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Leaflet.js Tips, Step 4 (filter geojson markers)
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| { | |
| "type": "FeatureCollection", | |
| "features": [ | |
| { | |
| "type": "Feature", | |
| "properties": { | |
| "Name": "Gimme! Coffee", | |
| "BusType": "Cafe", | |
| "Description": "Gimme espresso bars are found in New York City and Upstate New York." | |
| }, | |
| "geometry": { | |
| "type": "Point", | |
| "coordinates": [-76.499491, 42.444508] | |
| } | |
| }, { | |
| "type": "Feature", | |
| "properties": { | |
| "Name": "ZevRoss Spatial Analysis", | |
| "BusType": "Data analysis and mapping", | |
| "Description": "Specializes in spatial and environmental data analysis and statistics, geographic information systems and custom data design." | |
| }, | |
| "geometry": { | |
| "type": "Point", | |
| "coordinates": [-76.4958259, 42.440258] | |
| } | |
| }, { | |
| "type": "Feature", | |
| "properties": { | |
| "Name": "Argos Inn", | |
| "BusType": "Inn and Bar", | |
| "Description": "Inn and cocktail bar in a beautifully restored historic mansion." | |
| }, | |
| "geometry": { | |
| "type": "Point", | |
| "coordinates": [-76.492543, 42.439401] | |
| } | |
| } | |
| ] | |
| } |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7/leaflet.css" /> | |
| <script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.js"></script> | |
| <script src='https://api.tiles.mapbox.com/mapbox.js/v1.6.4/mapbox.js'></script> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> | |
| <style type="text/css"> | |
| #map { | |
| width: 600px; | |
| height: 400px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <script type="text/javascript"> | |
| var mapboxTiles = L.tileLayer('https://{s}.tiles.mapbox.com/v3/examples.map-i87786ca/{z}/{x}/{y}.png', { | |
| attribution: '<a href="http://www.mapbox.com/about/maps/" target="_blank">Terms & Feedback</a>' | |
| }); | |
| var map = L.map('map') | |
| .addLayer(mapboxTiles) | |
| .setView([42.444508, -76.499491], 12); | |
| var promise = $.getJSON("businesses.json"); | |
| promise.then(function(data) { | |
| var allbusinesses = L.geoJson(data); | |
| // THIS IS NEW | |
| var cafes = L.geoJson(data, { | |
| filter: function(feature, layer) { | |
| return feature.properties.BusType == "Cafe"; | |
| } | |
| }); | |
| var others = L.geoJson(data, { | |
| filter: function(feature, layer) { | |
| return feature.properties.BusType != "Cafe"; | |
| } | |
| }); | |
| map.fitBounds(allbusinesses.getBounds(), { | |
| padding: [50, 50] | |
| }); | |
| // THIS IS NEW | |
| cafes.addTo(map) | |
| others.addTo(map) | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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