init = () => {
CTR.cv.remove();
const minDist = d3.min(data.map( d => calculateDistance(d,[d.x,0])));
const dots = CTR.s;
dots.append("g")
.attr("class","circon")
.attr("opacity", 1)
.selectAll("circle")
.data(data)
.enter().append("circle")
.attr("class", "small-circle")
.attr("r", config.radius)
.attr("cx", (d, i) => x(d.x))
.attr("cy", (d, i) => height-margin.bottom-config.radius)
.attr("fill", d => d.color)
.attr("opacity", "1")
.transition()
.duration(700)
.delay((d,i) => (calculateDistance(d,[d.x,0])-minDist)*3+250)
.ease(t => d3.easeElasticOut(t,0.8,0.3))
.attr("cx", d => x(d.x))
.attr("cy", d => y(d.y));
}