src/chart/baseGroupedStackTimeBarChart.js
function drawHoverHighlightBars(dataArray) {
		var hoverBar = parent.svgHoverRoot.selectAll('rect.highlightbar').data(dataArray);
		hoverBar.attr('x', valueX)
				.attr('width', xBar.rangeBand());
		hoverBar.enter().append('rect')
				.attr('x', valueX)
				.attr('y', 0)
				.attr('height', parent.height)
				.attr('width', xBar.rangeBand())
				.classed('highlightbar clickable', true);
		hoverBar.exit().remove();
	}
function drawHoverHighlightBars(dataArray) {
		var hoverBar = parent.svgHoverRoot.selectAll('rect.highlightbar').data(dataArray);
		hoverBar.attr('x', valueX)
				.attr('width', xBar.rangeBand());
		hoverBar.enter().append('rect')
				.attr('x', valueX)
				.attr('y', 0)
				.attr('height', parent.height)
				.attr('width', xBar.rangeBand())
				.classed('highlightbar clickable', true);
		hoverBar.exit().remove();
	}
function drawHoverHighlightBars ( dataArray ) { var hoverBar = parent . svgHoverRoot . selectAll ( 'rect.highlightbar' ) . data ( dataArray ) ; hoverBar . attr ( 'x' , valueX ) . attr ( 'width' , xBar . rangeBand ( ) ) ; hoverBar . enter ( ) . append ( 'rect' ) . attr ( 'x' , valueX ) . attr ( 'y' , 0 ) . attr ( 'height' , parent . height ) . attr ( 'width' , xBar . rangeBand ( ) ) . classed ( 'highlightbar clickable' , true ) ; hoverBar . exit ( ) . remove ( ) ; }
Render a "highlight bar" over a set of bars.

@param {array} dataArray An array of data elements for which to render highlight bars over.
Pass an empty array to remove all bars.
Render a highlight bar over a set of bars .