c3 scatter chart radius size <p>This has been something that is boggling my mind and its so simple i feel like i should of cracked it already. I just want to use a data set to drive the radius of a scatter plot. </p> <p>I have some test code listed below that has the radius right now tied to d.x When i try and attach it to d.r or even radius it just gives me NaN. What mistake am i making?</p> <pre><code>var chart = c3.generate({ point: { r: function(d) { return d.x *7 ; } }, data: { xs: { user: 'user_x', r: 'radius', }, columns: [ ["user_x", 1, 3.0, 10, 7], ["user", 0.2, 0.2, 0.2, 0.2], ["radius", 4, 5, 6, 7], ], type: 'scatter' }, </code></pre> <p>}); </p> <p>JSfiddle <a href="https://jsfiddle.net/moschmo/war2pxs6/" rel="nofollow">https://jsfiddle.net/moschmo/war2pxs6/</a></p>