all zeroes as second.
}
\seealso{
\code{\link{trapz}}
}
\examples{
x <- c(0, 2, 3, 4, 5)
y <- c(2, -2, 0, -2, 0)
piecewise(x, y)
piecewise(x, y, abs=TRUE)
}
\keyword{ math }
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