Plot.plot({
marginBottom: 100,
x: {label: null, tickRotate: 90},
y: {type: "point", label: "↑ gold", labelAnchor: "top", reverse: true},
r: {range: [0, 12]},
marks: [
Plot.dot(olympians, Plot.group({r: "count"}, {x: "sport", y: "gold", stroke: "sex"}))
]
})