NelsonMinar/README.md

## README.md

      
    Raw
  

              README.md
            
          
    Fun with vector maps

A goofy slippy map of various vector tile data sources.
With some "fun" colours, and apologies and respects to Prettymaps.
Layers used here:

ESRI's shaded relief tiles
My vector river tiles
OpenStreetMap vector tiles

Tested with Chrome.

  
## index.html
<!DOCTYPE html>
<html lang="en"><head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0"/>

<title>Leaflet vector tile map of rivers</title>

<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.5/leaflet.css" />
<!--[if lte IE 8]>
    <link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.5/leaflet.ie.css" />
<![endif]-->
<script src="http://cdn.leafletjs.com/leaflet-0.5/leaflet.js"></script>
<script src="leaflet-hash.js"></script>
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="TileLayer.d3_geoJSON.js"></script>

<style type="text/css">
html, body { height: 100% }
#map { min-height: 100%; }
body {
    margin: 0;
    font-family: Helvetica, Arial, sans-serif; font-size: 12px;
    overflow: hidden;
    background-color: #f00;
}
.leaflet-popup-content-wrapper {
    -webkit-border-radius: 5px;
    border-radius: 5px;
}

path { stroke-linejoin; round; stroke-linecap: round; fill: none}
path.river { stroke : #24b; }
path.road { stroke: #b42; }
path.water { stroke: #bcf; fill: #abf; }
path.landuse { stroke: #bb2; fill: #cc2; opacity: 0.5 }
img { -webkit-filter: grayscale(100%) brightness(40%) contrast(150%);}
</style>

</head><body>

<div id="map"></div>


<script type="text/javascript">

// Construct map, center if no location provided
var map = L.map('map', { minZoom: 10, maxZoom: 13 } );

var hash = new L.Hash(map);
if (!window.location.hash) {
    map.setView([39.28, -121.18], 10);
}

// Make the base map; a raster tile relief map from ESRI
var esriRelief = 'http://server.arcgisonline.com/ArcGIS/rest/services/World_Shaded_Relief/MapServer/tile/{z}/{y}/{x}'
var basemap = L.tileLayer(esriRelief, {
        attribution: '<a href="http://www.arcgis.com/home/item.html?id=9c5370d0b54f4de1b48a3792d7377ff2">ESRI shaded relief</a>, <a href="http://www.horizon-systems.com/NHDPlus/NHDPlusV2_home.php">NHDPlus v2</a>, OpenStreetMap',
        maxZoom: 13
});
basemap.addTo(map);

// Add a fake GeoJSON line to coerce Leaflet into creating the <svg> tag that d3_geoJson needs
new L.geoJson({"type": "LineString","coordinates":[[0,0],[0,0]]}).addTo(map);

// Land use areas from OpenStreetMap
// Water Areas from OpenStreetMap
var landColors = {
  "farm": "#4a4",
  "meadow": "#4a4",
  "scrub": "#4a4",
  "forest": "#4a4",
  "farmyard": "#4a4",
  "farmland": "#4a4",
  "wood": "#4a4",
  "park": "#4a4",
  "cemetery": "#4a4",
  "golf_course": "#4a4",
  "grass": "#4a4",
  "nature_reserve": "#4a4",
  "pitch": "#4a4",
  "common": "#4a4",
  "residential": "#ddd",
  "industrial": "#b3c",
  "commercial": "#b3c",
  "retail": "#b3c",
  "parking": "#b3c",
  "quarry": "#b3c",
  "school": "#b3c",
  "hospital": "#b3c",
  "college": "#b3c",
  "university": "#b3c",
}
new L.TileLayer.d3_geoJSON("http://tile.openstreetmap.us/vectiles-land-usages/{z}/{x}/{y}.json", {
  class: "landuse",
  style: function(d) {
    var c = landColors[d.properties.kind];
    if (!c) { c = "#fff"; }
    return "fill: " + c;
  }
}).addTo(map);

// Rivers from Nelson's vector river tutorial
new L.TileLayer.d3_geoJSON("http://somebits.com:8001/rivers/{z}/{x}/{y}.json", {
  class: "river",
  style: function(d) { return "stroke-width: " + d.properties.strahler * map.getZoom()/13 + "px"; }
}).addTo(map);

// Water Areas from OpenStreetMap
new L.TileLayer.d3_geoJSON("http://tile.openstreetmap.us/vectiles-water-areas/{z}/{x}/{y}.json", {
  class: "water",
  style: function(d) { return ""; }
}).addTo(map);

// Highways from OpenStreetMap
var roadSizes = {
  "highway": "5px",
  "major_road": "4px",
  "minor_road": "2px",
  "rail": "0px",
  "path": "1px"
};
new L.TileLayer.d3_geoJSON("http://tile.openstreetmap.us/vectiles-highroad/{z}/{x}/{y}.json", {
  class: "road",
  style: function(d) { return "stroke-width: " + roadSizes[d.properties.kind]; }
}).addTo(map);


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

## leaflet-hash.js
(function(window) {
	var HAS_HASHCHANGE = (function() {
		var doc_mode = window.documentMode;
		return ('onhashchange' in window) &&
			(doc_mode === undefined || doc_mode > 7);
	})();

	L.Hash = function(map) {
		this.onHashChange = L.Util.bind(this.onHashChange, this);

		if (map) {
			this.init(map);
		}
	};

	L.Hash.prototype = {
		map: null,
		lastHash: null,

		parseHash: function(hash) {
			if(hash.indexOf('#') === 0) {
				hash = hash.substr(1);
			}
			var args = hash.split("/");
			if (args.length == 3) {
				var zoom = parseInt(args[0], 10),
				lat = parseFloat(args[1]),
				lon = parseFloat(args[2]);
				if (isNaN(zoom) || isNaN(lat) || isNaN(lon)) {
					return false;
				} else {
					return {
						center: new L.LatLng(lat, lon),
						zoom: zoom
					};
				}
			} else {
				return false;
			}
		},

		formatHash: function(map) {
			var center = map.getCenter(),
			    zoom = map.getZoom(),
			    precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));

			return "#" + [zoom,
				center.lat.toFixed(precision),
				center.lng.toFixed(precision)
			].join("/");
		},

		init: function(map) {
			this.map = map;

			// reset the hash
			this.lastHash = null;
			this.onHashChange();

			if (!this.isListening) {
				this.startListening();
			}
		},

		remove: function() {
			if (this.changeTimeout) {
				clearTimeout(this.changeTimeout);
			}

			if (this.isListening) {
				this.stopListening();
			}

			this.map = null;
		},

		onMapMove: function() {
			// bail if we're moving the map (updating from a hash),
			// or if the map is not yet loaded

			if (this.movingMap || !this.map._loaded) {
				return false;
			}

			var hash = this.formatHash(this.map);
			if (this.lastHash != hash) {
				location.replace(hash);
				this.lastHash = hash;
			}
		},

		movingMap: false,
		update: function() {
			var hash = location.hash;
			if (hash === this.lastHash) {
				return;
			}
			var parsed = this.parseHash(hash);
			if (parsed) {
				this.movingMap = true;

				this.map.setView(parsed.center, parsed.zoom);

				this.movingMap = false;
			} else {
				this.onMapMove(this.map);
			}
		},

		// defer hash change updates every 100ms
		changeDefer: 100,
		changeTimeout: null,
		onHashChange: function() {
			// throttle calls to update() so that they only happen every
			// `changeDefer` ms
			if (!this.changeTimeout) {
				var that = this;
				this.changeTimeout = setTimeout(function() {
					that.update();
					that.changeTimeout = null;
				}, this.changeDefer);
			}
		},

		isListening: false,
		hashChangeInterval: null,
		startListening: function() {
			this.map.on("moveend", this.onMapMove, this);

			if (HAS_HASHCHANGE) {
				L.DomEvent.addListener(window, "hashchange", this.onHashChange);
			} else {
				clearInterval(this.hashChangeInterval);
				this.hashChangeInterval = setInterval(this.onHashChange, 50);
			}
			this.isListening = true;
		},

		stopListening: function() {
			this.map.off("moveend", this.onMapMove, this);

			if (HAS_HASHCHANGE) {
				L.DomEvent.removeListener(window, "hashchange", this.onHashChange);
			} else {
				clearInterval(this.hashChangeInterval);
			}
			this.isListening = false;
		}
	};
	L.hash = function(map) {
		return new L.Hash(map);
	};
	L.Map.prototype.addHash = function() {
		this._hash = L.hash(this);
	};
	L.Map.prototype.removeHash = function() {
		this._hash.remove();
	};
})(window);

## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## TileLayer.d3_geoJSON.js
/* Experimental vector tile layer for Leaflet
 * Uses D3 to render GeoJSON; faster than Leaflet's native.
 * Originally by Ziggy Jonsson: http://bl.ocks.org/ZJONSSON/5602552
 * Reworked by Nelson Minar: http://bl.ocks.org/NelsonMinar/5624141
 *
 * Todo:
 *   Make this work even if <svg> isn't in the DOM yet
 *   Make this work for tile types that aren't FeatureCollection
 *   Match D3 idioms for .classed(), .style(), etc
 *   Work on allowing feature popups, etc.
 */
L.TileLayer.d3_geoJSON =  L.TileLayer.extend({
    onAdd : function(map) {
        L.TileLayer.prototype.onAdd.call(this,map);
        this._path = d3.geo.path().projection(function(d) {
            var point = map.latLngToLayerPoint(new L.LatLng(d[1],d[0]));
            return [point.x,point.y];
        });
        this.on("tileunload",function(d) {
            if (d.tile.xhr) d.tile.xhr.abort();
            if (d.tile.nodes) d.tile.nodes.remove();
            d.tile.nodes = null;
            d.tile.xhr = null;
        });
    },
    _loadTile : function(tile,tilePoint) {
        var self = this;
        this._adjustTilePoint(tilePoint);

        if (!tile.nodes && !tile.xhr) {
            tile.xhr = d3.json(this.getTileUrl(tilePoint),function(geoJson) {
                tile.xhr = null;
                tile.nodes = d3.select(map._container).select("svg").append("g");
                tile.nodes.selectAll("path")
                    .data(geoJson.features).enter()
                  .append("path")
                    .attr("d", self._path)
                    .attr("class", self.options.class)
                    .attr("style", self.options.style);
            });
        }
    }
});
	<!DOCTYPE html>
	<html lang="en"><head>
	<meta charset="utf-8">
	<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0"/>

	<title>Leaflet vector tile map of rivers</title>

	<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.5/leaflet.css" />
	<!--[if lte IE 8]>
	<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.5/leaflet.ie.css" />
	<![endif]-->
	<script src="http://cdn.leafletjs.com/leaflet-0.5/leaflet.js"></script>
	<script src="leaflet-hash.js"></script>
	<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
	<script src="TileLayer.d3_geoJSON.js"></script>

	<style type="text/css">
	html, body { height: 100% }
	#map { min-height: 100%; }
	body {
	margin: 0;
	font-family: Helvetica, Arial, sans-serif; font-size: 12px;
	overflow: hidden;
	background-color: #f00;
	}
	.leaflet-popup-content-wrapper {
	-webkit-border-radius: 5px;
	border-radius: 5px;
	}

	path { stroke-linejoin; round; stroke-linecap: round; fill: none}
	path.river { stroke : #24b; }
	path.road { stroke: #b42; }
	path.water { stroke: #bcf; fill: #abf; }
	path.landuse { stroke: #bb2; fill: #cc2; opacity: 0.5 }
	img { -webkit-filter: grayscale(100%) brightness(40%) contrast(150%);}
	</style>

	</head><body>

	<div id="map"></div>


	<script type="text/javascript">

	// Construct map, center if no location provided
	var map = L.map('map', { minZoom: 10, maxZoom: 13 } );

	var hash = new L.Hash(map);
	if (!window.location.hash) {
	map.setView([39.28, -121.18], 10);
	}

	// Make the base map; a raster tile relief map from ESRI
	var esriRelief = 'http://server.arcgisonline.com/ArcGIS/rest/services/World_Shaded_Relief/MapServer/tile/{z}/{y}/{x}'
	var basemap = L.tileLayer(esriRelief, {
	attribution: '<a href="http://www.arcgis.com/home/item.html?id=9c5370d0b54f4de1b48a3792d7377ff2">ESRI shaded relief</a>, <a href="http://www.horizon-systems.com/NHDPlus/NHDPlusV2_home.php">NHDPlus v2</a>, OpenStreetMap',
	maxZoom: 13
	});
	basemap.addTo(map);

	// Add a fake GeoJSON line to coerce Leaflet into creating the <svg> tag that d3_geoJson needs
	new L.geoJson({"type": "LineString","coordinates":[[0,0],[0,0]]}).addTo(map);

	// Land use areas from OpenStreetMap
	// Water Areas from OpenStreetMap
	var landColors = {
	"farm": "#4a4",
	"meadow": "#4a4",
	"scrub": "#4a4",
	"forest": "#4a4",
	"farmyard": "#4a4",
	"farmland": "#4a4",
	"wood": "#4a4",
	"park": "#4a4",
	"cemetery": "#4a4",
	"golf_course": "#4a4",
	"grass": "#4a4",
	"nature_reserve": "#4a4",
	"pitch": "#4a4",
	"common": "#4a4",
	"residential": "#ddd",
	"industrial": "#b3c",
	"commercial": "#b3c",
	"retail": "#b3c",
	"parking": "#b3c",
	"quarry": "#b3c",
	"school": "#b3c",
	"hospital": "#b3c",
	"college": "#b3c",
	"university": "#b3c",
	}
	new L.TileLayer.d3_geoJSON("http://tile.openstreetmap.us/vectiles-land-usages/{z}/{x}/{y}.json", {
	class: "landuse",
	style: function(d) {
	var c = landColors[d.properties.kind];
	if (!c) { c = "#fff"; }
	return "fill: " + c;
	}
	}).addTo(map);

	// Rivers from Nelson's vector river tutorial
	new L.TileLayer.d3_geoJSON("http://somebits.com:8001/rivers/{z}/{x}/{y}.json", {
	class: "river",
	style: function(d) { return "stroke-width: " + d.properties.strahler * map.getZoom()/13 + "px"; }
	}).addTo(map);

	// Water Areas from OpenStreetMap
	new L.TileLayer.d3_geoJSON("http://tile.openstreetmap.us/vectiles-water-areas/{z}/{x}/{y}.json", {
	class: "water",
	style: function(d) { return ""; }
	}).addTo(map);

	// Highways from OpenStreetMap
	var roadSizes = {
	"highway": "5px",
	"major_road": "4px",
	"minor_road": "2px",
	"rail": "0px",
	"path": "1px"
	};
	new L.TileLayer.d3_geoJSON("http://tile.openstreetmap.us/vectiles-highroad/{z}/{x}/{y}.json", {
	class: "road",
	style: function(d) { return "stroke-width: " + roadSizes[d.properties.kind]; }
	}).addTo(map);


	</script>
	</body></html>
	(function(window) {
	var HAS_HASHCHANGE = (function() {
	var doc_mode = window.documentMode;
	return ('onhashchange' in window) &&
	(doc_mode === undefined \|\| doc_mode > 7);
	})();

	L.Hash = function(map) {
	this.onHashChange = L.Util.bind(this.onHashChange, this);

	if (map) {
	this.init(map);
	}
	};

	L.Hash.prototype = {
	map: null,
	lastHash: null,

	parseHash: function(hash) {
	if(hash.indexOf('#') === 0) {
	hash = hash.substr(1);
	}
	var args = hash.split("/");
	if (args.length == 3) {
	var zoom = parseInt(args[0], 10),
	lat = parseFloat(args[1]),
	lon = parseFloat(args[2]);
	if (isNaN(zoom) \|\| isNaN(lat) \|\| isNaN(lon)) {
	return false;
	} else {
	return {
	center: new L.LatLng(lat, lon),
	zoom: zoom
	};
	}
	} else {
	return false;
	}
	},

	formatHash: function(map) {
	var center = map.getCenter(),
	zoom = map.getZoom(),
	precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));

	return "#" + [zoom,
	center.lat.toFixed(precision),
	center.lng.toFixed(precision)
	].join("/");
	},

	init: function(map) {
	this.map = map;

	// reset the hash
	this.lastHash = null;
	this.onHashChange();

	if (!this.isListening) {
	this.startListening();
	}
	},

	remove: function() {
	if (this.changeTimeout) {
	clearTimeout(this.changeTimeout);
	}

	if (this.isListening) {
	this.stopListening();
	}

	this.map = null;
	},

	onMapMove: function() {
	// bail if we're moving the map (updating from a hash),
	// or if the map is not yet loaded

	if (this.movingMap \|\| !this.map._loaded) {
	return false;
	}

	var hash = this.formatHash(this.map);
	if (this.lastHash != hash) {
	location.replace(hash);
	this.lastHash = hash;
	}
	},

	movingMap: false,
	update: function() {
	var hash = location.hash;
	if (hash === this.lastHash) {
	return;
	}
	var parsed = this.parseHash(hash);
	if (parsed) {
	this.movingMap = true;

	this.map.setView(parsed.center, parsed.zoom);

	this.movingMap = false;
	} else {
	this.onMapMove(this.map);
	}
	},

	// defer hash change updates every 100ms
	changeDefer: 100,
	changeTimeout: null,
	onHashChange: function() {
	// throttle calls to update() so that they only happen every
	// `changeDefer` ms
	if (!this.changeTimeout) {
	var that = this;
	this.changeTimeout = setTimeout(function() {
	that.update();
	that.changeTimeout = null;
	}, this.changeDefer);
	}
	},

	isListening: false,
	hashChangeInterval: null,
	startListening: function() {
	this.map.on("moveend", this.onMapMove, this);

	if (HAS_HASHCHANGE) {
	L.DomEvent.addListener(window, "hashchange", this.onHashChange);
	} else {
	clearInterval(this.hashChangeInterval);
	this.hashChangeInterval = setInterval(this.onHashChange, 50);
	}
	this.isListening = true;
	},

	stopListening: function() {
	this.map.off("moveend", this.onMapMove, this);

	if (HAS_HASHCHANGE) {
	L.DomEvent.removeListener(window, "hashchange", this.onHashChange);
	} else {
	clearInterval(this.hashChangeInterval);
	}
	this.isListening = false;
	}
	};
	L.hash = function(map) {
	return new L.Hash(map);
	};
	L.Map.prototype.addHash = function() {
	this._hash = L.hash(this);
	};
	L.Map.prototype.removeHash = function() {
	this._hash.remove();
	};
	})(window);
	/* Experimental vector tile layer for Leaflet
	* Uses D3 to render GeoJSON; faster than Leaflet's native.
	* Originally by Ziggy Jonsson: http://bl.ocks.org/ZJONSSON/5602552
	* Reworked by Nelson Minar: http://bl.ocks.org/NelsonMinar/5624141
	*
	* Todo:
	* Make this work even if <svg> isn't in the DOM yet
	* Make this work for tile types that aren't FeatureCollection
	* Match D3 idioms for .classed(), .style(), etc
	* Work on allowing feature popups, etc.
	*/
	L.TileLayer.d3_geoJSON = L.TileLayer.extend({
	onAdd : function(map) {
	L.TileLayer.prototype.onAdd.call(this,map);
	this._path = d3.geo.path().projection(function(d) {
	var point = map.latLngToLayerPoint(new L.LatLng(d[1],d[0]));
	return [point.x,point.y];
	});
	this.on("tileunload",function(d) {
	if (d.tile.xhr) d.tile.xhr.abort();
	if (d.tile.nodes) d.tile.nodes.remove();
	d.tile.nodes = null;
	d.tile.xhr = null;
	});
	},
	_loadTile : function(tile,tilePoint) {
	var self = this;
	this._adjustTilePoint(tilePoint);

	if (!tile.nodes && !tile.xhr) {
	tile.xhr = d3.json(this.getTileUrl(tilePoint),function(geoJson) {
	tile.xhr = null;
	tile.nodes = d3.select(map._container).select("svg").append("g");
	tile.nodes.selectAll("path")
	.data(geoJson.features).enter()
	.append("path")
	.attr("d", self._path)
	.attr("class", self.options.class)
	.attr("style", self.options.style);
	});
	}
	}
	});