Wisconsin's Lakes / Andrew Mollica

Published

Edited

Nov 8, 2019

5 stars

md`# Wisconsin's Lakes`

chart = {

const root = pack(data);

const svg = d3.create("svg")

.attr("viewBox", [0, 0, width, height]);

const node = svg.selectAll("g")

.data(d3.nest().key(d => d.height).entries(root.descendants()))

.join("g")

.selectAll("g")

.data(d => d.values)

.join("g")

.attr("transform", d => `translate(${d.x + 1},${d.y + 1})`);

const leaf = node.filter(d => !d.children);

leaf.append("circle")

.attr("r", d => d.r)

.attr('stroke', '#ccc')

.attr('stroke-opacity', 0)

.attr('fill', '#ccc')

.attr('fill-opacity', 0);

leaf.append('path')

.attr('d', (object) => {

const d = object.data;

const r = object.r;

const w = r * 2;

const extent = [[-w/2, -w/2], [w/2, w/2]];

const projection = d3.geoIdentity()

.reflectY(true)

.fitExtent(extent, d.feature);

const path = d3.geoPath()

.projection(projection);

return path(d.feature);

})

.attr('fill', 'steelblue');

return svg.node();

}

hierarchyData = d3.hierarchy(data)

.sum(d => d.area);

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