container = html `<div style="height:600px">
<div id="tooltip"></div>
<div id="legend">
${legendEntries.map(({color, value}) => html`<div class="legend-entry">
<div class="swatch" style="background:${color};"></div>
<div class="label">${value}</div>
</div>`)}
</div>
</div>`
legendEntries = [
{color: 'red', value: '0-10'},
{color: 'yellow', value: '10-100'}
]
tooltip = container.querySelector('#tooltip')
deckgl = {
return new deck.DeckGL({
container,
map: mapboxgl,
mapboxAccessToken: '',
mapStyle: 'https://free.tilehosting.com/styles/positron/style.json?key=U0iNgiZKlYdwvgs9UPm1',
latitude: 49.254,
longitude: -123.13,
zoom: 11,
maxZoom: 16,
pitch: 45
});
}
{
const geojsonLayer = new deck.GeoJsonLayer({
data: 'https://raw.githubusercontent.com/uber-common/deck.gl-data/master/examples/geojson/vancouver-blocks.json',
opacity: 0.8,
stroked: false,
filled: true,
extruded: true,
wireframe: true,
fp64: true,
lightSettings,
getElevation: f => Math.sqrt(f.properties.valuePerSqm) * 10,
getFillColor: f => colorScale(f.properties.growth),
getLineColor: f => [255, 255, 255],
pickable: true,
onHover: onHover
});
deckgl.setProps({layers: [geojsonLayer]});
return geojsonLayer;
}
onHover = {
return function(info) {
const {x, y, object} = info;
if (object) {
tooltip.style.top = `${y}px`;
tooltip.style.left = `${x}px`;
tooltip.innerHTML = `
<div><b>Average Property Value </b></div>
<div><div>${object.properties.valuePerSqm} / m<sup>2</sup></div></div>
<div><b>Growth</b></div>
<div>${Math.round(object.properties.growth * 100)}%</div>
`;
} else {
tooltip.innerHTML = '';
}
};
}
html `<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.css' rel='stylesheet' />
<style>
#tooltip:empty {
display: none;
}
#tooltip {
font-family: Helvetica, Arial, sans-serif;
font-size: 11px;
position: absolute;
padding: 4px;
margin: 8px;
background: rgba(0, 0, 0, 0.8);
color: #fff;
max-width: 300px;
font-size: 10px;
z-index: 9;
pointer-events: none;
}
#legend {
position:absolute;
right:8px;
bottom:8px;
background:white;
padding:4px;
border:1px solid red;
z-index:500;
}
#legend .legend-entry {
display:flex;
}
#legend .swatch{
width:1rem;
height:1rem;
margin-right:0.5rem;
}
</style>
(Stylesheets)`
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.