Visa requirements in Arab countries

forked from eleyine's block: Visa requirements in Arab countries

<!DOCTYPE html>
<meta charset="utf-8">
<title>Visa Requirements in Arab Countries</title>
<style>

@import url(style.css);

#circle circle {
  fill: none;
  pointer-events: all;
}

.group path {
  fill-opacity: .5;
}

path.chord {
  stroke: #000;
  stroke-width: .25px;
}

#circle:hover path.fade {
  display: none;
}

</style>

<header>
  <aside>October 5th, 2013</aside>
  <p>Modified from Mike Bostock's <a href="https://bost.ocks.org/mike/uberdata/">Uber Rides by Neighborhood</a></p>
</header>

<h1>Visa Requirements in Arab Countries</h1>

<aside>Mouseover to focus on visa requirements to and from a single country.</aside>

<p>Built with <a href="https://d3js.org/">d3.js</a>.</aside>

var width = 720,
    height = 720,
    outerRadius = Math.min(width, height) / 2 - 10,
    innerRadius = outerRadius - 24;

var formatPercent = d3.format(".1%");

var arc = d3.svg.arc()
    .innerRadius(innerRadius)
    .outerRadius(outerRadius);

var layout = d3.layout.chord()
    .padding(.04)
    .sortSubgroups(d3.descending)
    .sortChords(d3.ascending);

var path = d3.svg.chord()
    .radius(innerRadius);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g")
    .attr("id", "circle")
    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

svg.append("circle")
    .attr("r", outerRadius);

d3.csv("countries.csv", function(cities) {
  d3.json("matrix.json", function(matrix) {

// Compute the chord layout.
    layout.matrix(matrix);

// Add a group per neighborhood.
    var group = svg.selectAll(".group")
        .data(layout.groups)
      .enter().append("g")
        .attr("class", "group")
        .on("mouseover", mouseover);

// Add a mouseover title.
    // group.append("title").text(function(d, i) {
    //   return cities[i].name + ": " + formatPercent(d.value) + " of origins";
    // });

// Add the group arc.
    var groupPath = group.append("path")
        .attr("id", function(d, i) { return "group" + i; })
        .attr("d", arc)
        .style("fill", function(d, i) { return cities[i].color; });

// Add a text label.
    var groupText = group.append("text")
        .attr("x", 6)
        .attr("dy", 15);

groupText.append("textPath")
        .attr("xlink:href", function(d, i) { return "#group" + i; })
        .text(function(d, i) { return cities[i].name; });

// Remove the labels that don't fit. :(
    groupText.filter(function(d, i) { return groupPath[0][i].getTotalLength() / 2 - 16 < this.getComputedTextLength(); })
        .remove();

// Add the chords.
    var chord = svg.selectAll(".chord")
        .data(layout.chords)
      .enter().append("path")
        .attr("class", "chord")
        .style("fill", function(d) { return cities[d.source.index].color; })
        .attr("d", path);

//Add an elaborate mouseover title for each chord.
    chord.append("title").text(function(d) {
      return cities[d.source.index].name
          + " → " + cities[d.target.index].name
          + ": " + formatPercent(d.source.value)
          + "\n" + cities[d.target.index].name
          + " → " + cities[d.source.index].name
          + ": " + formatPercent(d.target.value);
    });

function mouseover(d, i) {
      chord.classed("fade", function(p) {
        return p.source.index != i
            && p.target.index != i;
      });
    }
  });
});

</script>

<footer>
  <aside>October 5th, 2013</aside>
  <p>Modified from Mike Bostock's <a href="https://bost.ocks.org/mike/uberdata/">Uber Rides by Neighborhood</a></p>
</footer>

Modified http://d3js.org/d3.v2.min.js?2.8.1 to a secure url

https://d3js.org/d3.v2.min.js?2.8.1