D3 Examples - labels from csv with d3.annotation()

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <style>
     svg { font-family: Courier; }
    .annotation-note-title, text.title { font-weight: bold; }
    text.title { font-size: 1.2em; }
    </style>
</head>
<body>
    <svg width=960 height=500>
      <text class="title" x=40 y=50>d3.annotation()</text>
      <text x=40 y=80>Getting my head around data-driven annotations</text>
    </svg>
<script src="https://d3js.org/d3.v4.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3-annotation/2.1.0/d3-annotation.min.js"></script>
<script>
​
// Set up some scales
const y = d3.scaleLinear()
        .range([0, 500])
        .domain([0, 10]),
      x = d3.scaleLinear()
        .range([0, 960])
        .domain([0, 10]),
      color = d3.scaleOrdinal(d3.schemeCategory10)
​
// Load our external data
d3.csv("lyrics.csv", function(data) {
  
  // Map the lyrics data to an array of objects detailing 
  // each annotation's text, position & style.
  // Note use of x, y, color scales. +d converts strings to numerics.
  const annotations = data.map(function(d, i){
    return {
      note: {
        title: d.title,
        label: d.lyric,
        wrap: 214, // text wrap threshold
        align: 'left', //cf. right, middle, dynamic
      },
      connector: {end: 'dot'}, // cf. arrow
      x: x(+d.freshness),
      y: y(+d.princeliness),
      dy: 90, // vertical offset
      dx: 100,// horizontal offset
      color: color(i) // send index to color scale
    }
  })
​
  // Create a d3.annotation() 
  // & pass in our annotation properties array.
    // Susie's examples use accessors & accessorsInverse 
  // here to establish SVG x,y positions.
  // I set these earlier when mapping to annotation properties array
  const makeAnnotations = d3.annotation()
    .type(d3.annotationCalloutElbow) //cf. annotationLabel etc.
    .annotations(annotations)
​
  // Append the annotations to the SVG 
  d3.select("svg")
    .append("g")
    .attr("class", "annotation-group")
    .call(makeAnnotations)
})
  
</script>
</body>
</html>
​
    