Basic starter code for many simple D3 charts, v4

A basic scatterplot that loads data, scales and axes and updates domains based on extrema. Uses Mike Bostock's margin conventions and the data for Anscombe's Quartet.

forked from kpq's block: Basic starter code for many simple D3 charts

<!DOCTYPE html>
<meta charset="utf-8">

body {
    font-family: arial, sans;
    font-size: 11px;
  }
  
  svg {
    border: 1px solid #f0f;
  }

.axis line,
  .axis path {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
  }

</style>

<body>

</body>

var width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

var xScale = d3.scaleLinear()
    .range([0,width]);

var yScale = d3.scaleLinear()
    .range([height,0]);

var xAxis = d3.axisBottom()
    .scale(xScale);

var yAxis = d3.axisRight()
    .scale(yScale);

d3.tsv("quartet.tsv", ready);

function ready(error, data) {
  if (error) return console.warn(error);

data.forEach(function(d) {
    d.xPos = +d.xPos;
    d.yPos = +d.yPos;
  });

//update domains based on extrema, which has pluses and minuses
  xScale.domain(d3.extent(data, function(d) { return d.xPos; }));
  yScale.domain(d3.extent(data, function(d) { return d.yPos; }));

svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

svg.append("g")
      .attr("class", "y axis")
      .attr("transform", "translate(" + width + ",0)")
      .call(yAxis);

var circleGroup = svg.selectAll(".circle-group")
      .data(data).enter().append("g")
      .attr("class", "circle-group")
      .attr("transform", function(d) { return "translate(" + xScale(d.xPos) + "," + yScale(d.yPos) + ")"; });

circleGroup.append("circle")
      .attr("r", 5);

circleGroup.append("text")
      .text(function(d) { return d.xPos + "," + d.yPos; })
      .attr("dx", 5)
      .attr("dy", -5);
}

</script>

https://d3js.org/d3.v4.min.js