//Create SVG elementvar plot = d3.select(".scatter-plot")
.append("svg")
.attr("width", w)
.attr("height", h);
//Create dashed circlesfor (i = 125; i >= 0; i-=25) {
plot.append("circle")
.attr("cx", w/2) .attr("cy", h/2) .attr("r", i) .style("stroke", "black") .style("stroke-dasharray", "5,5") .style("stroke-width", "2") .style("fill", "white");}