Plot.plot({
width: 900,
height: 1200,
marks: [
Plot.geo(maine, {stroke: "lightgray"}),
Plot.dot(companiesGeoJSON, {
...Plot.centroid({fill: "black", stroke: "white", r: 5}),
title: d => `${d.properties.company}\n${d.properties.city}, ${d.properties.county}, ${d.properties.state}`
})
],
});