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sla-training_session2:changing SQL query
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Changing SQL query| CartoDB.js</title> | |
| <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> | |
| <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> | |
| <link rel="shortcut icon" href="http://cartodb.com/assets/favicon.ico" /> | |
| <link rel="stylesheet" href="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/themes/css/cartodb.css" /> | |
| <script src="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/cartodb.js"></script> | |
| <style> | |
| html, body, #map { | |
| height: 100%; | |
| padding: 0; | |
| margin: 0; | |
| } | |
| #map{position:relative;} | |
| #bar{z-index: 2; position:absolute; top:0; right:0; margin:4px;} | |
| #boton{width:128px; height:64px;} | |
| </style> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <div id="bar"> | |
| <button id="mostPop">20 most populated places</button> | |
| <button id="lessPop">20 less populated places</button> | |
| </div> | |
| <script> | |
| function main() { | |
| map = L.map('map', { | |
| zoomControl: true, | |
| center: [36,0], | |
| zoom:2 | |
| }); | |
| //add tile layer from STAMEN | |
| L.tileLayer('http://{s}.tile.stamen.com/toner/{z}/{x}/{y}.png', { | |
| attribution:'Stamen and CartoDB attribution' | |
| }).addTo(map); | |
| //add CartoDB layer | |
| cartodb.createLayer(map, { | |
| user_name: 'trainer02', | |
| maps_api_template: "https://sla-training.cartodb.solutions:443/user/{user}", | |
| sql_api_template: "https://sla-training.cartodb.solutions:443/user/{user}", | |
| tiler_protocol: "http", | |
| tiler_domain: "sla-training.cartodb.solutions", | |
| tiler_port: "80", | |
| filter: "mapnik", | |
| type: 'cartodb', | |
| sublayers:[{ | |
| sql:'SELECT * FROM ne_10m_populated_places_simple', | |
| cartocss:'#ne_10m_populated_places_simple {marker-fill:#f60;}', | |
| }] | |
| },{https:true}).addTo(map) | |
| .on('done', function(layer){ | |
| sublayer=layer.getSubLayer(0); | |
| $('#mostPop').on('click', function(){ | |
| sublayer.setSQL('SELECT * FROM ne_10m_populated_places_simple ORDER BY pop_max DESC LIMIT 20;'); | |
| }) | |
| $('#lessPop').on('click', function(){ | |
| sublayer.setSQL('SELECT * FROM ne_10m_populated_places_simple ORDER BY pop_max ASC LIMIT 20;'); | |
| }) | |
| }); | |
| } | |
| window.onload = main; | |
| </script> | |
| </body> | |
| </html> |
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