fgui: Automatically Creating Widgets for Arguments of a Function – A Quick Example

Here’s something I came across by accident, an R package called fgui which has the ability to automatically create a widget just by passing it a function with parameters, e.g.:

# load packages
require(fgui)

# add two number together and return the value
add <- function(x1,  x2) {
  return(x1 + x2)
}

# execute function through GUI
y <- guiv(add)
# [1] 5

The GUI produced from the code above looks like this:

I love how easy that was to do, very cool, and useful too! The package is a wrapper to the base R package tcltk.