eSlivinski/index.html

## index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <style>
      .state {
        stroke: rgba(0,0,0,0.4);
      }

      circle {
        fill: orange;
        fill-opacity: 0.7;
        stroke-opacity: 1;
        stroke-width: 1;
        stroke: yellow;
      }
    </style>
  </head>
  <body>
  </body>
  <script src="http://d3js.org/d3.v4.js"></script>

  <script>
  var width = 960;
  var height = 500;

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

  var projection = d3.geoAlbersUsa();

  // Path is a function that tells our svg object how to convert our geojson
  // data into
  var path = d3.geoPath()
    .projection(projection);

  function randomNumber(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max);
    return Math.floor(Math.random() * (max - min + 1)) + min;
  }

  var colorScale = d3.scaleLinear()
    .domain([0, 1, 2, 3, 4, 5, 6, 7, 8])
    .range(['#ffffd9', '#edf8b1', '#c7e9b4', '#7fcdbb', '#41b6c4', '#1d91c0', '#225ea8', '#0c2c84']);

  d3.json("./us.geojson", function(err, data) {

    data.features.forEach(function(feature) {
      // Append the state's 'projected' (screen x/y) to the data object
      feature.properties.center = path.centroid(feature);
    })

    states = svg.selectAll("path")
      .data(data.features)
      .enter().append("path")
      .attr('class', 'state')
      .attr("d", path);

    circles = svg.selectAll("circle")
      .data(data.features)
      .enter().append('circle')
      .attr('cx', function(d) { return d.properties.center[0]; })
      .attr('cy', function(d) { return d.properties.center[1]; })
      .attr('r', 0);

      style();

      setInterval(style, 3000);
  });

  function style () {
    states
      .transition()
        .duration(1000)
      .attr('fill', function() { return colorScale(randomNumber(0, 8)) })
      .attr('fill-opacity', function() { return Math.random();  });

    circles
      .transition()
        .duration(1000)
      .attr('r', function(d) {
        d.properties.prev_value = d.properties.value || 0;
        d.properties.value = randomNumber(0, 15);
        return d.properties.value;
      });
  }

  </script>
</html>

## preview.png

      
    Raw
  

              preview.png
            
          
## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## us.geojson

      
Display the source blob

    
Display the rendered blob

    
    Raw
  

              us.geojson
            
          
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	<!DOCTYPE html>
	<html lang="en">
	<head>
	<!-- Required meta tags -->
	<meta charset="utf-8">
	<style>
	.state {
	stroke: rgba(0,0,0,0.4);
	}

	circle {
	fill: orange;
	fill-opacity: 0.7;
	stroke-opacity: 1;
	stroke-width: 1;
	stroke: yellow;
	}
	</style>
	</head>
	<body>
	</body>
	<script src="http://d3js.org/d3.v4.js"></script>

	<script>
	var width = 960;
	var height = 500;

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

	var projection = d3.geoAlbersUsa();

	// Path is a function that tells our svg object how to convert our geojson
	// data into
	var path = d3.geoPath()
	.projection(projection);

	function randomNumber(min, max) {
	min = Math.ceil(min);
	max = Math.floor(max);
	return Math.floor(Math.random() * (max - min + 1)) + min;
	}

	var colorScale = d3.scaleLinear()
	.domain([0, 1, 2, 3, 4, 5, 6, 7, 8])
	.range(['#ffffd9', '#edf8b1', '#c7e9b4', '#7fcdbb', '#41b6c4', '#1d91c0', '#225ea8', '#0c2c84']);

	d3.json("./us.geojson", function(err, data) {

	data.features.forEach(function(feature) {
	// Append the state's 'projected' (screen x/y) to the data object
	feature.properties.center = path.centroid(feature);
	})

	states = svg.selectAll("path")
	.data(data.features)
	.enter().append("path")
	.attr('class', 'state')
	.attr("d", path);

	circles = svg.selectAll("circle")
	.data(data.features)
	.enter().append('circle')
	.attr('cx', function(d) { return d.properties.center[0]; })
	.attr('cy', function(d) { return d.properties.center[1]; })
	.attr('r', 0);

	style();

	setInterval(style, 3000);
	});

	function style () {
	states
	.transition()
	.duration(1000)
	.attr('fill', function() { return colorScale(randomNumber(0, 8)) })
	.attr('fill-opacity', function() { return Math.random(); });

	circles
	.transition()
	.duration(1000)
	.attr('r', function(d) {
	d.properties.prev_value = d.properties.value \|\| 0;
	d.properties.value = randomNumber(0, 15);
	return d.properties.value;
	});
	}

	</script>
	</html>