geojson = FileAttachment('bulgaria.geojson').json()
drawBubbles(data, geojson)
drawBubbles = (data, geojson) => {
// extract centroids from geojson shapes
let dataP = [];
var pos = {}, max = 0;
data.forEach(function(d) {
var geo = geojson.features.find(f => f.properties.code === d.code);
var points = geo.geometry.coordinates[0];
if(Array.isArray(points[0][0]))
points = geo.geometry.coordinates.reduce(function(p, v) {
return p.concat(v);
}, []);
var p = [d3.sum(points, p => +p[1])/points.length, d3.sum(points, p => +p[0])/points.length];
pos[d.code] = p;
d.sum = 0;
for(var p in d)
if (p && p!="code" && p!="sum") {
dataP.push({'code':d.code,'type':p,'value':+d[p]});
d.sum+=+d[p];
}
if(d.sum > max)
max = d.sum;
});
var xf = crossfilter(dataP);
var groupname = "Bubbles";
var facilities = xf.dimension(function(d) { return d.code; });
let facilitiesGroup = facilities.group().reduceSum(function(d) { return d.value;});
var choro = dc_leaflet.bubbleChart("#demo4 .map",groupname)
.dimension(facilities)
.group(facilitiesGroup)
.width(600)
.height(400)
.center([42.69,25.42])
.renderPopup(false)
.colors(colorbrewer.Reds[7])
.colorDomain([
d3.min(facilitiesGroup.all(), dc.pluck('value')),
d3.mean(facilitiesGroup.all(), dc.pluck('value'))
])
.colorAccessor(function(d,i) {
return d.value;
})
.popup(d => d.key)
.zoom(7)
.locationAccessor(d => pos[d.key])
.r(d3.scaleLog().domain([1, max]).range([0,20]))
.legend(dc_leaflet.legend().position('bottomright').legendTitle("Bubble"));
var types = xf.dimension(function(d) { return d.type; });
var typesGroup = types.group().reduceSum(function(d) { return d.value;});
var pie = dc.pieChart("#demo4 .pie",groupname)
.dimension(types)
.group(typesGroup)
.width(200)
.height(200)
.ordering(function (p) {
return +p.key.substr(6);
})
.renderLabel(false)
.renderTitle(true)
.title(function(d) {
var age = d.key.substr(6);
if (age.indexOf("p")==-1)
age="Between "+(+age-4)+"-"+age;
else
age="Over "+age.substr(0,2);
return age+" : "+d.value;
});
dc.renderAll(groupname);
return {choro: choro, pie: pie};
}
dc = require('dc@4')
crossfilter = require("crossfilter2")
d3 = require("d3")
L = require('leaflet')
dc_leaflet = require('dc.leaflet@0.5')
colorbrewer = require('colorbrewer')
html` <link type="text/css" href="https://dc-js.github.io/dc.leaflet.js/css/leaflet.css" rel="stylesheet"/>
<link type="text/css" href="https://dc-js.github.io/dc.leaflet.js/css/MarkerCluster.Default.css" rel="stylesheet"/>
<link type="text/css" href="https://dc-js.github.io/dc.leaflet.js/css/MarkerCluster.css" rel="stylesheet"/>
<link type="text/css" href="https://dc-js.github.io/dc.js/css/dc.css" rel="stylesheet"/>
<link type="text/css" href="https://dc-js.github.io/dc.leaflet.js/css/leaflet-legend.css" rel="stylesheet"/>
`
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