The R Project SVN R

\name{read.table.url}
\alias{read.table.url}
\alias{scan.url}
\alias{source.url}
\alias{copy.url}
\alias{url.show}
%- Also NEED an `\alias' for EACH other topic documented here.
\title{Read data and code from web server}
\usage{
read.table.url(url, port=80,check.MIME.type=TRUE ...)
scan.url(url, port=80,check.MIME.type=TRUE ...)
source.url(url, port=80,check.MIME.type=TRUE ...)
copy.url(url, port=80,error.is.fatal=T,file=tempfile(),check.MIME.type=TRUE,drop.ctrl.z=TRUE)
url.show(url,port=80,check.MIME.type=TRUE,file=tempfile(),delete.file=TRUE,...)}
%- maybe also `usage' for other objects documented here.
\arguments{
 \item{url}{URL beginning with \code{http://} }
 \item{port}{ Port number for the HTTP server (usually 80) }
 \item{check.MIME.type}{Check that the document is of a type known to be 
     plain ASCII?}
 \item{\dots}{Arguments to pass to \link{read.table},\link{scan},
     \link{source} or \link{file.show}}
 \item{error.is.fatal}{An HTTP error causes an error instead of a
     warning?}
 \item{file}{File to copy to}
 \item{delete.file}{Delete the file?}
 \item{drop.ctrl.z}{Filter out the EOF (control-Z) character?}  }
\description{ Extensions of \link{read.table},\link{scan}, \link{source}
and \link{file.show} to read text files on a remote HTTP (Web) server.
HTTP errors are handled correctly, but attempts to read non-text files
are currently not (thus the \code{check.MIME.type} option).  }
\value{
 \code{copy.url} returns the name of a temporary file. 
}

\seealso{ \code{\link{read.table}},\code{\link{scan}}, \code{\link{source}},\code{\link{make.socket}},\code{\link{read.socket}},\code{\link{file.show}}}

\examples{
\dontrun{read.table.url("http://lib.stat.cmu.edu/jcgs/tu",skip=4,header=T)}
\dontrun{url.show("http://lib.stat.cmu.edu/datasets/csb/ch11b.txt")}
\dontrun{beaver<-read.table.url("http://lib.stat.cmu.edu/datasets/csb/ch11b.dat",col.names=c("obsnum","day","time","temperature","activity"),row.names=1)}
\dontrun{url.show("http://lib.stat.cmu.edu/datasets/csb/ch3a.txt")}
\dontrun{ozone<-read.table.url("http://lib.stat.cmu.edu/datasets/csb/ch3a.dat",col.names=c("date","day.cts","day.passive","night.cts","night.passive"),na.strings=".")}
}
\keyword{misc}%-- one or more ...