Bubble chart without Axis in R
<p>I'd like to create such chart in R: <a href="http://bl.ocks.org/mbostock/4063269" rel="nofollow">http://bl.ocks.org/mbostock/4063269</a></p>

<p>so just a bubble chart without axis, where the bubbles can be randomly scattered and only characterized by the size argument. </p>

<p>I'm interested in doing that in R, where familar options to me requires providing x, y and size variables. </p>