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@ramiroaznar
Last active July 22, 2016 08:32
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Stacking Points at Street Level with CartoDB.js
<!DOCTYPE html>
<html>
<head>
<title>Stacking Points with 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 {
width:100%;
height:100%;
padding: 0;
margin: 0;
}
.cartodb-tooltip{
width: 300px;
max-width: none!important;
border-radius: 25px;
}
div.cartodb-tooltip-content-wrapper{
padding: 10px;
color: #000;
max-width:none;
background-color: white;
}
div.cartodb-tooltip-content-wrapper img{
width: 100px;
position: relative;
left: 70px;
}
</style>
</head>
<body>
<div id='map'></div>
<script type="text/SQL" id="sql_template">
WITH
m AS (
SELECT array_agg(cartodb_id) id_list, the_geom_webmercator, ST_Y(the_geom_webmercator) y
FROM ramirocartodb.overlapping_points
GROUP BY the_geom_webmercator
ORDER BY y DESC
),
f AS (
SELECT generate_series(1, array_length(id_list,1)) p, unnest(id_list) cartodb_id, the_geom_webmercator
FROM m
)
SELECT ST_Translate(f.the_geom_webmercator,0,f.p*50) the_geom_webmercator, f.cartodb_id, q.city, q.country
FROM f, ramirocartodb.overlapping_points q
WHERE f.cartodb_id = q.cartodb_id
</script>
<script type="text/javascript">
function main() {
var map;
// center and zoom level
var options = {
zoomControl: false,
center: [40.42, -3.70],
zoom: 14,
};
var map = new L.Map('map', options);
L.tileLayer('http://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png', {
attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, &copy; <a href="http://cartodb.com/attributions">CartoDB</a>'
}).addTo(map);
// add layer
urlLayer = "https://team.cartodb.com/u/ramirocartodb/api/v2/viz/af48f60a-e6a7-11e5-88f8-0e31c9be1b51/viz.json"
cartodb.createLayer(map, urlLayer)
.addTo(map)
.on('done', function(layer) {
// set sql query
var query = $('#sql_template').text();
var subLayerOptions = {
sql: query
}
var sublayer = layer.getSubLayer(0);
layer.getSubLayer(0).set(subLayerOptions);
// tooltip definition with createLayer
sublayer.setInteractivity('cartodb_id, city');
var testTooltip = layer.leafletMap.viz.addOverlay({
type: 'tooltip',
layer: sublayer,
template: '<div class="cartodb-tooltip-content-wrapper"><h3>Id:</h3><p>{{cartodb_id}}</p><h3>City:</h3><p>{{city}}</p></div>',
width: 200,
position: 'bottom|right',
fields: [{ id: 'cartodb_id', city:'city' }]
});
$('body').append(testTooltip.render().el);
});
}
window.onload = main;
</script>
</body>
</html>
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