Building and Using Tools to See.
UVA Architecture + Data Science. IT Director. Instructor.
Maps (Geographic)base codeMultiple LayersAdd Zoom and PanProjectionsChoroplethDotMapCentroids, Bounds, AbstractionsSparklines at centroidsUS States Grid MapWorld Grid MapLeafletMapBox GLMapBox GL - dot locationsObservable Plot - Base World MapObservable Plot - Add GIS LayersObservable Plot - ProjectionsObservable Plot - ChoroplethObservable Plot - Dot mapUS map with Powerplant Pack CirclesRing plot on Map - Trust Gap?Fixed location Network GraphConnecting multiple visuals in one spacegeoContainsPolygons by [lon,lat] sets on Map (geo)
MapBox GL - layers
<div style="height:600px;"></div>
map = container.value = new mapboxgl.Map({
container,
center: [-78.476678, 38.029306], // Charlottesville downtown
zoom: 12,
style: "mapbox://styles/mapbox/streets-v11",
//scrollZoom: false
});
map.on('load', () => {
map.addSource('neighborhoods', {
'type': 'geojson',
'data': 'https://opendata.arcgis.com/datasets/c371ad0b81024822bad1147ff6bb24c4_51.geojson'
});
map.addLayer({
'id': 'neighborhoods',
'type': 'line',
'source': 'neighborhoods',
'layout': {},
'paint': {
'line-color': '#0000ff',
'line-width': 2
}
});
})
uscounties = FileAttachment("gz_2010_us_counties_00_20m.json").json()
map.on('load', () => {
map.addSource('uscounties', {
'type': 'geojson',
'data': uscounties
});
map.addLayer({
'id': 'uscounties',
'type': 'line',
'source': 'uscounties',
'layout': {},
'paint': {
'line-color': '#bbbbbb',
'line-width': 2
}
});
})
mapboxgl = {
const gl = await require("mapbox-gl@2.2.0");
if (!gl.accessToken) {
// https://www.mapbox.com/help/how-access-tokens-work/
// you will need to get your own access token to put here in place of mine.
gl.accessToken = "pk.eyJ1IjoiZW1maWVsZCIsImEiOiJja25lb3hwbWEwMjRwMnBud29zcXQ4MG9nIn0.Ou1f9fNGHHcNiquxzXdz_g";
const href = await require.resolve("mapbox-gl@2.2.0/dist/mapbox-gl.css");
document.head.appendChild(html`<link href=${href} rel=stylesheet>`);
}
return gl;
}
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.