farleyknight/.block

## .block
license: gpl-3.0

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<style>

html, body, #map {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

.stations, .stations svg {
  position: absolute;
}

.stations svg {
  width: 60px;
  height: 20px;
  padding-right: 100px;
  font: 10px sans-serif;
}

.stations circle {
  fill: brown;
  stroke: black;
  stroke-width: 1.5px;
}

</style>
<div id="map"></div>
<script src="//maps.google.com/maps/api/js?sensor=true"></script>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

// Create the Google Map…
var map = new google.maps.Map(d3.select("#map").node(), {
  zoom: 8,
  center: new google.maps.LatLng(37.76487, -122.41948),
  mapTypeId: google.maps.MapTypeId.TERRAIN
});

// Load the station data. When the data comes back, create an overlay.
d3.json("stations.json", function(error, data) {
  if (error) throw error;

  var overlay = new google.maps.OverlayView();

  // Add the container when the overlay is added to the map.
  overlay.onAdd = function() {
    var layer = d3.select(this.getPanes().overlayLayer).append("div")
        .attr("class", "stations");

    // Draw each marker as a separate SVG element.
    // We could use a single SVG, but what size would it have?
    overlay.draw = function() {
      var projection = this.getProjection(),
          padding = 10;

      var marker = layer.selectAll("svg")
          .data(d3.entries(data))
          .each(transform) // update existing markers
        .enter().append("svg")
          .each(transform)
          .attr("class", "marker");

      // Add a circle.
      marker.append("circle")
          .attr("r", 4.5)
          .attr("cx", padding)
          .attr("cy", padding);

      // Add a label.
      marker.append("text")
          .attr("x", padding + 7)
          .attr("y", padding)
          .attr("dy", ".31em")
          .text(function(d) { return d.key; });

      function transform(d) {
        d = new google.maps.LatLng(d.value[1], d.value[0]);
        d = projection.fromLatLngToDivPixel(d);
        return d3.select(this)
            .style("left", (d.x - padding) + "px")
            .style("top", (d.y - padding) + "px");
      }
    };
  };

  // Bind our overlay to the map…
  overlay.setMap(map);
});

</script>

## stations.json
{
  "Boston": [
    -71.05,
    42.36
  ],
  "New York": [
    -74.00,
    40.71
  ],
  "Houston": [
    -95.36,
    29.76
  ],
  "Chicago": [
    -87.62,
    41.87
  ],
  "San Francisco": [
    -122.41,
    37.77
  ],
  "Seattle": [
    -122.33,
    47.60
  ]
}

## thumbnail.png

      
    Raw
  

              thumbnail.png
	<!DOCTYPE html>
	<meta charset="utf-8">
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
	<style>

	html, body, #map {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
	}

	.stations, .stations svg {
	position: absolute;
	}

	.stations svg {
	width: 60px;
	height: 20px;
	padding-right: 100px;
	font: 10px sans-serif;
	}

	.stations circle {
	fill: brown;
	stroke: black;
	stroke-width: 1.5px;
	}

	</style>
	<div id="map"></div>
	<script src="//maps.google.com/maps/api/js?sensor=true"></script>
	<script src="//d3js.org/d3.v3.min.js"></script>
	<script>

	// Create the Google Map…
	var map = new google.maps.Map(d3.select("#map").node(), {
	zoom: 8,
	center: new google.maps.LatLng(37.76487, -122.41948),
	mapTypeId: google.maps.MapTypeId.TERRAIN
	});

	// Load the station data. When the data comes back, create an overlay.
	d3.json("stations.json", function(error, data) {
	if (error) throw error;

	var overlay = new google.maps.OverlayView();

	// Add the container when the overlay is added to the map.
	overlay.onAdd = function() {
	var layer = d3.select(this.getPanes().overlayLayer).append("div")
	.attr("class", "stations");

	// Draw each marker as a separate SVG element.
	// We could use a single SVG, but what size would it have?
	overlay.draw = function() {
	var projection = this.getProjection(),
	padding = 10;

	var marker = layer.selectAll("svg")
	.data(d3.entries(data))
	.each(transform) // update existing markers
	.enter().append("svg")
	.each(transform)
	.attr("class", "marker");

	// Add a circle.
	marker.append("circle")
	.attr("r", 4.5)
	.attr("cx", padding)
	.attr("cy", padding);

	// Add a label.
	marker.append("text")
	.attr("x", padding + 7)
	.attr("y", padding)
	.attr("dy", ".31em")
	.text(function(d) { return d.key; });

	function transform(d) {
	d = new google.maps.LatLng(d.value[1], d.value[0]);
	d = projection.fromLatLngToDivPixel(d);
	return d3.select(this)
	.style("left", (d.x - padding) + "px")
	.style("top", (d.y - padding) + "px");
	}
	};
	};

	// Bind our overlay to the map…
	overlay.setMap(map);
	});

	</script>
	{
	"Boston": [
	-71.05,
	42.36
	],
	"New York": [
	-74.00,
	40.71
	],
	"Houston": [
	-95.36,
	29.76
	],
	"Chicago": [
	-87.62,
	41.87
	],
	"San Francisco": [
	-122.41,
	37.77
	],
	"Seattle": [
	-122.33,
	47.60
	]
	}