{
const map = vl.markGeoshape({fill: lightgray, stroke: 'white', strokeWidth: 0.5})
.data(vl.json(nycGeo).property('features'));
const points = vl.markCircle()
.data(numRequests)
.encode(
vl.latitude().fieldQ('lat'),
vl.longitude().fieldQ('lon'),
vl.size().fieldQ('count')
)
return vl.layer(map, points)
.project(vl.projection('albers'))
.width(600)
.height(600)
.render()
}