How to put more information on my R Pie Chart ?
I have the following simple R code.

    vect <- c(a = 4, b = 7, c = 5)
    pie(vect, labels = c("A", "B", "C"), col = c("#999999", "#6F6F6F", "#000000"))

that print the following pie chart 

![enter image description here][1]

How do I modify the above code to print more detail on my pie chart, so that it look like this other one ?

![enter image description here][2]

Thanks for any reply !

  [1]: http://i.stack.imgur.com/IJ0lx.png
  [2]: http://i.stack.imgur.com/vFWer.png
How to put more information on my R Pie Chart ?
===

I have the following simple R code.

    vect <- c(a = 4, b = 7, c = 5)
    pie(vect, labels = c("A", "B", "C"), col = c("#999999", "#6F6F6F", "#000000"))

that print the following pie chart 

![enter image description here][1]

How do I modify the above code to print more detail on my pie chart, so that it look like this other one ?

![enter image description here][2]

Thanks for any reply !

  [1]: http://i.stack.imgur.com/IJ0lx.png
  [2]: http://i.stack.imgur.com/vFWer.png