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jhubley

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zoomable tile map with multiple paths and points (Iditarod routes)

A map of Iditarod routes over the years. The routes are drawn using svg.line, and scale as you zoom. The dots have tooltips. Using vector tiles as a base.

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

body {
	width:1000px;
  margin: 50px auto 0px auto;
}

#container {
  position: relative;
  overflow: hidden;
	background: #555;
}

#map{
	width:100%;
	height:100%;
}

#points{
	width:100%;
	height:100%;
	position:relative;
	z-index:100;
}

.layer {
  position: absolute;
}

.tile {
  pointer-events: none;
  position: absolute;
  width: 256px;
  height: 256px;
}

.info {
  position: absolute;
  bottom: 0px;
  left: 0px;
	padding: 20px;
	background: #000;
	color: #fff;
	width: 100%;
	z-index: 1000;
	font-family:Helvetica, Arial, sans-serif;
	font-size:16px;
}

.d3-tip {
  line-height: 1.5;
  font-weight: normal;
	font-family: Helvetica, Arial, sans-serif;
	font-size:13px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  border-radius: 3px;
	position:relative;
	z-index:101;
}

/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
  box-sizing: border-box;
  display: inline;
  font-size: 20px;
  width: 100%;
  line-height: .5;
  color: rgba(0, 0, 0, 0.8);
  content: "\25BC";
  position: absolute;
  text-align: center;
}

/* Style northward tooltips differently */
.d3-tip.n:after {
  margin: -1px 0 0 0;
  top: 100%;
  left: 0;
}

.checkpoint{
	opacity: .6;
	stroke-width:1px;
	stroke:#ccc;
}

.checkpoint:hover{
  opacity: 1.0;
	stroke: #000;
	stroke-width:2px;
}
#legend{
	position:absolute;
	top:0px;
	height:50px;
	background: #333;
	width: 975px;
	padding-left:25px;
	font-size:14px;
}
.legend{
	float:left;
	width:135px;
}
.legend.labels{
	color: #fff;
	font-family:Arial;
	padding-top:5px;
	line-height:130%;
	width: 100px;
}
.point.legend,
.rte.legend{
	width:25px;
}
.point.legend.labels{
	padding-top:13px;
	width:125px;
}

.rte.legend.labels{
	padding-top:13px;
	width:150px;
}
</style>
<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script src="https://d3js.org/d3.geo.tile.v0.min.js"></script>
<script src="d3.tip.js"></script>
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<div id="legend">
	<svg class="path legend">
		<line x1="10" y1="15" x2="120" y2="15" stroke-width="2" stroke="#ffffff" />
		<line x1="10" y1="35" x2="120" y2="35" stroke-width="2" stroke="#ffffff" stroke-dasharray = "10,10" />
	</svg>
	<div class="path legend labels">
		route<br/>
		flyover
	</div>
	<svg class="point legend">
		<circle cx="10" cy="23" r="7" fill="#ffffff"  />
	</svg>
	<div class="point legend labels">
		checkpoint
	</div>
	<svg class="rte legend">
		<rect x="0" y="15" width="14" height="14" fill="#ff4800"/>
	</svg>
	<div class="rte legend labels">
		Fairbanks Route
	</div>
	<svg class="rte legend">
		<rect x="0" y="15" width="14" height="14" fill="#007dab"/>
	</svg>
	<div class="rte legend labels">
		Northern Route
	</div>
	<svg class="rte legend">
		<rect x="0" y="15" width="14" height="14" fill="#08ab00"/>
	</svg>
	<div class="rte legend labels">
		Southern Route
	</div>
</div>
<script>

var width = 1000,
    height = 700,
    prefix = prefixMatch(["webkit", "ms", "Moz", "O"]);

d3.csv("iditarod.csv", function(error, dataset) { createMap(dataset) });

var tile = d3.geo.tile()
    .size([width, height]);

var projection = d3.geo.mercator()
.scale((1 << 14) / 2 / Math.PI)
.translate([-width / 2, -height / 2]); // just temporary

var tileProjection = d3.geo.mercator();

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

var zoom = d3.behavior.zoom()
    .scale(projection.scale() * 2 * Math.PI)
    .scaleExtent([1 << 9, 1 << 25])
    .translate(projection([-155.259395, 63.401919]).map(function(x) { return -x; }))
    .on("zoom", zoomed);
		
var container = d3.select("body").append("div")
    .attr("id", "container")
    .style("width", width + "px")
    .style("height", height + "px")
    .call(zoom);

var map = container.append("g")
		.attr("id", "map")

var points = container.append("svg")
		.attr("id", "points")
				
var layer = map.append("div")
    .attr("class", "layer");

zoomed();

var tip = d3.tip()
		  .attr('class', 'd3-tip')
		  .offset([-10, 0])
		  .html(function(d) { return d.Checkpoint;})

points.call(tip);

function createMap(dataset) {
	d3.select("#points").selectAll("circle").data(dataset) //plotted 	locations on map
	.enter()
	.append("circle")
	.attr("r", 6)
	.attr("cx", function(d) {return projection([d.y,d.x])[0]})
	.attr("cy", function(d) {return projection([d.y,d.x])[1]})
	.attr("fill", function(d){ if(d.Route == "SR"){ return "#08ab00"}
		else if (d.Route == "NR"){ return "#007dab"} 
		else { return "#ff4800";}})
	.attr("class", function(d){return "checkpoint " + d.Route})
	.on('mouseover', tip.show)
	.on('mouseout', tip.hide)

zoomed();

}

function reDraw() {
	d3.selectAll(".route")
	.remove();
}

function zoomed() {
  var tiles = tile
      .scale(zoom.scale())
      .translate(zoom.translate())
      ();

projection
      .scale(zoom.scale() / 2 / Math.PI)
      .translate(zoom.translate());

FRA = [{x:61.2185, y:-149.8812},
					{x:61.1562, y:-149.7955}];
					FRB = [{x:61.1562, y:-149.7955},
					{x:64.833767, y:-147.676556}];
					FR = [{x:64.833767, y:-147.676556},
					{x:64.538563, y:-149.082897},
					{x:65.015584, y:-150.684809},
					{x:65.174148, y:-152.07792},
					{x:64.719639, y:-155.506494},
					{x:64.7333, y:-156.9275},
					{x:65.698943, y:-156.333292},
					{x:64.90067, y:-157.699833},
					{x:64.7194, y:-158.1031},
					{x:64.3272, y:-158.7219},
					{x:63.8731, y:-160.7881},
					{x:64.3339, y:-161.1539},
					{x:64.9319, y:-161.1569},
					{x:64.6175, y:-162.2606},
					{x:64.563947, y:-162.99303},
					{x:64.6813, y:-163.4055},
					{x:64.5356, y:-164.4742},
					{x:64.5011, y:-165.4063}];
										
						NRA = [{x:61.2185, y:-149.8812},
						{x:61.1562, y:-149.7955}];
						NRB = [{x:61.1562, y:-149.7955},
						{x:61.771615, y:-149.993809}];
						NR = [{x:61.771615, y:-149.993809},
						{x:61.7322, y:-150.6789},
						{x:61.9651, y:-151.1727},
						{x:61.9793, y:-152.0728},
						{x:62.0872, y:-152.7232},
						{x:62.3031, y:-153.3788},
						{x:63.0133, y:-154.375},
						{x:62.9532, y:-155.5959},
						{x:62.9886, y:-156.0641},
						{x:63.146, y:-156.5299},
						{x:63.41, y:-156.2},
						{x:64.7394, y:-155.4869},
						{x:64.7333, y:-156.9275},
						{x:64.7194, y:-158.1031},
						{x:64.3272, y:-158.7219},
						{x:63.8731, y:-160.7881},
						{x:64.3339, y:-161.1539},
						{x:64.9319, y:-161.1569},
						{x:64.6175, y:-162.2606},
						{x:64.563947, y:-162.99303},
						{x:64.6813, y:-163.4055},
						{x:64.5356, y:-164.4742},
						{x:64.5011, y:-165.4063}];
						
		var routepath = d3.svg.line()
					.x(function(d){return projection([d.y,d.x])[0];})
					.y(function(d){return projection([d.y,d.x])[1];})
					.interpolate("linear")
					reDraw();

route1 = d3.select("#points").append("g")
				   .attr("id", "paths")

route1.append("svg:path")
				   .attr("d", routepath(SR))
				   .attr("class", "route southern")
			     .style("stroke-width", 2)
			     .style("stroke", "#08ab00")
		       .style("fill", "none");
						
		route2 = d3.select("#points").append("g")
		  		  .attr("id", "paths2")

route2.append("svg:path")
	          .attr("d", routepath(FR))
			   		.attr("class", "route fairbanks")
				    .style("stroke-width", 2)
				    .style("stroke", "#ff4800")
				    .style("fill", "none");
										
		route3 = d3.select("#points").append("g")
					  .attr("id", "paths3")

route3.append("svg:path")
					    .attr("d", routepath(NR))
							.attr("class", "route northern")
					    .style("stroke-width", 2)
					    .style("stroke", "#007dab")
					    .style("fill", "none");

route4 = d3.select("#points").append("g")
			    		.attr("id", "paths4")

route4.append("svg:path")
							.attr("d", routepath(FRA))
							.attr("class", "route fairbanks")
							.style("stroke-width", 3)
							.style("stroke", "#ff4800")
							.style("fill", "none");

route5 = d3.select("#points").append("g")
							.attr("id", "paths5")

route5.append("svg:path")
							.attr("d", routepath(FRB))
							.attr("class", "route fairbanks")
							.style("stroke-width", 3)
							.style("stroke", "#ff4800")
							.style("stroke-dasharray", "10,10")
							.style("fill", "none");
											
		route6 = d3.select("#points").append("g")
					    .attr("id", "paths6")

route6.append("svg:path")
		          .attr("d", routepath(SRA))
							.attr("class", "route southern")
			        .style("stroke-width", 3)
					    .style("stroke", "#08ab00")
			   	    .style("fill", "none");

route7 = d3.select("#points").append("g")
		   				.attr("id", "paths7")

route7.append("svg:path")
		  				.attr("d", routepath(SRB))
							.attr("class", "route southern")
			  			.style("stroke-width", 3)
							.style("stroke", "#08ab00")
				    	.style("stroke-dasharray", "10,10")
						  .style("fill", "none");
											
		route8 = d3.select("#points").append("g")
							.attr("id", "paths8")

route8.append("svg:path")
							.attr("d", routepath(NRA))
							.attr("class", "route northern")
							.style("stroke-width", 3)
							.style("stroke", "#007dab")
							.style("fill", "none");

route9 = d3.select("#points").append("g")
							.attr("id", "paths9")

route9.append("svg:path")
							.attr("d", routepath(NRB))
							.attr("class", "route northern")
							.style("stroke-width", 3)
							.style("stroke", "#007dab")
							.style("stroke-dasharray", "10,10")
							.style("fill", "none");
							
var image = layer
      .style(prefix + "transform", matrix3d(tiles.scale, tiles.translate))
    	.selectAll(".tile")
      .data(tiles, function(d) { return d; });

image.exit()
      .remove();

image.enter().append("img")
      .attr("class", "tile")
			.attr("src", function(d) { return "https://otile" + ["1", "2", "3", "4"][Math.random() * 4 | 0] + ".mqcdn.com/tiles/1.0.0/map/" + d[2] + "/" + d[0] + "/" + d[1] + ".jpg"; })
      .style("left", function(d) { return (d[0] << 8) + "px"; })
      .style("top", function(d) { return (d[1] << 8) + "px"; });
}

function matrix3d(scale, translate) {
  var k = scale / 256, r = scale % 1 ? Number : Math.round;
  return "matrix3d(" + [k, 0, 0, 0, 0, k, 0, 0, 0, 0, k, 0, r(translate[0] * scale), r(translate[1] * scale), 0, 1 ] + ")";
}

function prefixMatch(p) {
  var i = -1, n = p.length, s = document.body.style;
  while (++i < n) if (p[i] + "Transform" in s) return "-" + p[i].toLowerCase() + "-";
  return "";
}

function formatLocation(p, k) {
  var format = d3.format("." + Math.floor(Math.log(k) / 2 - 2) + "f");
  return (p[1] < 0 ? format(-p[1]) + "°S" : format(p[1]) + "°N") + " "
       + (p[0] < 0 ? format(-p[0]) + "°W" : format(p[0]) + "°E");
}

</script>
</body>
</html>

Modified http://d3js.org/d3.v3.min.js to a secure url

Modified http://d3js.org/d3.geo.tile.v0.min.js to a secure url

https://d3js.org/d3.v3.min.js

https://d3js.org/d3.geo.tile.v0.min.js

https://code.jquery.com/jquery-1.10.2.js