DescTools (version 0.99.57)

FctArgs: Retrieve a Function's Arguments

Description

Retrieve a function's arguments and default values in a list.

Usage

FctArgs(name, sort = FALSE)

Value

a data.frame with the default in the first columns and with row.names as argument names.

Arguments

name

name of the function.

sort

logical. Should the function arguments be sorted? Defaults to FALSE.

Author

Andri Signorell <[e-mail]>

See Also

formalArgs, formals, args, alist, body

Examples

formalArgs(PlotFdist)
formals(PlotFdist)

# compare:
FctArgs(PlotFdist)

# alternative also spotting unexported functions
GetArgs <- function(FUN) {
  a <- formals(getAnywhere(FUN)$objs[[1]])
  arg.labels <- names(a)
  arg.values <- as.character(a)
  char <- sapply(a, is.character)
  arg.values[char] <- paste("\"", arg.values[char], "\"", sep="")

  c(fname=FUN, 
    args=paste(StrTrim(gsub("= $", "", 
               paste(arg.labels, arg.values, sep=" = "))), 
               collapse=", "))

}

fcts <- grep("plot.Desc", unclass(lsf.str(envir = asNamespace("DescTools"), 
                                          all.names = TRUE)), value=TRUE)
fargs <- t(unname(sapply(fcts, GetArgs)))
fargs