md`# vertical bar chart`
d3= require("d3@6")
data = Object.assign(d3.csvParse(await FileAttachment("Genre vs voters@2.csv").text(), ({Name, Value}) => ({Name: Name, Value: +Value})).sort((a, b) => d3.descending(a.Value, b.Value)))
chart = {
var margin = ({top: 10, right: 0, bottom: 50, left: 50})
var color = "orange"
var height = 300
var width = 583
var x = d3.scaleBand()
.domain(d3.range(data.length))
.range([margin.left, width - margin.right])
.padding(0.1)
var y = d3.scaleLinear()
.domain([0, d3.max(data, d => d.Value)]).nice()
.range([height - margin.bottom, margin.top])
var xAxis = g => g
.attr("transform", `translate(0,${height - margin.bottom})`)
.call(d3.axisBottom(x).tickFormat(i => data[i].Name).tickSizeOuter(0))
var yAxis = g => g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y).ticks(null, data.format))
.call(g => g.select(".domain").remove())
.call(g => g.append("text")
.attr("x", -margin.left)
.attr("y", 10)
.attr("fill", "currentColor")
.attr("text-anchor", "start")
.text(data.y))
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height]);
svg.append("g")
.attr("fill", color)
.selectAll("rect")
.data(data)
.join("rect")
.attr("x", (d, i) => x(i))
.attr("y", d => y(d.Value))
.attr("height", d => y(0) - y(d.Value))
.attr("width", x.bandwidth());
svg.append("text")
.attr("text-anchor", "end")
.attr("x", width/2+120)
.attr("y", margin.top+10)
.text("Genre vs average num of votes");
svg.append("text")
.attr("text-anchor", "end")
.attr("x", width/2)
.attr("y", height )
.text("Genre");
svg.append("text")
.attr("text-anchor", "end")
.attr("transform", "rotate(-90)")
.attr("y", margin.left-40)
.attr("x", margin.top-50)
.text("Average num of votes");
svg.append("g")
.call(yAxis);
svg.append("g")
.call(xAxis);
return svg.node();
}
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
