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D3 GeoJSON labels
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| 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}; |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script data-require="d3@3.5.3" data-semver="3.5.3" src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="d3.geo.tile.min.js"></script> | |
| <link rel="stylesheet" href="style.css" /> | |
| <style> | |
| svg { | |
| font-family: sans-serif; | |
| } | |
| path.feature { | |
| fill: rgba(255, 0, 0, 0.5); | |
| } | |
| path.feature:hover { | |
| fill: rgba(255, 140, 0, 0.5); | |
| cursor: zoom-in; | |
| } | |
| text.halo { | |
| opacity: 0.7; | |
| stroke: #fff; | |
| stroke-width: 5px; | |
| } | |
| stroke-miterlimit: 1; | |
| </style> | |
| </head> | |
| <body> | |
| <h1>Hello Plunker!</h1> | |
| <div id="vis">fdfdf</div> | |
| <script src="script.js"></script> | |
| </body> | |
| </html> |
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| // Code goes here | |
| var width = 400, | |
| height = 300; | |
| var tile = d3.geo.tile() | |
| .size([width, height]); | |
| var projection = d3.geo.mercator(); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var raster = svg.append("g"); | |
| var features = svg.append('g').attr('class', 'features'); | |
| var labels = svg.append('g').attr('class', 'labels'); | |
| d3.json('169_4326.json', function(err, json) { | |
| if (err) { | |
| throw err; | |
| } | |
| projection | |
| .scale(1) | |
| .translate([0, 0]); | |
| // compute scale and translate given the data extent | |
| var b = path.bounds(json), | |
| s = .95 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height), | |
| t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2]; | |
| projection | |
| .scale(s) | |
| .translate(t); | |
| features.selectAll("path").data(json.features).enter().append("path") | |
| .attr("class", "feature") | |
| .attr("d", path) | |
| .style("stroke-width", "1") | |
| .style("stroke", "black") | |
| .append | |
| labels.selectAll('.label').data(json.features).enter().append('text') | |
| .attr("class", "halo") | |
| .attr('transform', function(d) { | |
| return "translate(" + path.centroid(d) + ")"; | |
| }) | |
| .style('text-anchor', 'middle') | |
| .text(function(d) { | |
| return d.properties.name | |
| }); | |
| labels.selectAll('.label').data(json.features).enter().append('text') | |
| .attr("class", "label") | |
| .attr('transform', function(d) { | |
| return "translate(" + path.centroid(d) + ")"; | |
| }) | |
| .style('text-anchor', 'middle') | |
| .text(function(d) { | |
| return d.properties.name | |
| }); | |
| // raster tiles | |
| var zoom = d3.behavior.zoom() | |
| .scale(projection.scale() * 2 * Math.PI) | |
| .scaleExtent([1 << 11, 1 << 14]) | |
| .translate(t) | |
| var tiles = tile | |
| .scale(zoom.scale()) | |
| .translate(zoom.translate()) | |
| (); | |
| var image = raster | |
| .attr("transform", "scale(" + tiles.scale + ")translate(" + tiles.translate + ")") | |
| .selectAll("image") | |
| .data(tiles, function(d) { return d; }); | |
| image.exit() | |
| .remove(); | |
| image.enter().append("image") | |
| .attr("xlink:href", function(d) { return "http://" + ["a", "b", "c", "d"][Math.random() * 4 | 0] + ".tiles.mapbox.com/v3/examples.map-i86nkdio/" + d[2] + "/" + d[0] + "/" + d[1] + ".png"; }) | |
| .attr("width", 1) | |
| .attr("height", 1) | |
| .attr("x", function(d) { return d[0]; }) | |
| .attr("y", function(d) { return d[1]; }); | |
| }); |
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