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April 23, 2019 13:49
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viewportFeatures example
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Viewport Features Example | CARTO</title> | |
<meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
<meta charset="UTF-8"> | |
<script src="https://libs.cartocdn.com/carto-vl/v1.2.4/carto-vl.min.js"></script> | |
<script src="https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.js"></script> | |
<link href="https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.css" rel="stylesheet" /> | |
<style> | |
html, | |
body { | |
margin: 0; | |
} | |
.toolbox { | |
position: absolute; | |
z-index: 2; | |
top: 30px; | |
right: 30px; | |
} | |
button { | |
border-radius: 5px; | |
border: 1px solid silver; | |
padding: 1em; | |
box-shadow: none; | |
font-size: 16px; | |
} | |
#map { | |
position: absolute; | |
width: 100%; | |
height: 100%; | |
z-index: 1; | |
} | |
</style> | |
</head> | |
<body> | |
<div id="map"></div> | |
<aside class="toolbox"> | |
<div class="box"> | |
<button id="change-color">Change Country Color</button> | |
</div> | |
</aside> | |
<div id="loader"> | |
<div class="CDB-LoaderIcon CDB-LoaderIcon--big"> | |
<svg class="CDB-LoaderIcon-spinner" viewBox="0 0 50 50"> | |
<circle class="CDB-LoaderIcon-path" cx="25" cy="25" r="20" fill="none"></circle> | |
</svg> | |
</div> | |
</div> | |
<script> | |
const map = new mapboxgl.Map({ | |
container: 'map', | |
style: carto.basemaps.voyager, | |
center: [0, 30], | |
zoom: 1.5, | |
scrollZoom: false | |
}); | |
const nav = new mapboxgl.NavigationControl({ | |
showCompass: false | |
}); | |
map.addControl(nav, 'top-left'); | |
// Define user | |
carto.setDefaultAuth({ | |
username: 'cartovl', | |
apiKey: 'default_public' | |
}); | |
// Define layer | |
const source = new carto.source.Dataset('world_borders'); | |
const viz = new carto.Viz(` | |
@list: viewportFeatures($name) | |
color: opacity(BlueViolet, 0.5) | |
strokeColor: opacity(BlueViolet, 0.8) | |
`); | |
const layer = new carto.Layer('layer', source, viz); | |
layer.addTo(map, 'watername_ocean'); | |
layer.on('loaded', hideLoader); | |
const changeColorButton$ = document.getElementById('change-color'); | |
changeColorButton$.addEventListener('click', () => { | |
const features = viz.variables.list.value; | |
const featureSpain = features.find(feature => feature.properties.name === 'Spain'); | |
if (featureSpain) { | |
featureSpain.color.blendTo('red'); | |
} | |
}); | |
function hideLoader() { | |
document.getElementById('loader').style.opacity = '0'; | |
} | |
</script> | |
</body> | |
</html> |
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