FctArgs: Retrieve a Function's Arguments

In AndriSignorell/DescTools: Tools for Descriptive Statistics

Retrieve a Function's Arguments

Description

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

Usage

FctArgs(name, sort = FALSE)

Arguments

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

Value

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

Author(s)

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

AndriSignorell/DescTools documentation built on Dec. 1, 2024, 5:13 a.m.