Adapting the earlier OSM vector tiles example to show how to render multiple layers.
Vector Tiles
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
license: gpl-3.0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
d3.geo.tile=function(){function t(){var t=Math.max(Math.log(n)/Math.LN2-8,0),h=Math.round(t+e),o=Math.pow(2,t-h+8),u=[(r[0]-n/2)/o,(r[1]-n/2)/o],l=[],c=d3.range(Math.max(0,Math.floor(-u[0])),Math.max(0,Math.ceil(a[0]/o-u[0]))),M=d3.range(Math.max(0,Math.floor(-u[1])),Math.max(0,Math.ceil(a[1]/o-u[1])));return M.forEach(function(t){c.forEach(function(a){l.push([a,t,h])})}),l.translate=u,l.scale=o,l}var a=[960,500],n=256,r=[a[0]/2,a[1]/2],e=0;return t.size=function(n){return arguments.length?(a=n,t):a},t.scale=function(a){return arguments.length?(n=a,t):n},t.translate=function(a){return arguments.length?(r=a,t):r},t.zoomDelta=function(a){return arguments.length?(e=+a,t):e},t}; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
margin: 0; | |
} | |
path { | |
fill: none; | |
stroke: #000; | |
stroke-linejoin: round; | |
stroke-linecap: round; | |
} | |
.major_road { stroke: #776; } | |
.minor_road { stroke: #ccb; } | |
.highway { stroke: #f39; stroke-width: 1.5px; } | |
.rail { stroke: #7de; } | |
.buildings path { stroke: none; fill: black; } | |
</style> | |
<body> | |
<script src="//d3js.org/d3.v3.min.js"></script> | |
<script src="d3.geo.tile.min.js"></script> | |
<script> | |
var width = Math.max(960, window.innerWidth), | |
height = Math.max(500, window.innerHeight); | |
var tiler = d3.geo.tile() | |
.size([width, height]); | |
var projection = d3.geo.mercator() | |
.center([-122.41, 37.79]) | |
.scale((1 << 23) / 2 / Math.PI) | |
.translate([width / 2, height / 2]); | |
var path = d3.geo.path() | |
.projection(projection); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height) | |
.call(renderTiles, "highroad") | |
.call(renderTiles, "buildings"); | |
function renderTiles(svg, type) { | |
svg.append("g") | |
.attr("class", type) | |
.selectAll("g") | |
.data(tiler | |
.scale(projection.scale() * 2 * Math.PI) | |
.translate(projection([0, 0]))) | |
.enter().append("g") | |
.each(function(d) { | |
var g = d3.select(this); | |
d3.json("http://" + ["a", "b", "c"][(d[0] * 31 + d[1]) % 3] + ".tile.openstreetmap.us/vectiles-" + type + "/" + d[2] + "/" + d[0] + "/" + d[1] + ".json", function(error, json) { | |
g.selectAll("path") | |
.data(json.features.sort(function(a, b) { return a.properties.sort_key - b.properties.sort_key; })) | |
.enter().append("path") | |
.attr("class", function(d) { return d.properties.kind; }) | |
.attr("d", path); | |
}); | |
}); | |
} | |
</script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment