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agg-googleMaps.html
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agg-googleMaps.html
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<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?1.29.1"></script>
<style type="text/css">
html, body, #map {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
.crashes, .crashes svg {
position: absolute;
}
.crashes svg {
font: 10px sans-serif;
}
.crashes circle {
stroke: black;
stroke-width: 1.5px;
}
</style>
</head>
<body>
<div id="map"></div>
<script type="text/javascript">
function projectPoint(x, y) {
var point = map.latLngToLayerPoint(new L.LatLng(y, x));
this.stream.point(point.x, point.y);
}
d3.selection.prototype.moveToFront = function() {
return this.each(function(){
this.parentNode.appendChild(this);
});
};
// Create the Google Map…
var map = new google.maps.Map(d3.select("#map").node(), {
zoom: 12,
center: new google.maps.LatLng(44.9763201,-93.2708829),
mapTypeId: google.maps.MapTypeId.TERRAIN
});
d3.csv("bicycle-data-bad-removed.csv", function(data) {
var nestData = d3.nest().key(function(d){ return d.lat + "," + d.long}).entries(data);
for (var i = 0; i < nestData.length; i++) {
var intersectTotal = 0;
for (var j = 0; j < nestData[i].values.length; j++) {
if (nestData[i].values[j].Level == "Possible Injury (C)"){
intersectTotal+=2;
}
else if (nestData[i].values[j].Level == "Fatalities"){
intersectTotal+=5;
}
else if (nestData[i].values[j].Level == "Property Damage Only"){
intersectTotal+=1;
}
else if (nestData[i].values[j].Level == "Non-Incap. Injury (B)"){
intersectTotal+=3;
}
else if (nestData[i].values[j].Level == "Incap. Injury (A)"){
intersectTotal+=4;
}
}
nestData[i].intersectTotal = intersectTotal
}
var sortedNestData = nestData.sort(function(a,b){
return b.intersectTotal - a.intersectTotal;
});
console.log(sortedNestData)
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", "crashes");
// 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();
var padding = 3;
var marker = layer.selectAll("svg")
.data(d3.entries(nestData))
.each(transform) // update existing markers
.enter().append("svg:svg")
.each(transform)
.attr("class", "marker");
// Add a circle.
marker.append("svg:circle")
.attr("r", function(d){ return d.value.intersectTotal; })
.attr("opacity", 0.6)
.attr("cx", function(d){ return d.value.intersectTotal+padding; })
.attr("cy", function(d){ return d.value.intersectTotal+padding; })
.attr("fill", 'red');
function transform(d) {
var size = d.value.intersectTotal * 2;
var lat = Number(d.value.values[0].lat);
var long = Number(d.value.values[0].long);
d = new google.maps.LatLng(lat, long);
d = projection.fromLatLngToDivPixel(d);
return d3.select(this)
.style("height", (size+(padding*2)) + "px")
.style("width", (size+(padding*2)) + "px")
.style("left", (d.x-(size/2)-padding) + "px")
.style("top", (d.y-(size/2)-padding) + "px")
.moveToFront();
}
};
};
// Bind our overlay to the map…
overlay.setMap(map);
});
</script>
</body>
</html>