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d3 + google maps (continents)
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="initial-scale=1.0, user-scalable=no"/> | |
| <style> | |
| html, body, #map { | |
| width: 100%; | |
| height: 100%; | |
| margin: 0; | |
| padding: 0; | |
| } | |
| .regions, .regions svg { | |
| position: absolute; | |
| } | |
| .regions svg { | |
| width: 40px; | |
| height: 40px; | |
| font-size: 10px; | |
| font-family: -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, Cantarell, “Fira Sans”, “Droid Sans”, “Helvetica Neue”, Arial, sans-serif; | |
| } | |
| .regions circle { | |
| fill: #1E8BC3; | |
| } | |
| </style> | |
| <div id="map"></div> | |
| <script src="//maps.google.com/maps/api/js"></script> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| // Create the Google Map… | |
| var map = new google.maps.Map(d3.select("#map").node(), { | |
| zoom: 2, | |
| center: new google.maps.LatLng(0, 0), | |
| mapTypeControl: false | |
| }); | |
| map.setOptions({ | |
| styles: [ | |
| { | |
| "featureType": "water", | |
| "elementType": "geometry", | |
| "stylers": [ | |
| { | |
| "color": "#81CFE0" | |
| }, | |
| { | |
| "lightness": 17 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "landscape", | |
| "elementType": "geometry", | |
| "stylers": [ | |
| { | |
| "color": "#f5f5f5" | |
| }, | |
| { | |
| "lightness": 20 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "road.highway", | |
| "elementType": "geometry.fill", | |
| "stylers": [ | |
| { | |
| "color": "#ffffff" | |
| }, | |
| { | |
| "lightness": 17 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "road.highway", | |
| "elementType": "geometry.stroke", | |
| "stylers": [ | |
| { | |
| "color": "#ffffff" | |
| }, | |
| { | |
| "lightness": 29 | |
| }, | |
| { | |
| "weight": 0.2 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "road.arterial", | |
| "elementType": "geometry", | |
| "stylers": [ | |
| { | |
| "color": "#ffffff" | |
| }, | |
| { | |
| "lightness": 18 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "road.local", | |
| "elementType": "geometry", | |
| "stylers": [ | |
| { | |
| "color": "#ffffff" | |
| }, | |
| { | |
| "lightness": 16 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "poi", | |
| "elementType": "geometry", | |
| "stylers": [ | |
| { | |
| "color": "#f5f5f5" | |
| }, | |
| { | |
| "lightness": 21 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "poi.park", | |
| "elementType": "geometry", | |
| "stylers": [ | |
| { | |
| "color": "#dedede" | |
| }, | |
| { | |
| "lightness": 21 | |
| } | |
| ] | |
| }, | |
| { | |
| "elementType": "labels.text.stroke", | |
| "stylers": [ | |
| { | |
| "visibility": "on" | |
| }, | |
| { | |
| "color": "#ffffff" | |
| }, | |
| { | |
| "lightness": 16 | |
| } | |
| ] | |
| }, | |
| { | |
| "elementType": "labels.text.fill", | |
| "stylers": [ | |
| { | |
| "saturation": 36 | |
| }, | |
| { | |
| "color": "#333333" | |
| }, | |
| { | |
| "lightness": 40 | |
| } | |
| ] | |
| }, | |
| { | |
| "elementType": "labels.icon", | |
| "stylers": [ | |
| { | |
| "visibility": "off" | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "transit", | |
| "elementType": "geometry", | |
| "stylers": [ | |
| { | |
| "color": "#f2f2f2" | |
| }, | |
| { | |
| "lightness": 19 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "administrative", | |
| "elementType": "geometry.fill", | |
| "stylers": [ | |
| { | |
| "color": "#fefefe" | |
| }, | |
| { | |
| "lightness": 20 | |
| } | |
| ] | |
| }, | |
| { | |
| "featureType": "administrative", | |
| "elementType": "geometry.stroke", | |
| "stylers": [ | |
| { | |
| "color": "#dfdfdf" | |
| }, | |
| { | |
| "lightness": 17 | |
| }, | |
| { | |
| "weight": 1.2 | |
| } | |
| ] | |
| }, | |
| { | |
| "elementType": "labels", | |
| "stylers": [ | |
| { | |
| "visibility": "off" | |
| } | |
| ] | |
| } | |
| ] | |
| }) | |
| var data = [ | |
| {label: "Africa", coordinates: [15, 15], projects: 2000}, | |
| {label: "Europe", coordinates: [10, 52], projects: 6102}, | |
| {label: "Asia", coordinates: [85, 50], projects: 1101}, | |
| {label: "North America", coordinates: [-105, 50], projects: 9104}, | |
| {label: "South America", coordinates: [-60, -14], projects: 2105}, | |
| {label: "Oceania", coordinates: [130, -21], projects: 4108}, | |
| ] | |
| var overlay = new google.maps.OverlayView(); | |
| // Add the container when the overlay is added to the map. | |
| overlay.onAdd = function() { | |
| var layer = d3.select(this.getPanes().overlayLayer) | |
| .style('z-index', '9999') | |
| .append("div") | |
| .attr("class", "regions") | |
| // Draw each marker as a separate SVG element. | |
| // We could use a single SVG, but what size would it have? | |
| overlay.draw = function() { | |
| var projection = this.getProjection(), | |
| padding = 10; | |
| var marker = layer.selectAll("svg") | |
| .data(d3.entries(data)) | |
| .each(transform) // update existing markers | |
| .enter().append("svg") | |
| .each(transform) | |
| .attr("class", "marker"); | |
| var containerWidth = 40; | |
| // Add a circle. | |
| marker.append("circle") | |
| .attr("r", 20) | |
| .attr("cx", containerWidth/2) | |
| .attr("cy", containerWidth/2) | |
| .on('mouseover', function() { | |
| alert('hello!') | |
| }); | |
| // Add a label. | |
| marker.append("text") | |
| .attr("x", containerWidth/2) | |
| .attr("y", containerWidth/2 + 5) | |
| .attr('text-anchor', 'middle') | |
| .attr('font-size', '12px') | |
| .attr('fill', 'white') | |
| .text(function(d) { return d.value.projects; }); | |
| function transform(d) { | |
| d = new google.maps.LatLng(d.value.coordinates[1], d.value.coordinates[0]); | |
| d = projection.fromLatLngToDivPixel(d); | |
| return d3.select(this) | |
| .style("left", (d.x - padding) + "px") | |
| .style("top", (d.y - padding) + "px"); | |
| } | |
| }; | |
| }; | |
| // Bind our overlay to the map… | |
| overlay.setMap(map); | |
| </script> |
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