49 lines
999 B
JavaScript
49 lines
999 B
JavaScript
goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.layer.Tile');
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goog.require('ol.source.CartoDB');
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goog.require('ol.source.OSM');
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var mapConfig = {
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'layers': [{
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'type': 'cartodb',
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'options': {
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'cartocss_version': '2.1.1',
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'cartocss': '#layer { polygon-fill: #F00; }',
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'sql': 'select * from european_countries_e where area > 0'
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}
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}]
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};
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var cartoDBSource = new ol.source.CartoDB({
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account: 'documentation',
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config: mapConfig
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});
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var map = new ol.Map({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.OSM()
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}),
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new ol.layer.Tile({
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source: cartoDBSource
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})
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],
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target: 'map',
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view: new ol.View({
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center: [0, 0],
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zoom: 2
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})
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});
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function setArea(n) {
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mapConfig.layers[0].options.sql =
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'select * from european_countries_e where area > ' + n;
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cartoDBSource.setConfig(mapConfig);
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}
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document.getElementById('country-area').addEventListener('change', function() {
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setArea(this.value);
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});
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