apoorv74/index.html

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

.districts {
  fill: #ccc;
}

.state-borders {
  fill: none;
  stroke: #fff;
  stroke-width: 1.5px;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.district-borders {
  fill: none;
  stroke: #fff;
  stroke-width: 0.5px;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.station-arcs {
  display: none;
  fill: none;
  stroke: #000;
}

.station-cell {
  fill: none;
  pointer-events: all;
}

.station circle {
  fill: steelblue;
  stroke: #fff;
  pointer-events: none;
}

.station:hover .station-arcs {
  display: inline;
}

svg:not(:hover) .station-cell {
  stroke: #000;
  stroke-opacity: .2;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/queue.v1.min.js"></script>
<script src="https://d3js.org/d3-voronoi.v0.3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,height = 1160;

var projection = d3.geo.mercator()
  .scale(500)
  .translate([-100,550]) ;

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

var voronoi = d3.geom.voronoi()
    .x(function(d) { return d.x; })
    .y(function(d) { return d.y; })
    .clipExtent([[0, 0], [width, height]]);

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

queue()
    .defer(d3.json, "india.json")
    .defer(d3.csv, "stations.csv")
    .defer(d3.csv, "trains.csv")
    .await(ready);

function ready(error, india, stations, trains) {
  if (error) throw error;

  var stationById = d3.map(),
      positions = [];

  stations.forEach(function(d) {
    stationById.set(d.id_code, d);
    d.outgoing = [];
    d.incoming = [];
  });

  trains.forEach(function(train) {
    var source = stationById.get(train.origin),
        target = stationById.get(train.destination),
        link = {source: source, target: target};
    source.outgoing.push(link);
    target.incoming.push(link);
  });

  stations = stations.filter(function(d) {
    if (d.count = Math.max(d.incoming.length, d.outgoing.length)) {
      d[0] = +d.longitude;
      d[1] = +d.latitude;
      var position = projection(d);
      d.x = position[0];
      d.y = position[1];
      return true;
    }
  });

  newStations = [] ;

  voronoi(stations)
      .forEach(function(d,i,j) {
        // console.log(d) ;
        d.point.cell = d;
        newStations.push(d.point);
    });


  svg.append("path")
      .datum(topojson.feature(india, india.objects.india5))
      .attr("class", "districts")
      .attr("d", path);

  svg.append("path")
      .datum(topojson.mesh(india, india.objects.india5, function(a, b) { return a !== b; }))
      .attr("class", "district-borders")
      .attr("d", path);

  var station = svg.append("g")
      .attr("class", "stations")
    .selectAll("g")
      .data(newStations.sort(function(a, b) { return b.count - a.count; }))
    .enter().append("g")
      .attr("class", "station");
      // console.log(station)

  station.append("g")
      .attr("class", "station-arcs")
    .selectAll("path")
      .data(function(d) { return d.outgoing; })
    .enter().append("path")
      .attr("d", function(d) { return path({type: "LineString", coordinates: [d.source, d.target]}); });

  station.append("path")
      .attr("class", "station-cell")
      .attr("d", function(d) {
        console.log(d) ;
        return d.cell.length ? "M" + d.cell.join("L") + "Z" : null; });


  station.append("circle")
      .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
      .attr("r", 2);
      // .attr("r", function(d, i) { return Math.sqrt(d.count); });

}

</script>

## india.json

      
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              india.json
            
          
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## stations.csv

      
    Raw
  

              stations.csv
            
          
            View raw
              (Sorry about that, but we can’t show files that are this big right now.)
        
    
## trains.csv

      
    Raw
  

              trains.csv
            
          
            View raw
              (Sorry about that, but we can’t show files that are this big right now.)
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	.districts {
	fill: #ccc;
	}

	.state-borders {
	fill: none;
	stroke: #fff;
	stroke-width: 1.5px;
	stroke-linejoin: round;
	stroke-linecap: round;
	}
	.district-borders {
	fill: none;
	stroke: #fff;
	stroke-width: 0.5px;
	stroke-linejoin: round;
	stroke-linecap: round;
	}

	.station-arcs {
	display: none;
	fill: none;
	stroke: #000;
	}

	.station-cell {
	fill: none;
	pointer-events: all;
	}

	.station circle {
	fill: steelblue;
	stroke: #fff;
	pointer-events: none;
	}

	.station:hover .station-arcs {
	display: inline;
	}

	svg:not(:hover) .station-cell {
	stroke: #000;
	stroke-opacity: .2;
	}

	</style>
	<body>
	<script src="//d3js.org/d3.v3.min.js"></script>
	<script src="//d3js.org/queue.v1.min.js"></script>
	<script src="https://d3js.org/d3-voronoi.v0.3.min.js"></script>
	<script src="//d3js.org/topojson.v1.min.js"></script>
	<script>

	var width = 960,height = 1160;

	var projection = d3.geo.mercator()
	.scale(500)
	.translate([-100,550]) ;

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

	var voronoi = d3.geom.voronoi()
	.x(function(d) { return d.x; })
	.y(function(d) { return d.y; })
	.clipExtent([[0, 0], [width, height]]);

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

	queue()
	.defer(d3.json, "india.json")
	.defer(d3.csv, "stations.csv")
	.defer(d3.csv, "trains.csv")
	.await(ready);

	function ready(error, india, stations, trains) {
	if (error) throw error;

	var stationById = d3.map(),
	positions = [];

	stations.forEach(function(d) {
	stationById.set(d.id_code, d);
	d.outgoing = [];
	d.incoming = [];
	});

	trains.forEach(function(train) {
	var source = stationById.get(train.origin),
	target = stationById.get(train.destination),
	link = {source: source, target: target};
	source.outgoing.push(link);
	target.incoming.push(link);
	});

	stations = stations.filter(function(d) {
	if (d.count = Math.max(d.incoming.length, d.outgoing.length)) {
	d[0] = +d.longitude;
	d[1] = +d.latitude;
	var position = projection(d);
	d.x = position[0];
	d.y = position[1];
	return true;
	}
	});

	newStations = [] ;

	voronoi(stations)
	.forEach(function(d,i,j) {
	// console.log(d) ;
	d.point.cell = d;
	newStations.push(d.point);
	});



	svg.append("path")
	.datum(topojson.feature(india, india.objects.india5))
	.attr("class", "districts")
	.attr("d", path);

	svg.append("path")
	.datum(topojson.mesh(india, india.objects.india5, function(a, b) { return a !== b; }))
	.attr("class", "district-borders")
	.attr("d", path);

	var station = svg.append("g")
	.attr("class", "stations")
	.selectAll("g")
	.data(newStations.sort(function(a, b) { return b.count - a.count; }))
	.enter().append("g")
	.attr("class", "station");
	// console.log(station)

	station.append("g")
	.attr("class", "station-arcs")
	.selectAll("path")
	.data(function(d) { return d.outgoing; })
	.enter().append("path")
	.attr("d", function(d) { return path({type: "LineString", coordinates: [d.source, d.target]}); });

	station.append("path")
	.attr("class", "station-cell")
	.attr("d", function(d) {
	console.log(d) ;
	return d.cell.length ? "M" + d.cell.join("L") + "Z" : null; });



	station.append("circle")
	.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
	.attr("r", 2);
	// .attr("r", function(d, i) { return Math.sqrt(d.count); });

	}

	</script>