Oklahoma Counties

Bug in the makefile. Will update when fixed. Can use us-atlas to produce the same counties.json file.

UPDATED with working makefile. Fork of us-atlas example.

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

.county {
  fill: #eee;
}

.county:hover {
  fill: orange;
}

.county-border {
  fill: none;
  stroke: #777;
}

.state-border {
  fill: none;
  stroke: #333;
}

svg {
  display: block;
  margin: auto;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 500;

var path = d3.geo.path()
    .projection(null);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

d3.json("ok-counties.json", function(error, ok) {
  if (error) throw error;

var counties = topojson.feature(ok, ok.objects.counties);

svg.append("g")
      .attr("class", "counties")
    .selectAll("path")
      .data(counties.features)
    .enter().append("path")
      .attr('class', 'county')
      .attr("d", path);

svg.append("path")
      .datum(topojson.mesh(ok, ok.objects.counties, function(a, b) { return a !== b; }))
      .attr("class", "county-border")
      .attr("d", path);

svg.append("path")
      .datum(topojson.mesh(ok, ok.objects.counties, function(a, b) { return a === b; }))
      .attr("class", "state-border")
      .attr("d", path);
});

</script>

https://d3js.org/d3.v3.min.js

https://d3js.org/topojson.v1.min.js