Published
Edited
Apr 13, 2021
2 forks
1 star
chart = {
const panAndZoom = vl.selectInterval("grid");
// Departamentos (States)
const deps = vl
.markGeoshape({ filled: false, stroke: "#333", strokeWidth: 0.2 })
.data(vl.topojson(mapData).feature("MGN_AMN_DPTOS"));
// Cities
const muns = vl
.markGeoshape({ filled: false, stroke: "#ccc", strokeWidth: 0.2 })
.data(vl.topojson(mapData).feature("MGN_AMN_MPIOS"));
const dots = vl
.markPoint({ tooltip: true, shape: "wedge", filled: true, opacity: 0.9 })
// .select(panAndZoom)
.encode(
vl.latitude().fieldQ("properties.LATITUD").title("Lat"),
vl.longitude().fieldQ("properties.LONGITUD").title("Long"),
vl.detail().fieldN("properties.MPIO_CNMBR").title("City"),
vl.size()
.fieldQ("properties.STP27_PERS")
.title("Población")
.scale({ range: [0, 20000] })
.legend({ format: ".2s" }),
// vl.color().fieldN("properties.DPTO_CCDGO").scale({scheme: "spectral"}) // Colors by Deps?
)
.data(mapData.objects.MGN_AMN_MPIOS.geometries);
return vl
.layer(muns, deps, dots)
.project(
vl.projection("azimuthalEqualArea").rotate([74 + 30 / 60, -38 - 50 / 60]) // Colombia's Lat/Long
)
.width(width * .7)
.height(height)
.render();
}
import { vl } from "@vega/vega-lite-api"
{
const svg = d3.create("svg").attr("viewBox", [0, 0, width, height]);
svg
.selectAll(".mun")
.data(featuresDeps.features)
.join("path")
.attr("class", "mun")
.attr("stroke", "#333")
.attr("fill", "none")
.attr("stroke-width", 0.3)
.attr("d", path);
svg
.selectAll(".dep")
.data(featuresMuns.features)
.join("path")
.attr("class", "dep")
.attr("stroke", "#ccc")
.attr("stroke-width", 0.2)
.attr("fill", "none")
.attr("d", path);
// svg
// .selectAll(".spike")
// .data(featuresDeps.features)
// .join("circle")
// .attr("transform", d => `translate(${projection(d3.geoCentroid(d))})`)
// .attr("r", d => h(d.properties[spikeBy]));
svg
.selectAll(".spike")
.data(featuresMuns.features)
.join("path")
.attr("stroke", "steelblue")
.attr("stroke-width", 1)
.attr("fill", "#ccc")
.attr("transform", d => `translate(${projection(d3.geoCentroid(d))})`)
.attr("d", d => spike(h(d.properties[spikeBy])));
return svg.node();
}
spike = (dh, mx = 5) => {
return `M ${-mx / 2},0 L0,${-dh} L ${mx / 2},0`;
}
spikeBy = "STP27_PERS"
h = d3
.scaleLinear()
.domain([0, d3.max(featuresMuns.features, d => d.properties[spikeBy])])
.range([0, 250])
h.domain()
projection(d3.geoCentroid(featuresDeps.features[0]))
path = d3.geoPath().projection(projection)
projection = d3
.geoAzimuthalEqualArea()
.rotate([74 + 30 / 60, -38 - 50 / 60])
.fitExtent(
[[margin.left, margin.top], [width - margin.right, height - margin.bottom]],
featuresDeps
)
margin = ({ left: 20, right: 20, top: 20, bottom: 20 })
featuresDeps = topojson.feature(mapData, mapData.objects.MGN_AMN_DPTOS)
featuresMuns = {
const featuresMuns = topojson.feature(mapData, mapData.objects.MGN_AMN_MPIOS);
featuresMuns.features = featuresMuns.features.sort(
(a, b) => a.properties[spikeBy] - b.properties[spikeBy]
);
return featuresMuns;
}
height = 500
mapData = FileAttachment(
"Colombia_departamentos_municipios_poblacion-topo@1.json"
).json()
d3 = require("d3@6")
topojson = require("topojson@3")
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