lewis500/.block

## .block
license: gpl-3.0

## README.md

      
    Raw
  

              README.md
            
          
    Working with TopoJSON and d3.js projections for mapping geospatial data.
forked from mbostock's block: U.S. Counties TopoJSON
forked from almccon's block: d3 + TopoJSON

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

path {
  fill: #ccc;
}

path:hover {
  fill: red;
}


</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();

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


var url = "https://gist.githubusercontent.com/mbostock/4090846/raw/d534aba169207548a8a3d670c9c2cc719ff05c47/us.json"
d3.json(url, function(error, topology) {
  if (error) throw error;

  console.log("topojson", topology)
  var geojson = topojson.feature(topology, topology.objects.counties);
  console.log("geojson", geojson)

  var paths = svg.selectAll("path")
      .data(geojson.features)
    .enter().append("path")
      .attr("d", path)
  		.attr("stroke",'white')
      .attr("stroke-width",0.5);
  paths
    .on("mouseover", function(d){
        console.log(d)
        d3.select(this)
        	.transition('stroke')
        	.duration(200)
        	.ease('cubic')
        	.attr('stroke','purple')
        	.attr("stroke-width",6);
    })
  	.on("mouseout", function(){
        d3.select(this)
        	.transition('stroke')
          .duration(300)
          .delay(250)
        	.ease('cubic-out')
          .attr("stroke",'white')
        	.attr("stroke-width",0.5)
    })
  	.on("click",function(){
      d3.select(this).remove()
  })

});

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

	path {
	fill: #ccc;
	}

	path:hover {
	fill: red;
	}



	</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();

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


	var url = "https://gist.githubusercontent.com/mbostock/4090846/raw/d534aba169207548a8a3d670c9c2cc719ff05c47/us.json"
	d3.json(url, function(error, topology) {
	if (error) throw error;

	console.log("topojson", topology)
	var geojson = topojson.feature(topology, topology.objects.counties);
	console.log("geojson", geojson)

	var paths = svg.selectAll("path")
	.data(geojson.features)
	.enter().append("path")
	.attr("d", path)
	.attr("stroke",'white')
	.attr("stroke-width",0.5);
	paths
	.on("mouseover", function(d){
	console.log(d)
	d3.select(this)
	.transition('stroke')
	.duration(200)
	.ease('cubic')
	.attr('stroke','purple')
	.attr("stroke-width",6);
	})
	.on("mouseout", function(){
	d3.select(this)
	.transition('stroke')
	.duration(300)
	.delay(250)
	.ease('cubic-out')
	.attr("stroke",'white')
	.attr("stroke-width",0.5)
	})
	.on("click",function(){
	d3.select(this).remove()
	})

	});

	</script>