Counties of the United Kingdom

forked from jasondavies's block: Counties of the United Kingdom

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
    <link type="text/css" rel="stylesheet" href="style.css"/>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/d3@2.10.3/d3.v2.js"></script>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/d3@12.10.3/d3.csv.js"></script>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/d3@12.10.3/d3.layout.js"></script>
    <style type="text/css">

body { text-align: center; }
p.source { font-style: italic; }
a { color: blue; }

svg {
  display: block;
  margin: auto;
}

text {
  font-size: 11px;
}

rect {
  fill: none;
}

</style>
  </head>
  <body>
    <h1>Counties of the United Kingdom</h1>
    <p>A demonstration of using CSV data for treemaps, at the request of <a href="https://github.com/blackbird25">blackbird25</a>.  Click to zoom!
    <div id="body"></div>
    <p>Treemap zooming based on <a href="https://mbostock.github.com/d3/talk/20111018/#23">a slide</a> by <a href="https://bost.ocks.org/mike">Mike Bostock</a>.
    <p class="source">Data source: <a href="https://blog.acmultimedia.co.uk/2007/09/list-of-uk-counties-in-sql-csv-format/">acmultimedia</a>.

var w = 960 - 80,
    h = 500 - 180,
    x = d3.scale.linear().range([0, w]),
    y = d3.scale.linear().range([0, h]),
    color = d3.scale.category20c(),
    root,
    node;

var treemap = d3.layout.treemap()
    .round(false)
    .size([w, h])
    .sticky(true)
    .children(function(d) { return d.values; })
    .value(function(d) { return 1; });

var svg = d3.select("#body").append("svg:svg")
    .attr("width", w)
    .attr("height", h)
  .append("svg:g")
    .attr("transform", "translate(.5,.5)");

d3.csv("uk-counties.csv", function(data) {
  node = root = {values: d3.nest()
      .key(function(d) { return d.Country; })
      .rollup(function(d) {
        return d.map(function(d) {
          return {key: d.County};
        });
      })
      .entries(data)};

var nodes = treemap.nodes(root)
      .filter(function(d) { return !d.values; });

var cell = svg.selectAll("g")
      .data(nodes)
    .enter().append("svg:g")
      .attr("class", "cell")
      .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
      .on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });

cell.append("svg:rect")
      .attr("width", function(d) { return d.dx - 1; })
      .attr("height", function(d) { return d.dy - 1; })
      .style("fill", function(d) { return color(d.parent.key); });

cell.append("svg:text")
      .attr("x", function(d) { return d.dx / 2; })
      .attr("y", function(d) { return d.dy / 2; })
      .attr("dy", ".35em")
      .attr("text-anchor", "middle")
      .text(function(d) { return d.key; })
      .style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });

d3.select(window).on("click", function() { zoom(root); });

});

function zoom(d) {
  var kx = w / d.dx, ky = h / d.dy;
  x.domain([d.x, d.x + d.dx]);
  y.domain([d.y, d.y + d.dy]);

var t = svg.selectAll("g.cell").transition()
      .duration(d3.event.altKey ? 7500 : 750)
      .attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; });

t.select("rect")
      .attr("width", function(d) { return kx * d.dx - 1; })
      .attr("height", function(d) { return ky * d.dy - 1; })

t.select("text")
      .attr("x", function(d) { return kx * d.dx / 2; })
      .attr("y", function(d) { return ky * d.dy / 2; })
      .style("opacity", function(d) { return kx * d.dx > d.w ? 1 : 0; });

node = d;
  d3.event.stopPropagation();
}

</script>
  </body>
</html>

Modified http://mbostock.github.com/d3/d3.js to a secure url

Modified http://mbostock.github.com/d3/d3.csv.js to a secure url

Modified http://mbostock.github.com/d3/d3.layout.js to a secure url

https://mbostock.github.com/d3/d3.js

https://mbostock.github.com/d3/d3.csv.js

https://mbostock.github.com/d3/d3.layout.js