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adds data peek example

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Francisco Dans 2015-03-11 18:56:37 +01:00
parent 3ead777645
commit 4fea2e32c1
1 changed files with 95 additions and 0 deletions
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<html>
<link rel="stylesheet" href="vendor/leaflet.css" />
<style>
#map, html, body {
width: 100%; height: 100%; padding: 0; margin: 0;
}
</style>
<body>
<div id="map"></div>
<script src="vendor/leaflet.js"></script>
<script src="../dist/torque.full.uncompressed.js"></script>
<script>
// define the torque layer style using cartocss
var CARTOCSS = [
'Map {',
'-torque-time-attribute: "cartodb_id";',
'-torque-aggregation-function: "count(cartodb_id)";',
'-torque-frame-count: 1;',
'-torque-animation-duration: 15;',
'-torque-resolution: 2',
'}',
'#layer {',
'image-filters: colorize-alpha(blue, cyan, lightgreen, yellow , orange, red);',
'marker-file: url(http://s3.amazonaws.com/com.cartodb.assets.static/alphamarker.png);',
'marker-fill-opacity: 0.4;',
'marker-width: 35;',
'}'
].join('\n');
var map = new L.Map('map', {
zoomControl: true,
center: [40, 0],
zoom: 3
});
L.tileLayer('http://{s}.api.cartocdn.com/base-dark/{z}/{x}/{y}.png', {
attribution: 'CartoDB'
}).addTo(map);
var torqueLayer = new L.TorqueLayer({
user : 'fdansv',
table : 'snow',
cartocss: CARTOCSS
});
torqueLayer.addTo(map);
torqueLayer.play();
var rect = document.createElement("div");
var size = 50;
rect.setAttribute('style', "position:absolute; background-color: #fff; width: 100px; height: 30px;");
document.getElementById("map").appendChild(rect);
var curBounds = [];
var curRect;
var lastX =0, lastY=0;
var calc = function(e){
var x = e.clientX || lastX;
var y = e.clientY || lastY;
lastX = x;
lastY = y;
rect.style.display = "block";
rect.style.left = x + 20;
rect.style.top = y - 20;
rect.style.padding = 10;
var val = torqueLayer.getValueForBBox(x-size/2, y-size/2, size, size);
rect.textContent = val;
var nw = map.containerPointToLatLng([x-size/2, y-size/2]);
var se = map.containerPointToLatLng([x+size/2, y+size/2]);
curBounds = [[nw.lat, nw.lng], [se.lat, se.lng]];
if(curRect){
map.removeLayer(curRect);
}
curRect = L.rectangle(curBounds, {color: "#ff7800", weight: 1}).addTo(map);
};
document.onmousemove = calc;
document.onmouseout = function(e){
if (e.toElement == null && e.relatedTarget == null) {
rect.style.display = "none";
}
};
document.onkeypress = function(e){
if(e.keyCode === 97){
size +=4;
}
if(e.keyCode === 115){
size -=4;
}
calc(e);
}
</script>
</body>
</html>