mbostock · March 1, 2019 05:48
diff --git a/.block b/.block
 license: gpl-3.0
 height: 960
 redirect: https://observablehq.com/@mbostock/diamonds
diff --git a/diamonds.tsv b/diamonds.tsv
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <meta charset="utf-8">
 <style>

 canvas,
 svg {
  position: absolute;
 }

 .grid .tick line {
  stroke: #fff;
 }

 .grid--x .domain {
  fill: #e7e7e7;
  stroke: none;
 }

 .grid--y .domain,
 .axis .domain {
  display: none;
 }

 </style>
 <svg width="960" height="960"></svg>
 <canvas width="960" height="960"></canvas>
 <script src="//d3js.org/d3.v4.0.0-alpha.49.min.js"></script>
 <script>

 var canvas = d3.select("canvas").node(),
    context = canvas.getContext("2d");

 var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = canvas.width - margin.left - margin.right,
    height = canvas.height - margin.top - margin.bottom;

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

 var x = d3.scaleLog()
    .rangeRound([0, width - 2]);

 var y = d3.scaleLog()
    .rangeRound([height - 2, 0]);

 context.translate(margin.left, margin.top);
 context.globalCompositeOperation = "multiply";
 context.fillStyle = "rgba(60,180,240,0.6)";

 d3.tsv("diamonds.tsv", type, function(error, diamonds) {
  if (error) throw error;

  x.domain(d3.extent(diamonds, function(d) { return d.carat; }));
  y.domain(d3.extent(diamonds, function(d) { return d.price; }));

  svg.append("g")
      .attr("class", "grid grid--x")
      .call(d3.axisLeft(y)
          .tickSize(-width)
          .tickFormat(""));

  svg.append("g")
      .attr("class", "grid grid--y")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x)
          .tickSize(-height)
          .tickFormat(""));

  svg.append("g")
      .attr("class", "axis axis--y")
      .call(d3.axisLeft(y)
          .ticks(20, ".1s"))
    .append("text")
      .attr("x", 10)
      .attr("y", 10)
      .attr("dy", ".71em")
      .attr("fill", "#000")
      .attr("font-weight", "bold")
      .attr("text-anchor", "start")
      .text("Price (US$)");

  svg.append("g")
      .attr("class", "axis axis--x")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x)
          .ticks(20, ".1f"))
    .append("text")
      .attr("x", width - 10)
      .attr("y", -10)
      .attr("dy", "-.35em")
      .attr("fill", "#000")
      .attr("font-weight", "bold")
      .attr("text-anchor", "end")
      .text("Mass (carats)");

  d3.shuffle(diamonds);
  var t = d3.timer(function() {
    for (var i = 0, n = 500, d; i < n; ++i) {
      if (!(d = diamonds.pop())) return t.stop();
      context.fillRect(x(d.carat), y(d.price), Math.max(2, x(d.carat + 0.01) - x(d.carat)), 2);
    }
  });
 });

 function type(d) {
  d.carat = +d.carat;
  d.price = +d.price;
  return d;
 }

 </script>
diff --git a/thumbnail.png b/thumbnail.png
	license: gpl-3.0
	height: 960
	redirect: https://observablehq.com/@mbostock/diamonds
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	canvas,
	svg {
	position: absolute;
	}

	.grid .tick line {
	stroke: #fff;
	}

	.grid--x .domain {
	fill: #e7e7e7;
	stroke: none;
	}

	.grid--y .domain,
	.axis .domain {
	display: none;
	}

	</style>
	<svg width="960" height="960"></svg>
	<canvas width="960" height="960"></canvas>
	<script src="//d3js.org/d3.v4.0.0-alpha.49.min.js"></script>
	<script>

	var canvas = d3.select("canvas").node(),
	context = canvas.getContext("2d");

	var margin = {top: 20, right: 20, bottom: 30, left: 40},
	width = canvas.width - margin.left - margin.right,
	height = canvas.height - margin.top - margin.bottom;

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

	var x = d3.scaleLog()
	.rangeRound([0, width - 2]);

	var y = d3.scaleLog()
	.rangeRound([height - 2, 0]);

	context.translate(margin.left, margin.top);
	context.globalCompositeOperation = "multiply";
	context.fillStyle = "rgba(60,180,240,0.6)";

	d3.tsv("diamonds.tsv", type, function(error, diamonds) {
	if (error) throw error;

	x.domain(d3.extent(diamonds, function(d) { return d.carat; }));
	y.domain(d3.extent(diamonds, function(d) { return d.price; }));

	svg.append("g")
	.attr("class", "grid grid--x")
	.call(d3.axisLeft(y)
	.tickSize(-width)
	.tickFormat(""));

	svg.append("g")
	.attr("class", "grid grid--y")
	.attr("transform", "translate(0," + height + ")")
	.call(d3.axisBottom(x)
	.tickSize(-height)
	.tickFormat(""));

	svg.append("g")
	.attr("class", "axis axis--y")
	.call(d3.axisLeft(y)
	.ticks(20, ".1s"))
	.append("text")
	.attr("x", 10)
	.attr("y", 10)
	.attr("dy", ".71em")
	.attr("fill", "#000")
	.attr("font-weight", "bold")
	.attr("text-anchor", "start")
	.text("Price (US$)");

	svg.append("g")
	.attr("class", "axis axis--x")
	.attr("transform", "translate(0," + height + ")")
	.call(d3.axisBottom(x)
	.ticks(20, ".1f"))
	.append("text")
	.attr("x", width - 10)
	.attr("y", -10)
	.attr("dy", "-.35em")
	.attr("fill", "#000")
	.attr("font-weight", "bold")
	.attr("text-anchor", "end")
	.text("Mass (carats)");

	d3.shuffle(diamonds);
	var t = d3.timer(function() {
	for (var i = 0, n = 500, d; i < n; ++i) {
	if (!(d = diamonds.pop())) return t.stop();
	context.fillRect(x(d.carat), y(d.price), Math.max(2, x(d.carat + 0.01) - x(d.carat)), 2);
	}
	});
	});

	function type(d) {
	d.carat = +d.carat;
	d.price = +d.price;
	return d;
	}

	</script>