Created
June 28, 2012 17:10
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Geographic d3.js bubbles
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| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> | |
| <title>France bubbling</title> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.7.4"></script> | |
| <style type="text/css"> | |
| svg { | |
| width: 900px; | |
| height: 500px; | |
| border: solid 1px #ccc; | |
| background: #eee; | |
| } | |
| line { | |
| stroke: brown; | |
| stroke-dasharray: 4,2; | |
| } | |
| path { | |
| fill: #ccc; | |
| stroke: #fff; | |
| } | |
| div { | |
| width: 900px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <h3>Mercator Projection</h3> | |
| <script type="text/javascript"> | |
| width= 900; | |
| height= 500; | |
| //focusing france on SVG | |
| xy=d3.geo.mercator().translate([453,1872]).scale(11000) | |
| path=d3.geo.path().projection(xy); | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .append("g") | |
| .attr("id", "polygons"); | |
| d3.json('regions.json', function(collection) { | |
| //console.warn(collection.features) | |
| d3.select("#polygons") | |
| .selectAll("path") | |
| .data(collection.features) | |
| .enter().append("path") | |
| .attr("d", d3.geo.path().projection(xy)); | |
| }); | |
| d3.json('datapublishers.json', function(data) { | |
| var force = d3.layout.force() | |
| // .gravity(0) | |
| .charge(-0.7) | |
| .nodes(data.features) | |
| .size([0, 0]) | |
| .start(); | |
| var to_bubble=[] | |
| //this function could be used to filter circles by city parameter | |
| filter_by_city =function (city) | |
| { | |
| data.features.forEach(function(data) { | |
| if (data.properties.city==city) | |
| { | |
| to_bubble.push(data) | |
| } | |
| }) | |
| return to_bubble; | |
| } | |
| var node = d3.select("svg").selectAll("g") | |
| .data(data.features) //filter_by_city('Paris') could be used here, assigning later a more negative charge but its not the ideal solution at all | |
| .enter().append("g") | |
| .attr("id", function(d){ return d.properties.city;}) | |
| node.append("circle") | |
| .attr("transform", function(d) { | |
| return "translate(" + xy(d.geometry.coordinates) + ")"; }) | |
| .attr("id", function(d){ return d.id;}) | |
| .attr("class", "node") | |
| .attr('fill','blue') | |
| .attr('opacity',0.5) | |
| .attr('r', function(d) { | |
| return d.properties.num_collections*5}) | |
| .call(force.drag); | |
| force.on("tick", function() { | |
| node.attr( | |
| "transform", | |
| function(d) { return "translate(" + d.x + "," + d.y + ")"; } | |
| ); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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