Ordinal scale hovering at the chart level

[atdyer]

Keep an eye on d3/d3-scale#60 for the ordinal scale .invert() method. Bar charts, for example, support hovering at the local level, i.e. when the mouse enters an individual bar a hover event is fired. At the chart level, however, hovering is not supported for ordinal scales, i.e. when the mouse is over the chart (but not a bar) an event is fired.

Interested to see how it will be implemented (if at all). With padding between bands, what will .invert() return for a value between bands?

[atdyer]

Strava also has a cool way of doing things, they put a cursor area that extends to the top of the chart over each bar (cursor area width is the same as the bar width). So if a bar is really short you're still able to hover over it.