Professor Big Data Science at Ghent University.
Published
Edited
Jun 16, 2020
2 forks
6 stars
belgium = (await fetch("https://raw.githubusercontent.com/bmesuere/belgium-topojson/master/belgium.json")).json()
vl.markGeoshape({stroke: 'gray', fill: "white", strokeWidth: 1})
.data(vl.topojson(belgium).feature('municipalities'))
.width(850).height(600)
.config({view: {stroke: null}})
.render();
{
const muni = vl.markGeoshape({stroke: 'gray', fill: "white", strokeWidth: 1})
.data(vl.topojson(belgium).feature('municipalities'));
const prov = vl.markGeoshape({stroke: 'black', fillOpacity: 0, strokeWidth: 1})
.data(vl.topojson(belgium).feature('provinces'));
return vl.layer(muni, prov)
.width(850).height(600)
.config({view: {stroke: null}})
.render();
}
vl.markGeoshape({stroke: 'white', strokeWidth: 1})
.data(vl.topojson(belgium).feature('municipalities'))
.encode(
vl.color()
.fieldQ('properties.population')
.scale({type: 'sqrt'})
.legend({title: 'Population'}),
vl.tooltip([
{field: "properties.name_nl", title: 'City'},
{field: "properties.population", title: 'Population'}
])
)
.width(850).height(600)
.config({view: {stroke: null}})
.render();
caseData = (await fetch("https://epistat.sciensano.be/Data/COVID19BE_CASES_MUNI_CUM.json")).json()
vl.markGeoshape({stroke: 'white', strokeWidth: 1})
.data(vl.topojson(belgium).feature('municipalities'))
.transform(
vl.lookup('properties.nis').default(0).from(vl.data(caseData).key('NIS5').fields('CASES')),
vl.calculate('datum.CASES == "<5" ? 0 : datum.CASES').as('Cases'),
vl.calculate('1000 * datum["Cases"] / datum.properties.population').as('cases_per_1000'),
)
.encode(
vl.color().fieldQ('cases_per_1000').legend({title: 'Cases per 1000 inhabitants', orient: 'top'}),
vl.tooltip([
{field: "properties.name_nl", title: 'City'},
{field: "CASES", title: 'cases'}
])
)
.width(850).height(600)
.config({view: {stroke: null}})
.render();
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.