function filterByPosition(array, position) {
	return helpers$1.where(array, function(v) {
		return v.pos === position;
	});
}
y mode returns the elements that hit-test at the current y coordinate
@function Chart.Interaction.modes.y
@param {Chart} chart - the chart we are returning items from
@param {Event} e - the event we are find things at
@param {IInteractionOptions} options - options to use
@return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned