Show data on Google Maps » History » Version 1
Anonymous, 27/05/2015 13:21
| 1 | 1 | Anonymous | h1. Show data on Google Maps |
|---|---|---|---|
| 2 | 1 | Anonymous | |
| 3 | 1 | Anonymous | The following HTML code uses the Google Maps API to display data as Heatmap + Marker. |
| 4 | 1 | Anonymous | Additional information are also provided when the cursor is put on the marker. |
| 5 | 1 | Anonymous | |
| 6 | 1 | Anonymous | <pre><code class="html"> |
| 7 | 1 | Anonymous | <!DOCTYPE html> |
| 8 | 1 | Anonymous | <html> |
| 9 | 1 | Anonymous | <head> |
| 10 | 1 | Anonymous | <meta charset="utf-8"> |
| 11 | 1 | Anonymous | <title>Heatmaps</title> |
| 12 | 1 | Anonymous | <style> |
| 13 | 1 | Anonymous | html, body, #map-canvas { |
| 14 | 1 | Anonymous | height: 100%; |
| 15 | 1 | Anonymous | margin: 0px; |
| 16 | 1 | Anonymous | padding: 0px |
| 17 | 1 | Anonymous | } |
| 18 | 1 | Anonymous | #panel { |
| 19 | 1 | Anonymous | position: absolute; |
| 20 | 1 | Anonymous | top: 5px; |
| 21 | 1 | Anonymous | left: 50%; |
| 22 | 1 | Anonymous | margin-left: -180px; |
| 23 | 1 | Anonymous | z-index: 5; |
| 24 | 1 | Anonymous | background-color: #fff; |
| 25 | 1 | Anonymous | padding: 5px; |
| 26 | 1 | Anonymous | border: 1px solid #999; |
| 27 | 1 | Anonymous | } |
| 28 | 1 | Anonymous | </style> |
| 29 | 1 | Anonymous | <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&signed_in=true&libraries=visualization&sensor=true"></script> |
| 30 | 1 | Anonymous | <script> |
| 31 | 1 | Anonymous | |
| 32 | 1 | Anonymous | // This example creates a heatmap + marker on the map, over the IAS |
| 33 | 1 | Anonymous | var map, pointarray, heatmap; |
| 34 | 1 | Anonymous | |
| 35 | 1 | Anonymous | var citymap = {}; |
| 36 | 1 | Anonymous | |
| 37 | 1 | Anonymous | citymap['IAS'] = { |
| 38 | 1 | Anonymous | title: 'IAS', |
| 39 | 1 | Anonymous | center: new google.maps.LatLng(48.698972, 2.174751), |
| 40 | 1 | Anonymous | visits: 1, |
| 41 | 1 | Anonymous | city: 'Orsay', |
| 42 | 1 | Anonymous | country: 'France' |
| 43 | 1 | Anonymous | }; |
| 44 | 1 | Anonymous | |
| 45 | 1 | Anonymous | // Create the heatmap gradient with five points |
| 46 | 1 | Anonymous | var ipData = [ |
| 47 | 1 | Anonymous | new google.maps.LatLng(48.698972, 2.174751), |
| 48 | 1 | Anonymous | new google.maps.LatLng(48.698972, 2.174751), |
| 49 | 1 | Anonymous | new google.maps.LatLng(48.698972, 2.174751), |
| 50 | 1 | Anonymous | new google.maps.LatLng(48.698972, 2.174751), |
| 51 | 1 | Anonymous | new google.maps.LatLng(48.698972, 2.174751), |
| 52 | 1 | Anonymous | ]; |
| 53 | 1 | Anonymous | |
| 54 | 1 | Anonymous | function initialize() { |
| 55 | 1 | Anonymous | |
| 56 | 1 | Anonymous | // Centering and type of shown map |
| 57 | 1 | Anonymous | var mapOptions = { |
| 58 | 1 | Anonymous | zoom: 7, |
| 59 | 1 | Anonymous | center: new google.maps.LatLng(48.698972, 2.174751), |
| 60 | 1 | Anonymous | mapTypeId: google.maps.MapTypeId.SATELLITE //TERRAIN |
| 61 | 1 | Anonymous | }; |
| 62 | 1 | Anonymous | |
| 63 | 1 | Anonymous | map = new google.maps.Map(document.getElementById('map-canvas'), |
| 64 | 1 | Anonymous | mapOptions); |
| 65 | 1 | Anonymous | |
| 66 | 1 | Anonymous | // Construct the marker for each value in citymap (just one, in this case). |
| 67 | 1 | Anonymous | for (var city in citymap) { |
| 68 | 1 | Anonymous | var contentString = citymap[city].title+' ('+citymap[city].city+')'+': '+citymap[city].visits; |
| 69 | 1 | Anonymous | var populationOptions = { |
| 70 | 1 | Anonymous | map: map, |
| 71 | 1 | Anonymous | position: citymap[city].center, |
| 72 | 1 | Anonymous | title: contentString, |
| 73 | 1 | Anonymous | icon: 'http://szcluster-db.ias.u-psud.fr/sitools/upload/locMarker_redCircle.gif', |
| 74 | 1 | Anonymous | }; |
| 75 | 1 | Anonymous | |
| 76 | 1 | Anonymous | // Add the circle for this city to the map. |
| 77 | 1 | Anonymous | cityCircle = new google.maps.Marker(populationOptions); //Marker |
| 78 | 1 | Anonymous | |
| 79 | 1 | Anonymous | } |
| 80 | 1 | Anonymous | |
| 81 | 1 | Anonymous | var pointArray = new google.maps.MVCArray(ipData); |
| 82 | 1 | Anonymous | |
| 83 | 1 | Anonymous | heatmap = new google.maps.visualization.HeatmapLayer({ |
| 84 | 1 | Anonymous | data: pointArray, |
| 85 | 1 | Anonymous | dissipating: 1, |
| 86 | 1 | Anonymous | opacity: 1, |
| 87 | 1 | Anonymous | maxIntensity:5, |
| 88 | 1 | Anonymous | radius: 15 |
| 89 | 1 | Anonymous | }); |
| 90 | 1 | Anonymous | |
| 91 | 1 | Anonymous | heatmap.setMap(map); |
| 92 | 1 | Anonymous | } |
| 93 | 1 | Anonymous | |
| 94 | 1 | Anonymous | function toggleHeatmap() { |
| 95 | 1 | Anonymous | heatmap.setMap(heatmap.getMap() ? null : map); |
| 96 | 1 | Anonymous | } |
| 97 | 1 | Anonymous | |
| 98 | 1 | Anonymous | function changeGradient() { |
| 99 | 1 | Anonymous | var gradient = [ |
| 100 | 1 | Anonymous | 'rgba(0, 255, 255, 0)', |
| 101 | 1 | Anonymous | 'rgba(0, 255, 255, 1)', |
| 102 | 1 | Anonymous | 'rgba(0, 191, 255, 1)', |
| 103 | 1 | Anonymous | 'rgba(0, 127, 255, 1)', |
| 104 | 1 | Anonymous | // 'rgba(0, 63, 255, 1)', |
| 105 | 1 | Anonymous | // 'rgba(0, 0, 255, 1)', |
| 106 | 1 | Anonymous | // 'rgba(0, 0, 223, 1)', |
| 107 | 1 | Anonymous | // 'rgba(0, 0, 191, 1)', |
| 108 | 1 | Anonymous | // 'rgba(0, 0, 159, 1)', |
| 109 | 1 | Anonymous | // 'rgba(0, 0, 127, 1)', |
| 110 | 1 | Anonymous | // 'rgba(63, 0, 91, 1)', |
| 111 | 1 | Anonymous | // 'rgba(127, 0, 63, 1)', |
| 112 | 1 | Anonymous | 'rgba(191, 0, 31, 1)', |
| 113 | 1 | Anonymous | // 'rgba(255, 0, 0, 1)' |
| 114 | 1 | Anonymous | ] |
| 115 | 1 | Anonymous | heatmap.set('gradient', heatmap.get('gradient') ? null : gradient); |
| 116 | 1 | Anonymous | } |
| 117 | 1 | Anonymous | |
| 118 | 1 | Anonymous | function changeRadius() { |
| 119 | 1 | Anonymous | heatmap.set('radius', heatmap.get('radius') ? null : 10); |
| 120 | 1 | Anonymous | } |
| 121 | 1 | Anonymous | |
| 122 | 1 | Anonymous | function changeOpacity() { |
| 123 | 1 | Anonymous | heatmap.set('opacity', heatmap.get('opacity') ? 0.8 : 1); |
| 124 | 1 | Anonymous | } |
| 125 | 1 | Anonymous | |
| 126 | 1 | Anonymous | google.maps.event.addDomListener(window, 'load', initialize); |
| 127 | 1 | Anonymous | |
| 128 | 1 | Anonymous | </script> |
| 129 | 1 | Anonymous | </head> |
| 130 | 1 | Anonymous | |
| 131 | 1 | Anonymous | <body> |
| 132 | 1 | Anonymous | <div id="panel"> |
| 133 | 1 | Anonymous | <button onclick="toggleHeatmap()">Toggle Heatmap</button> |
| 134 | 1 | Anonymous | <button onclick="changeGradient()">Change gradient</button> |
| 135 | 1 | Anonymous | <button onclick="changeRadius()">Change radius</button> |
| 136 | 1 | Anonymous | <button onclick="changeOpacity()">Change opacity</button> |
| 137 | 1 | Anonymous | </div> |
| 138 | 1 | Anonymous | <div id="map-canvas"></div> |
| 139 | 1 | Anonymous | </body> |
| 140 | 1 | Anonymous | </html> |
| 141 | 1 | Anonymous | </code></pre> |
| 142 | 1 | Anonymous | |
| 143 | 1 | Anonymous | The browser will display the HTML in this way: |
| 144 | 1 | Anonymous | |
| 145 | 1 | Anonymous | !dataOnMaps.png! |