gcommandline: A command line interface

In gWidgets: gWidgets API for building toolkit-independent, interactive GUIs

Description

This constructs a simple command line interface for R

Usage

gcommandline(command = "", assignto = NULL, useGUI = TRUE, useConsole = FALSE, prompt = getOption("prompt"), width = 500, height = 0.6 * width, container = NULL, ...,toolkit =
                 guiToolkit())

Arguments

command	Initial command to evalues
assignto	Assigns output to this variable is non-NULL
useGUI	Is result also printed to GUI. Use FALSE to get text-only instance
useConsole	Is result also printed to console?
prompt	Prompt to use
width	Width of widget in pixels
height	Height of widget in pixels
container	Optional container to attach to
...	Ignored for now
toolkit	Which GUI toolkit to use

Details

Additional commands can be added programmatically with the svalue<- method. The The value assigned is a string containing the command. If it has a names attribute, this is taken as the variable name to assign the output to.

The svalue method returns the command history.

The "[" method can be used to retrieve the command history as well.

Examples

## Not run: 
  obj = gcommandline(container=TRUE)
  svalue(obj) <- "2+2"
  ## assign to x
  command = "rnorm(100)"; names(command) = "x"
  svalue(obj) <- command
  ## look at history
  obj[]

## End(Not run)

gWidgets documentation built on May 2, 2019, 6:22 p.m.