Bubble chart min radius

[Madlios]

Hi,

Recently when i render my bubble chart, it seems like i cannot set he radius to below 10 no matter what i do, i want to be able to set min radius to as small as 1 screen pixel if possible.
I cannot seem to find any API to do this. So i'm wondering if this is a bug.

[Mepherotus]

I can confirm this issue with the master api.
This creates a strange behavior, if you set a relative max bubble size than only the bubbles with the rendered size above the max size are reduced in size so you have bubbles with a few points far bigger than the bubbles that should be the biggest ones.

[Mepherotus]

dc.bubbleMixin = function (_chart) {
 var _maxBubbleRelativeSize = 0.3;
 var _minRadiusWithLabel = 10;
 _chart.BUBBLE_NODE_CLASS = 'node';
 _chart.BUBBLE_CLASS = 'bubble';
 _chart.MIN_RADIUS = 10;
 ............
};

try setting
YourChart.MIN_RADIUS = 1;

[gordonwoodhull]

Sounds like there are two bugs here. I had run into the MIN_RADIUS problem before. I think we should add a getter/setter for this, so that it is part of the documented interface.

@Mepherotus, could you elaborate on the max bubble size problem, preferably in a separate issue? The code in both bubbleChart and bubbleOverlay contains the following line:

     _chart.r().range([_chart.MIN_RADIUS, _chart.xAxisLength() * _chart.maxBubbleRelativeSize()]);

Since the radius scale is a linear scale with domain [0,100], you should get a smooth progression from MIN_RADIUS to _chart.xAxisLength() * _chart.maxBubbleRelativeSize() - at least, as long as your domain is actually [0,100]. (Whose is?)

The scale isn't clamped, so if your values go larger than 100, you'll get sizes outside the range. (It's not actually a maximum, it's just what 100 maps to.) But you should never see a bubble with a smaller value get a larger radius, if that's what you mean.

[Mepherotus]

It's really strange, now I can't recreate the issue, maybe it was just a bad dream =D