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CartoDB + D3 Bubble Map
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> | |
| <title>CartoDB + D3 Bubble Map</title> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://libs.cartocdn.com/cartodb.js/v2/cartodb.js"></script> | |
| <style type="text/css"> | |
| body{ | |
| background:white; | |
| } | |
| svg { | |
| width: 960px; | |
| height: 500px; | |
| background: #4a8dcb; | |
| } | |
| svg:active { | |
| cursor: move; | |
| cursor: -moz-grabbing; | |
| cursor: -webkit-grabbing; | |
| } | |
| .globe { | |
| fill: #4a8dcb; | |
| } | |
| #first_layer path { | |
| fill-opacity:0.8; | |
| fill: #222; | |
| stroke: #ddd; | |
| stroke-width:0.5px; | |
| stroke-linecap: round; | |
| stroke-linejoin: round; | |
| } | |
| #second_layer circle { | |
| cursor: pointer; | |
| fill-opacity:1; | |
| fill: white; | |
| stroke-width:0.1px; | |
| stroke:black; | |
| stroke-linecap: round; | |
| stroke-linejoin: round; | |
| } | |
| .halo { | |
| font-weight: 700; | |
| fill: none; | |
| stroke: white; | |
| stroke-width:4px; | |
| font-size: 14px; | |
| } | |
| .text { | |
| font-weight: 700; | |
| fill: #777; | |
| stroke: none; | |
| stroke-width:0px; | |
| font-size: 14px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var first_layer = 'd3_world_borders'; | |
| var second_layer = 'd3_populated_places'; | |
| var sql = new cartodb.SQL({ user: 'viz2', format: 'geojson', dp: 5}); | |
| // Define our SVG element outside our SQL functions | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .call(d3.behavior.zoom() | |
| .on("zoom", redraw)) | |
| .append("g"); | |
| // Our projection. | |
| var xy = d3.geo.mercator().scale(5); | |
| xy.scale(2500); | |
| xy.center([40,30]); | |
| svg.append("g").attr("id", "first_layer"); | |
| svg.append("g").attr("id", "second_layer"); | |
| var path = d3.geo.path(); | |
| sql.execute("SELECT ST_Simplify(the_geom,0.01) as the_geom FROM {{table_name}} WHERE the_geom IS NOT NULL", {table_name: first_layer}) | |
| .done(function(collection) { | |
| svg.select("#first_layer") | |
| .selectAll("path") | |
| .data(collection.features) | |
| .enter().append("path") | |
| .attr("d", path.projection(xy)); | |
| }) | |
| .error(function(errors) { | |
| // console.log('Errors! Oh no!') | |
| }); | |
| sql.execute("SELECT the_geom, 4/sqrt(scalerank) as pop, adm1name as name FROM {{table_name}} WHERE the_geom IS NOT NULL AND pop_max > 10^5", {table_name: second_layer}) | |
| .done(function(collection) { | |
| var label = svg.append("sgv:g") | |
| svg.select("#second_layer") | |
| .selectAll("path") | |
| .data(collection.features) | |
| .enter() | |
| .append("circle") | |
| .attr("r", function(d){ return d.properties.pop }) | |
| .attr("cy", function(){ return xy([0,Math.random()*180.0-90])[1]}) | |
| .attr("cx", function(){ return xy([Math.random()*360.0-180,0])[0]}) | |
| .attr("d", path.projection(xy)) | |
| .on("mousedown", function(t){ | |
| d3.selectAll("text").remove(); | |
| label.append("svg:text") | |
| .attr("x", xy(t.geometry.coordinates)[0]) | |
| .attr("y", xy(t.geometry.coordinates)[1]) | |
| .attr("class", "halo") | |
| .text(t.properties.name); | |
| label.append("svg:text") | |
| .attr("x", xy(t.geometry.coordinates)[0]) | |
| .attr("y", xy(t.geometry.coordinates)[1]) | |
| .attr("class", "text") | |
| .text(t.properties.name); | |
| }) | |
| .on("mouseout", function(){ | |
| }) | |
| .transition() | |
| .attr("cy", function(d){ return xy(d.geometry.coordinates)[1] }) | |
| .attr("cx", function(d){ return xy(d.geometry.coordinates)[0] }) | |
| .duration(function(d){ return 800*d.properties.pop }) | |
| .delay(100) | |
| }) | |
| .error(function(errors) { | |
| // console.log('Errors! Oh no!') | |
| }); | |
| function redraw() { | |
| svg.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")"); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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