Hello,
> pack <- "utils"
> help( write.table, package = pack )
Error in .find.package(package, lib.loc, verbose = verbose) :
there is no package called 'pack'
Replacing this :
if(!missing(package))
if(is.name(y <- substitute(package)))
package <- as.character(y)
by this :
if( !missing(package) ){
ischar <- tryCatch(is.character(package) && length(package) == 1L,
error = identity)
if(inherits(ischar, "error")) ischar <- FALSE
## if this was not a length-one character vector, try for the name.
if(!ischar) {
spackage <- deparse(substitute(package))
if(!is.name(substitute(package)) )
stop("'package' should be a name or a length-one
character
vector")
package <- spackage
}
}
makes these three calls work:
> help( write.table, package = "utils" )
> help( write.table, package = utils )
> help( write.table, package = pack )
... unless utils is a variable
--
Romain Francois
Professional R Enthusiast
+33(0) 6 28 91 30 30
http://romainfrancois.blog.free.fr
|- http://tr.im/BcPw : celebrating R commit #50000
|- http://tr.im/ztCu : RGG #158:161: examples of package IDPmisc
`- http://tr.im/yw8E : New R package : sos