CartoDB/Leaflet map that adapts map dimensions (height) and zoom level based on map width. Open in new window and resize to view responsiveness.
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July 19, 2017 12:34
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Responsive map with Cartodb/Leaflet
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Responsive map</title> | |
| <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> | |
| <link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/3.15/themes/css/cartodb.css" /> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <!-- include cartodb.js library --> | |
| <script src="http://libs.cartocdn.com/cartodb.js/v3/3.15/cartodb.js"></script> | |
| <script> | |
| function main() { | |
| var bigmapheight = 650; | |
| var smallmapheight = 300; | |
| var mapbreakwidth = 720; | |
| var highzoom = 8; | |
| var lowzoom = 7; | |
| var initzoom; | |
| var vizjson = 'https://mediafin.cartodb.com/api/v2/viz/6a800846-5607-11e5-b2d0-0e4fddd5de28/viz.json'; | |
| //Set initial mapheight, based on the calculated width of the map container | |
| if ($("#map").width() > mapbreakwidth) { | |
| initzoom = highzoom; | |
| $("#map").height(bigmapheight); | |
| } | |
| else { | |
| initzoom = lowzoom; | |
| $("#map").height(smallmapheight); | |
| }; | |
| var map = new L.Map('map', { | |
| center: [50.45,4.45], | |
| zoom: initzoom | |
| }); | |
| L.tileLayer('http://tile.stamen.com/toner/{z}/{x}/{y}.png', { | |
| attribution: 'Stamen' | |
| }).addTo(map); | |
| cartodb.createLayer(map, vizjson) | |
| .addTo(map) | |
| .on('done', function(layer) { | |
| layer.setInteraction(true); | |
| layer.on('error', function(err) { | |
| cartodb.log.log('error: ' + err); | |
| }); | |
| }) | |
| .on('error', function() { | |
| cartodb.log.log("some error occurred"); | |
| }); | |
| //Use Leaflets resize event to set new map height and zoom level | |
| map.on('resize', function(e) { | |
| if (e.newSize.x < mapbreakwidth) { | |
| map.setZoom(lowzoom); | |
| $("#map").css('height', smallmapheight); | |
| }; | |
| if (e.newSize.x > mapbreakwidth) { | |
| map.setZoom(highzoom); | |
| $("#map").css('height', bigmapheight); | |
| $("#map").css('height', bigmapheight); | |
| }; | |
| }); | |
| } | |
| // you could use $(window).load(main); | |
| window.onload = main; | |
| </script> | |
| </body> | |
| </html> |
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CartoDB map that adapts map dimensions (height) and zoom level based on map width.