Created
September 7, 2014 10:29
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defs usage d3/leaflet
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>d3.js with leaflet.js</title> | |
| <link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7/leaflet.css"/> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://cdn.leafletjs.com/leaflet-0.7/leaflet.js"></script> | |
| <script src="http://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.js"></script> | |
| <style> | |
| html, body, #map{ | |
| min-width: 500px; | |
| min-height: 500px; | |
| width: 100%; | |
| height: 100%; | |
| margin: 0px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <script type="text/javascript"> | |
| var circles = [ | |
| [52.3667,4.95],[52.3667,4.9],[52.3667,4.85],[52.3667,4.8], | |
| [52.3867,4.95],[52.3867,4.9],[52.3867,4.85],[52.3867,4.8] | |
| ]; | |
| var circle_data = [ | |
| [10,70,40], | |
| [40,80,30], | |
| [65,90,20], | |
| [-20,85,20] | |
| ]; | |
| var map = L.map('map').setView([52.3667,4.90000], 11); | |
| L.tileLayer( | |
| 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', { | |
| attribution: '© + Openstreetmap Contributors', | |
| maxZoom: 18, | |
| }).addTo(map); | |
| map._initPathRoot(); | |
| var svg = d3.select("#map").select("svg"), | |
| g = svg.append("g"); | |
| var cloudDef = svg.append('defs').append("g").attr("id","cloud").style("opacity", 0.5); | |
| cloudDef.selectAll("circle").data(circle_data).enter() | |
| .append("circle") | |
| .attr("cx", function(d){return d[0]}) | |
| .attr("cy", function(d){return d[1]}) | |
| .attr("r", function(d){return d[2]}) | |
| .style("fill", "white"); | |
| circles.forEach(function(d) { | |
| d.LatLng = new L.LatLng(d[0],d[1]) | |
| }); | |
| var links = _.rest(circles).map( function(d){ | |
| return [_.first(circles), d ] | |
| }) | |
| var feature = g.selectAll("circle") | |
| .data(circles) | |
| .enter() | |
| .append("g") | |
| .attr("class","cloud") | |
| .attr("transform", function(d){ | |
| return "translate(" + d +")" | |
| }) | |
| .attr("class","cloud") | |
| .append("use").attr("xlink:href","#cloud") | |
| map.on("viewreset", update); | |
| update(); | |
| function update(){ | |
| feature.attr("transform", | |
| function(d) { | |
| return "translate("+ | |
| map.latLngToLayerPoint(d.LatLng).x +","+ | |
| map.latLngToLayerPoint(d.LatLng).y +")"; | |
| } | |
| ) | |
| } | |
| function move(duration){ | |
| d3.selectAll("g.cloud").transition().attr("transform", function(d){ | |
| return "translate(" +100*Math.random() + "," + 100*Math.random() +")" | |
| }).duration(duration).ease("sin") | |
| } | |
| setInterval( function(){ move(1000) }, 1000 ) | |
| </script> | |
| </body> | |
| </html> |
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