Vega-Lite London Tube Lines / Vega

Data Visualization Languages & Tools

Published

Edited

Mar 25, 2021

2 forks

13 stars

{

const boroughs = vl.markGeoshape({fill: '#eee', stroke: 'white', strokeWidth: 2})

.data(vl.topojson('data/londonBoroughs.json').feature('boroughs'));

const centroids = vl.markText({size: 8, opacity: 0.6})

.data('data/londonCentroids.json')

.transform(

vl.calculate('split(datum.name, " ")[0]').as('label')

)

.encode(

vl.longitude().fieldQ('cx'),

vl.latitude().fieldQ('cy'),

vl.text().fieldN('label'),

);

const lines = vl.markGeoshape({filled: false, strokeWidth: 2})

.data(vl.topojson('data/londonTubeLines.json').feature('line'))

.encode(

vl.color().fieldN('id').title(null)

.legend({symbolType: 'stroke', orient: 'bottom-right', offset: 2})

.scale({domain: stations, range: colors})

);

return vl.layer(boroughs, centroids, lines)

.width(700)

.height(500)

.config({view: {stroke: null}})

.render();

}

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