html`<div id="exemple3"></div>`
{
// Définition des paramètres du graphique
var largeur = 600, hauteur = 200, marge_gauche = 200;
// Définition des données
var donnees = [
{ type: "Entire home/apt", count: 3000 },
{ type: "Private room", count: 1000 },
{ type: "Shared room", count: 500 }
];
// Définition des 3 échelles
// - X : [0, sum(count)] -> [marge_gauche, largeur]
// - Y : [type] -> [0, largeur]
// - M : [type] -> couleurs choisies
var echelleX = d3.scaleLinear()
.domain([0, d3.sum(donnees, d => d.count)])
.range([0, largeur - marge_gauche]),
echelleY = d3.scaleBand()
.domain(d3.map(donnees, d => d.type))
.range([0, hauteur]),
echelleM = d3.scaleOrdinal(["slateblue", "indianred", "olive"])
.domain(echelleY.domain());
// Sélection de la div cible, vidage du contenu (utile si plusieurs exécutions du code et ajout du SVG
var svg = d3.select("#exemple3").html("").append("svg")
.attr("width", largeur)
.attr("height", hauteur)
.style("border", "solid 1px black");
// Ajout des barres
svg.selectAll("rect")
.data(donnees)
.enter()
.append("rect")
.attr("x", marge_gauche)
.attr("y", d => echelleY(d.type))
.attr("width", d => echelleX(d.count))
.attr("height", echelleY.bandwidth())
.style("fill", d => echelleM(d.type));
// Ajout des modalités pour la légende
svg.selectAll("text")
.data(donnees)
.enter()
.append("text")
.attr("x", marge_gauche)
.attr("y", d => echelleY(d.type) + echelleY.bandwidth() / 2)
.style("text-anchor", "end")
.attr("dx", -10)
.html(d => d.type);
}
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