pointlayer =
new deck.ScatterplotLayer({
id: `pointlayer`,
data: airport_loc.objects(),
opacity: 1,
filled: true,
autoHighlight:true,
pickable: true,
radiusScale: 3,
radiusMinPixels: 1,
radiusMaxPixels: 100,
getPosition: d => [d.origin_lon, d.origin_lat],
getRadius: d => Math.sqrt(d.flts_from),
getFillColor: d => [128, 128, 0],
getLineColor: d => [0, 0, 0]
});