Add visualizer.

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    DOM is my body and JQuery is my blood
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    Unknown to death
    Nor known to life
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    Yet those hands shall never type anything
    So, as I pray, Unlimited Openlayers Works

10 files changed, 1557 insertions, 0 deletions

diff --git a/visualizer/HTTPServer.py b/visualizer/HTTPServer.py
new file mode 100755
index 0000000..e71bef3
--- /dev/null
+++ b/visualizer/HTTPServer.py
@@ -0,0 +1,128 @@
+#!/usr/bin/env python
+
+import os
+import sys
+import urllib
+import SimpleHTTPServer
+import SocketServer
+from cStringIO import StringIO
+
+import h5py
+
+import data
+from data.hdf5 import TaxiDataset
+from visualizer import Vlist, Path
+
+
+visualizer_path = os.path.join(data.path, 'visualizer')
+source_path = os.path.split(os.path.realpath(__file__))[0]
+
+test_data = None
+train_data = None
+
+class VisualizerHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
+    def send_head(self):
+        spath = self.path.split('?')[0]
+        path = spath.split('/')[1:]
+        if len(path) == 1:
+            if path[0] == '':
+                path[0] = 'index.html'
+            file_path = os.path.join(source_path, path[0])
+            return self.send_file(file_path)
+        elif path[0] == 'ls':
+            return self.send_datalist()
+        elif path[0] == 'get':
+            return self.send_file(os.path.join(visualizer_path, spath[5:]))
+        elif path[0] == 'extract':
+            return self.send_extract(spath[9:])
+
+    def send_file(self, file_path):
+        file_path = urllib.unquote(file_path)
+        ctype = self.guess_type(file_path)
+
+        try:
+            f = open(file_path, 'rb')
+        except IOError:
+            self.send_error(404, 'File not found')
+            return None
+        try:
+            self.send_response(200)
+            self.send_header('Content-type', ctype)
+            fs = os.fstat(f.fileno())
+            self.send_header('Content-Length', str(fs[6]))
+            self.send_header('Last-Modified', self.date_time_string(fs.st_mtime))
+            self.end_headers()
+            return f
+        except:
+            f.close()
+            raise
+
+    def send_datalist(self):
+        l = []
+        for path, subs, files in os.walk(visualizer_path):
+            for file in files:
+                mtime = os.stat('%s/%s' % (path, file))[8]
+                l.append('{"path":["%s"],"name":"%s","mtime":%d}' % ('","'.join(path[len(visualizer_path):].split('/')), file, mtime))
+        l.sort()
+        f = StringIO()
+        f.write("[")
+        f.write(','.join(l))
+        f.write("]")
+        length = f.tell()
+        f.seek(0)
+        self.send_response(200)
+        encoding = sys.getfilesystemencoding()
+        self.send_header("Content-type", "text/html; charset=%s" % encoding)
+        self.send_header("Content-Length", str(length))
+        self.end_headers()
+        return f
+
+    def send_extract(self, query):
+        f = StringIO()
+        query = urllib.unquote(query)
+        content = Vlist()
+        for (i,sub) in enumerate(query.split(',')):
+            r = sub.split('-')
+            if len(r)==1:
+                if sub.strip()[0].lower()=='t':
+                    sub=sub.strip()[1:]
+                    content.append(Path(test_data.extract(int(sub)), 'T%s<br>'%sub))
+                else:
+                    content.append(Path(train_data.extract(int(sub)), '%s<br>'%sub))
+            elif len(r)==2:
+                test = False
+                if r[0].strip()[0].lower()=='t':
+                    test = True
+                    r[0]=r[0].strip()[1:]
+                    if r[1].strip()[0].lower()=='t':
+                        r[1]=r[1].strip()[1:]
+                for i in xrange(int(r[0]), int(r[1])+1):
+                    if test:
+                        content.append(Path(test_data.extract(i), 'T%d<br>'%i))
+                    else:
+                        content.append(Path(train_data.extract(i), '%d<br>'%i))
+            elif len(r)>2:
+                self.send_error(404, 'File not found')
+                return None
+        content.write(f)
+        length = f.tell()
+        f.seek(0)
+        self.send_response(200)
+        encoding = sys.getfilesystemencoding()
+        self.send_header("Content-type", "text/html; charset=%s" % encoding)
+        self.send_header("Content-Length", str(length))
+        self.end_headers()
+        return f
+
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        print >>sys.stderr, 'Usage: %s port' % sys.argv[0]
+
+    print >>sys.stderr, 'Loading dataset...',
+    path = os.path.join(data.path, 'data.hdf5')
+    train_data = TaxiDataset('train')
+    test_data = TaxiDataset('test')
+    print >>sys.stderr, 'done'
+
+    httpd = SocketServer.TCPServer(('', int(sys.argv[1])), VisualizerHTTPRequestHandler)
+    httpd.serve_forever()
diff --git a/visualizer/__init__.py b/visualizer/__init__.py
new file mode 100644
index 0000000..e1cdf73
--- /dev/null
+++ b/visualizer/__init__.py
@@ -0,0 +1,130 @@
+import os
+import json
+import getpass
+from datetime import datetime
+import itertools
+
+import numpy
+
+import data
+
+
+class NumpyEncoder(json.JSONEncoder):
+    def default(self, o):
+        if type(o).__module__ == numpy.__name__:
+            return o.item()
+        super(NumpyEncoder, self).default(o)
+
+
+class EGJ(object):
+    def save(self, path=getpass.getuser(), append=False):
+        path = os.path.join(data.path, 'visualizer', path)
+        if append:
+            if not os.path.isdir(path):
+                raise ValueError("Can't append to the given directory")
+            name = str(1+max(map(int, filter(str.isdigit, os.listdir(path)))+[-1]))
+            path = os.path.join(path, name)
+        else:
+            while os.path.isdir(path):
+                path = os.path.join(path, '0')
+
+        with open(path, 'w') as f:
+            self.write(f)
+
+    def write(self, file):
+        file.write(json.dumps(self.object(), cls=NumpyEncoder))
+
+    def type(self):
+        return 'raw'
+
+    def options(self):
+        return []
+
+    def object(self):
+        return {
+                'type': self.type(),
+                'data': {
+                    'type': 'FeatureCollection',
+                    'crs': {
+                        'type': 'name',
+                        'properties': {
+                            'name': 'urn:ogc:def:crs:OGC:1.3:CRS84'
+                        }
+                    },
+                    'features': self.features()
+                }
+            }
+
+
+class Point(EGJ):
+    def __init__(self, latitude, longitude, info=None):
+        self.latitude = latitude
+        self.longitude = longitude
+        self.info = info
+
+    def features(self):
+        d = {
+                'type': 'Feature',
+                'geometry': {
+                    'type': 'Point',
+                    'coordinates': [self.longitude, self.latitude]
+                }
+            }
+        if self.info is not None:
+            d['properties'] = { 'info': self.info }
+        return [d]
+
+
+class Path(EGJ):
+    def __init__(self, path, info=''):
+        self.path = path
+        self.info = info
+
+    def features(self):
+        info = self.info + '''trip_id: %(trip_id)s<br>
+            call_type: %(call_type_f)s<br>
+            origin_call: %(origin_call)d<br>
+            origin_stand: %(origin_stand)d<br>
+            taxi_id: %(taxi_id)d<br>
+            timestamp: %(timestamp_f)s<br>
+            day_type: %(day_type_f)s<br>
+            missing_data: %(missing_data)d<br>''' \
+            % dict(self.path,
+                call_type_f = ['central', 'stand', 'street'][self.path['call_type']],
+                timestamp_f = datetime.fromtimestamp(self.path['timestamp']).strftime('%c'),
+                day_type_f = ['normal', 'holiday', 'holiday eve'][self.path['day_type']])
+
+        return [{
+                'type': 'Feature',
+                'properties': {
+                    'info': info,
+                    'display': 'path',
+                    'timestamp': self.path['timestamp']
+                },
+                'geometry': {
+                    'type': 'LineString',
+                    'coordinates': [[lon, lat] for (lat, lon) in zip(self.path['latitude'], self.path['longitude'])]
+                }
+            }]
+
+
+class Vlist(EGJ, list):
+    def __init__(self, cluster=False, heatmap=False, *args):
+        list.__init__(self, *args)
+        self.cluster = cluster
+        self.heatmap = heatmap
+
+    def type(self):
+        if self.cluster or self.heatmap:
+            if all(isinstance(c, Point) for c in self):
+                if self.cluster:
+                    return 'cluster'
+                elif self.heatmap:
+                    return 'heatmap'
+            else:
+                raise ValueError('Building a %s with something that is not a Point' % ('cluster' if self.cluster else 'heatmap'))
+        else:
+            return 'raw'
+
+    def features(self):
+        return list(itertools.chain.from_iterable(p.features() for p in self))
diff --git a/visualizer/extract_all.sh b/visualizer/extract_all.sh
new file mode 100755
index 0000000..67d92aa
--- /dev/null
+++ b/visualizer/extract_all.sh
@@ -0,0 +1 @@
+find extractor -type f -print -exec {} \;
diff --git a/visualizer/extractor/destinations.py b/visualizer/extractor/destinations.py
new file mode 100755
index 0000000..967e766
--- /dev/null
+++ b/visualizer/extractor/destinations.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+
+from data.hdf5 import taxi_it
+from visualizer import Vlist, Point
+
+
+_sample_size = 5000
+
+if __name__ == '__main__':
+    points = Vlist(cluster=True)
+    for line in taxi_it('train'):
+        if len(line['latitude'])>0:
+            points.append(Point(line['latitude'][-1], line['longitude'][-1]))
+            if len(points) >= _sample_size:
+                break
+    points.save('destinations (cluster)')
+    points.cluster = False
+    points.heatmap = True
+    points.save('destinations (heatmap)')
diff --git a/visualizer/extractor/stands.py b/visualizer/extractor/stands.py
new file mode 100755
index 0000000..9224143
--- /dev/null
+++ b/visualizer/extractor/stands.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+
+from data.hdf5 import taxi_it
+from visualizer import Vlist, Point
+
+
+if __name__ == '__main__':
+    it = taxi_it('stands')
+    next(it) # Ignore the "no stand" entry
+
+    points = Vlist()
+    for (i, line) in enumerate(it):
+        points.append(Point(line['stands_latitude'], line['stands_longitude'], 'Stand (%d): %s' % (i+1, line['stands_name'])))
+    points.save('stands')
diff --git a/visualizer/extractor/test_positions.py b/visualizer/extractor/test_positions.py
new file mode 100755
index 0000000..a84d2ba
--- /dev/null
+++ b/visualizer/extractor/test_positions.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+
+from data.hdf5 import taxi_it
+from visualizer import Vlist, Point
+
+
+if __name__ == '__main__':
+    points = Vlist(heatmap=True)
+    for line in taxi_it('test'):
+        for (lat, lon) in zip(line['latitude'], line['longitude']):
+            points.append(Point(lat, lon))
+    points.save('test positions')
diff --git a/visualizer/extractor/train_poi.py b/visualizer/extractor/train_poi.py
new file mode 100755
index 0000000..a4ccbca
--- /dev/null
+++ b/visualizer/extractor/train_poi.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+
+import os
+
+import data
+from data.hdf5 import TaxiDataset
+from visualizer import Path
+
+
+poi = {
+    'longest': 1492417
+}
+
+if __name__ == '__main__':
+    prefix = os.path.join(data.path, 'visualizer', 'Train POI')
+    if not os.path.isdir(prefix):
+        os.mkdir(prefix)
+
+    d = TaxiDataset('train')
+    for (k, v) in poi.items():
+        Path(d.extract(v)).save(os.path.join('Train POI', k))
diff --git a/visualizer/index.html b/visualizer/index.html
new file mode 100644
index 0000000..0094af6
--- /dev/null
+++ b/visualizer/index.html
@@ -0,0 +1,71 @@
+<html lang="en">
+<head>
+	<title>Taxi Visualizer</title>
+	<meta charset="UTF-8" />
+	<link rel="stylesheet" href="http://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
+	<link rel="stylesheet" href="http://openlayers.org/en/v3.4.0/css/ol.css">
+	<link rel="stylesheet" href="style.css">
+
+	<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
+	<script src="http://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
+	<script src="http://openlayers.org/en/v3.4.0/build/ol.js"></script>
+	<script src="script.js"></script>
+</head>
+<body>
+	<div id="map" class="map">
+		<div id="featureinfo">
+			<div id="featureinfo-static"></div>
+			<div id="featureinfo-dynamic"></div>
+		</div>
+		<div id="coordinfo"></div>
+	</div>
+	<div id="config">
+		<ul>
+			<li>Measure
+				<ul id="config-measure">
+					<li>Enable</li>
+					<li style="display: none;">Disable</li>
+					<li><input type="checkbox" id="measure-euclidean"><label for="measure-euclidean">Euclidean</label></li>
+					<li><input type="checkbox" id="measure-equirectangular"><label for="measure-equirectangular">Equirectangular</label></li>
+					<li><input type="checkbox" id="measure-haversine" checked><label for="measure-haversine">Haversine</label></li>
+					<li>Clear</li>
+				</ul>
+			</li>
+			<li>Base layer
+				<ul id="config-layer">
+					<li>OSM</li>
+					<li>Bing</li>
+					<li>Bing (no labels)</li>
+				</ul>
+			</li>
+			<li>Path draw options
+				<ul id="config-pathdraw">
+					<li>No points</li>
+					<li>Endpoints</li>
+					<li>All points</li>
+					<li>Set resolution</li>
+				</ul>
+			</li>
+			<li>Heatmap options
+				<ul id="config-heatmap">
+					<li>Set radius</li>
+					<li>Set blur</li>
+				</ul>
+			</li>
+			<li style="display: none;">Enable coord</li>
+			<li>Disable coord</li>
+			<li>Set player speed</li>
+		</ul>
+	</div>
+	<div id="datalist">
+		<div id="datalist-tree">
+			<ul></ul>
+		</div>
+		<div id="dataextract">
+			<input type="text">
+			<button type="button">Clear</button>
+			<button type="button">Refresh</button>
+		</div>
+	</div>
+</body>
+</html>
diff --git a/visualizer/script.js b/visualizer/script.js
new file mode 100644
index 0000000..98c9593
--- /dev/null
+++ b/visualizer/script.js
@@ -0,0 +1,1037 @@
+/***************/
+/*** General ***/
+/***************/
+
+window.app = {};
+var app = window.app;
+
+app.mainLayer = new ol.layer.Tile({ source: new ol.source.OSM() });
+
+
+/****************/
+/*** Geometry ***/
+/****************/
+
+app.geometry = {}
+app.geometry.REarth = 6371000;
+app.geometry.toRadians = function(x){ return x * Math.PI / 180; };
+
+app.geometry.haversine = function(lat1, lon1, lat2, lon2){
+	var lat1 = app.geometry.toRadians(lat1);
+	var lon1 = app.geometry.toRadians(lon1);
+	var lat2 = app.geometry.toRadians(lat2);
+	var lon2 = app.geometry.toRadians(lon2);
+
+    var dlat = Math.abs(lat1-lat2);
+    var dlon = Math.abs(lon1-lon2);
+
+    var alpha = Math.pow(Math.sin(dlat/2), 2) + Math.cos(lat1) * Math.cos(lat2) * Math.pow(Math.sin(dlon/2), 2);
+    var d = Math.atan2(Math.sqrt(alpha), Math.sqrt(1-alpha));
+
+    return  2 * app.geometry.REarth * d;
+};
+
+app.geometry.equirectangular = function(lat1, lon1, lat2, lon2){
+	var lat1 = app.geometry.toRadians(lat1);
+	var lon1 = app.geometry.toRadians(lon1);
+	var lat2 = app.geometry.toRadians(lat2);
+	var lon2 = app.geometry.toRadians(lon2);
+	var x = (lon2-lon1) * Math.cos((lat1+lat2)/2);
+	var y = (lat2-lat1);
+	return Math.sqrt(x*x + y*y) * app.geometry.REarth;
+};
+
+
+/***************/
+/*** Measure ***/
+/***************/
+
+app.measure = {};
+app.measure.tooltip_list = [];
+
+app.measure.source = new ol.source.Vector();
+
+app.measure.layer = new ol.layer.Vector({
+	source: app.measure.source,
+	style: new ol.style.Style({
+		fill: new ol.style.Fill({
+			color: 'rgba(255, 255, 255, 0.2)'
+		}),
+		stroke: new ol.style.Stroke({
+			color: '#FC3',
+			width: 2
+		}),
+		image: new ol.style.Circle({
+			radius: 7,
+			fill: new ol.style.Fill({
+				color: '#FC3'
+			})
+		})
+	})
+});
+
+app.measure.pointerMoveHandler = function(evt){
+	if(evt.dragging){ return; }
+	var tooltipCoord = evt.coordinate;
+
+	if(app.measure.sketch){
+		var output;
+		var geom = (app.measure.sketch.getGeometry());
+		if(geom instanceof ol.geom.LineString){
+			output = app.measure.formatLength((geom));
+			tooltipCoord = geom.getLastCoordinate();
+		}
+		app.measure.tooltipElement.innerHTML = output;
+		app.measure.tooltip.setPosition(tooltipCoord);
+	}
+};
+
+app.measure.addInteraction = function(){
+	app.measure.draw = new ol.interaction.Draw({
+		source: app.measure.source,
+		type: ('LineString'),
+		style: new ol.style.Style({
+			fill: new ol.style.Fill({
+				color: 'rgba(255, 255, 255, 0.2)'
+			}),
+			stroke: new ol.style.Stroke({
+				color: 'rgba(0, 0, 0, 0.5)',
+				lineDash: [10, 10],
+				width: 2
+			}),
+			image: new ol.style.Circle({
+				radius: 5,
+				stroke: new ol.style.Stroke({
+					color: 'rgba(0, 0, 0, 0.7)'
+				}),
+				fill: new ol.style.Fill({
+					color: 'rgba(255, 255, 255, 0.2)'
+				})
+			})
+		})
+	});
+	app.map.addInteraction(app.measure.draw);
+
+	app.measure.createTooltip();
+
+	app.measure.draw.on('drawstart',
+		function(evt){
+			app.measure.sketch = evt.feature;
+		}, this);
+
+	app.measure.draw.on('drawend',
+		function(evt){
+			app.measure.tooltipElement.className = 'measure-tooltip measure-tooltip-static';
+			app.measure.tooltip.setOffset([0, -7]);
+			app.measure.sketch = null;
+			app.measure.tooltipElement = null;
+			app.measure.createTooltip();
+		}, this);
+};
+
+app.measure.createTooltip = function(){
+	if(app.measure.tooltipElement){
+		app.measure.tooltipElement.parentNode.removeChild(app.measure.tooltipElement);
+	}
+	app.measure.tooltipElement = document.createElement('div');
+	app.measure.tooltipElement.className = 'measure-tooltip measure-tooltip-value';
+	app.measure.tooltip = new ol.Overlay({
+		element: app.measure.tooltipElement,
+		offset: [0, -15],
+		positioning: 'bottom-center'
+	});
+	app.measure.tooltip_list.push(app.measure.tooltip);
+	app.map.addOverlay(app.measure.tooltip);
+};
+
+app.measure.formatLength = function(line){
+	var length_euclidean = line.getLength();
+	var length_equirectangular = 0;
+	var length_haversine = 0;
+	var coordinates = line.getCoordinates();
+	var sourceProj = app.map.getView().getProjection();
+	for(var i = 0, ii = coordinates.length - 1; i < ii; ++i){
+		var c1 = ol.proj.transform(coordinates[i], sourceProj, 'EPSG:4326');
+		var c2 = ol.proj.transform(coordinates[i + 1], sourceProj, 'EPSG:4326');
+		length_equirectangular += app.geometry.equirectangular(c1[1], c1[0], c2[1], c2[0]);
+		length_haversine += app.geometry.haversine(c1[1], c1[0], c2[1], c2[0]);
+	}
+
+	var disp = function(x){
+		if(x > 100){
+			return Math.round(x / 1000 * 1000) / 1000 + 'km';
+		} else {
+			return Math.round(x * 1000) / 1000 + 'm';
+		}
+	}
+
+	var length_euclidean = disp(length_euclidean);
+	var length_equirectangular = disp(length_equirectangular);
+	var length_haversine = disp(length_haversine);
+
+	var display_euclidean = $('input#measure-euclidean').prop('checked');
+	var display_equirectangular = $('input#measure-equirectangular').prop('checked');
+	var display_haversine = $('input#measure-haversine').prop('checked');
+
+	var header = true;
+	if(display_euclidean + display_equirectangular + display_haversine == 1){
+		header = false;
+	}
+
+	var str = '';
+	if(display_euclidean){
+		if(header){ str += 'euclidean: '; }
+		str += length_euclidean;
+	}
+	if(display_equirectangular){
+		if(header){ if(display_euclidean){ str += '<br>'; } str += 'equirectangular: '; }
+		str += length_equirectangular;
+	}
+	if(display_haversine){
+		if(header){ str += '<br> haversine: '; }
+		str += length_haversine;
+	}
+	return str;
+};
+
+
+/*******************/
+/*** DataDisplay ***/
+/*******************/
+
+app.dataDisplay = {};
+app.dataDisplay.layers = {};
+app.dataDisplay.heatmapRadius = 5;
+app.dataDisplay.heatmapBlur = 5;
+app.dataDisplay.pathPointMode = 1; // endpoints
+app.dataDisplay.pathPointResolution = 50;
+
+app.dataDisplay.loadLayer = function(path){
+	$.ajax({url: path, cache: false, dataType: 'json',
+		success: function(result){
+			app.dataDisplay.layers[path] = app.dataDisplay.preprocess(result);
+			app.map.addLayer(app.dataDisplay.layers[path]);
+		}
+	});
+};
+
+app.dataDisplay.unloadLayer = function(path){
+	app.map.removeLayer(app.dataDisplay.layers[path]);
+	delete app.dataDisplay.layers[path];
+};
+
+app.dataDisplay.rawStyle = function(feature, resolution){
+	var style = [ new ol.style.Style({
+			stroke: new ol.style.Stroke({
+				color: '#00F',
+				width: 5
+			}),
+			image: new ol.style.Circle({
+				radius: 5,
+				fill: new ol.style.Fill({
+					color: '#00F'
+				})
+			})
+		}),
+		new ol.style.Style({
+			stroke: new ol.style.Stroke({
+				color: '#000',
+				width: 2
+			}),
+			image: new ol.style.Circle({
+				radius: 2,
+				fill: new ol.style.Fill({
+					color: '#FFF'
+				})
+			})
+		})
+	];
+
+	if(feature.get('display') == 'path' && resolution < app.dataDisplay.pathPointResolution){
+		if(app.dataDisplay.pathPointMode == 2){
+			var polyline = feature.getGeometry();
+			var points = polyline.getCoordinates();
+			for(var i=1; i<points.length-1; ++i){
+				var point = points[i];
+				var pos = i/points.length;
+				var red = 0;
+				var green = 0;
+				if(pos < 0.5){
+					green = 255;
+					red = Math.round(pos*2*255);
+				} else {
+					red = 255;
+					green = Math.round((1-pos)*2*255);
+				}
+				style.push(new ol.style.Style({
+					geometry: new ol.geom.Point(point),
+					image: new ol.style.Circle({
+						radius: 3,
+						fill: new ol.style.Fill({
+							color: 'rgb('+red+','+green+',0)'
+						})
+					})
+				}));
+			}
+		}
+		if(app.dataDisplay.pathPointMode >= 1){
+			var polyline = feature.getGeometry();
+			var first = polyline.getFirstCoordinate();
+			var last = polyline.getLastCoordinate();
+			style.push(new ol.style.Style({
+				geometry: new ol.geom.Point(first),
+				image: new ol.style.Circle({
+					radius: 5,
+					fill: new ol.style.Fill({
+						color: '#0F0'
+					})
+				})
+			}));
+			style.push(new ol.style.Style({
+				geometry: new ol.geom.Point(last),
+				image: new ol.style.Circle({
+					radius: 5,
+					fill: new ol.style.Fill({
+						color: '#F00'
+					})
+				})
+			}));
+		}
+	}
+
+	return style;
+};
+
+app.dataDisplay.clusterStyleCache = {};
+app.dataDisplay.clusterStyle = function(feature, resolution){
+	var size = feature.get('features').length;
+	var style = app.dataDisplay.clusterStyleCache[size];
+	if(!style){
+		style = [new ol.style.Style({
+			image: new ol.style.Circle({
+				radius: 10,
+				stroke: new ol.style.Stroke({
+					color: '#FFF'
+				}),
+				fill: new ol.style.Fill({
+					color: '#39C'
+				})
+			}),
+			text: new ol.style.Text({
+				text: size.toString(),
+				fill: new ol.style.Fill({
+					color: '#FFF'
+				})
+			})
+		})];
+		app.dataDisplay.clusterStyleCache[size] = style;
+	}
+	return style;
+};
+
+app.dataDisplay.preprocess = function(egj){
+	var source = new ol.source.GeoJSON({
+		projection: 'EPSG:3857',
+		object: egj.data
+	});
+
+	if(egj.type == 'raw'){
+		return new ol.layer.Vector({
+			source: source,
+			style: app.dataDisplay.rawStyle
+		});
+
+	} else if(egj.type == 'cluster'){
+		return new ol.layer.Vector({
+			source: new ol.source.Cluster({
+				distance: 40,
+				source: source
+			}),
+			style: app.dataDisplay.clusterStyle
+		});
+
+	} else if(egj.type == 'heatmap'){
+		return new ol.layer.Heatmap({
+			source: source,
+			blur: app.dataDisplay.heatmapBlur,
+			radius: app.dataDisplay.heatmapRadius
+		});
+	}
+};
+
+app.dataDisplay.reloadPathes = function(){
+	for(var layer in app.dataDisplay.layers){
+		if(app.dataDisplay.layers[layer].getSource().getFeatures()[0].get('display') == 'path'){
+			app.dataDisplay.layers[layer].changed();
+		}
+	}
+};
+
+app.dataDisplay.reloadHeatmaps = function(){
+	for(var key in app.dataDisplay.layers){
+		var layer = app.dataDisplay.layers[key];
+		if(layer instanceof ol.layer.Heatmap){
+			layer.setBlur(app.dataDisplay.heatmapBlur);
+			layer.setRadius(app.dataDisplay.heatmapRadius);
+		}
+	}
+};
+
+
+/****************/
+/*** DataList ***/
+/****************/
+
+app.dataList = {};
+app.dataList.current = {};
+app.dataList.idgen = 0;
+
+app.dataList.init = function(){
+	app.dataList.elementTree = {};
+	app.dataList.elementTree.parent = null;
+	app.dataList.elementTree.children = {};
+	app.dataList.elementTree.checkbox = null;
+	app.dataList.elementTree.ul = $('#datalist-tree ul');
+
+	app.dataList.updateList();
+	setInterval(app.dataList.updateList, 1000);
+};
+
+app.dataList.updateList = function(){
+	$.ajax({url: '/ls/', cache: false, dataType: 'json',
+		success: function(result){
+			result.forEach(function(file){
+				file.uri = file.path.join('/') + '/' + file.name
+				if(file.uri in app.dataList.current){
+					if(file.mtime > app.dataList.current[file.uri].mtime){
+						var act = app.dataList.current[file.uri];
+						if(act.checkbox.prop('checked')){
+							app.dataList.unloadLayer(file.uri);
+							app.dataList.loadLayer(file.uri);
+						}
+						act.mtime = file.mtime;
+					}
+				} else {
+					app.dataList.insert(file);
+				}
+			});
+		}
+	});
+};
+
+app.dataList.insert = function(file){
+	var cur = app.dataList.elementTree;
+	var prev = null;
+	for(var i = 1; i<file.path.length; i++){
+		if(!(file.path[i] in cur.children)){
+			var n = {};
+			n.uri = file.path.slice(0, i+1).join('/');
+			n.children = {};
+			n.parent = cur;
+			n.ul = $('<ul>')
+				.prop('id', 'folder-'+app.dataList.idgen)
+				.hide();
+
+			var hidelink = $('<a>')
+				.prop('href', '')
+				.append('hide')
+				.hide();
+			var showlink = $('<a>')
+				.prop('href', '')
+				.append('show');
+
+			var playlink = $('<a>')
+				.prop('href', '')
+				.append('play');
+			var stoplink = $('<a>')
+				.prop('href', '')
+				.append('stop')
+				.hide();
+
+			n.checkbox = $('<input>')
+				.prop('type', 'checkbox')
+				.prop('id', 'data-'+app.dataList.idgen)
+				.prop('name', n.uri);
+			n.checkbox.change(app.dataList.selectData);
+			var item = $('<li>')
+				.append(n.checkbox)
+				.append($('<label>')
+					.prop('for', 'data-'+app.dataList.idgen)
+					.append(file.path[i]))
+				.append(' ')
+				.append(hidelink)
+				.append(showlink)
+				.append(' ')
+				.append(playlink)
+				.append(stoplink)
+				.append(n.ul)
+			app.dataList.idgen++;
+			cur.ul.append(item);
+			cur.children[file.path[i]] = n;
+			app.dataList.current[n.uri] = n;
+
+			var foldertoggler = function(){
+				hidelink.toggle();
+				showlink.toggle();
+				n.ul.toggle();
+				return false;
+			};
+			hidelink.click(foldertoggler);
+			showlink.click(foldertoggler);
+
+			playlink.click(function(){
+				playlink.toggle();
+				stoplink.toggle();
+				app.dataPlayer.play(n);
+				return false;
+			});
+			stoplink.click(function(){
+				playlink.toggle();
+				stoplink.toggle();
+				app.dataPlayer.stop(n);
+				return false;
+			});
+		}
+		prev = cur;
+		cur = cur.children[file.path[i]];
+	}
+
+	file.parent = cur;
+	file.checkbox = $('<input>')
+		.prop('type', 'checkbox')
+		.prop('id', 'data-'+app.dataList.idgen)
+		.prop('name', file.uri);
+	file.checkbox.change(app.dataList.selectData);
+	var item = $('<li>')
+		.append(file.checkbox)
+		.append($('<label>')
+			.prop('for', 'data-'+app.dataList.idgen)
+			.append(file.name))
+	app.dataList.idgen++;
+	cur.ul.append(item);
+	cur.children[file.name] = file;
+	app.dataList.current[file.uri] = file;
+
+	if(cur.checkbox && cur.checkbox.prop('checked')){
+		file.checkbox.prop('checked', true);
+		app.dataList.updateData(file);
+	}
+};
+
+app.dataList.updateData = function(cur){
+	if(cur.checkbox.prop('checked')){
+		app.dataList.loadLayer(cur.uri);
+	} else {
+		app.dataList.unloadLayer(cur.uri);
+	}
+};
+
+app.dataList.updateCheckboxes = function(cur){
+	if(cur.checkbox.prop('checked')){
+		app.dataList.check(cur);
+	} else {
+		app.dataList.uncheck(cur);
+	}
+};
+
+app.dataList.selectData = function(e){
+	var cur = app.dataList.current[e.target.name];
+	if(!('children' in cur)){
+		app.dataList.updateData(cur);
+	}
+	app.dataList.updateCheckboxes(cur);
+};
+
+app.dataList.changeChildren = function rec(cur, val){
+	cur.checkbox.prop('checked', val);
+	if('children' in cur){
+		for(var child in cur.children){
+			rec(cur.children[child], val);
+		}
+	} else {
+		app.dataList.updateData(cur);
+	}
+};
+
+app.dataList.check = function(cur){
+	// Check all parents
+	var p = cur.parent;
+	while(p.checkbox != null){
+		p.checkbox.prop('checked', true);
+		p = p.parent;
+	}
+
+	// Check all children
+	for(var child in cur.children){
+		app.dataList.changeChildren(cur.children[child], true);
+	}
+};
+
+app.dataList.uncheck = function(cur){
+	// Uncheck empty parents
+	var p = cur.parent;
+	while(p.checkbox != null && p.checkbox.prop('checked')){
+		var cc = false;
+		for(var child in p.children){
+			cc = cc || p.children[child].checkbox.prop('checked');
+		}
+		if(cc){
+			break;
+		}
+		p.checkbox.prop('checked', false);
+		p = p.parent;
+	}
+
+	// Uncheck all children
+	for(var child in cur.children){
+		app.dataList.changeChildren(cur.children[child], false);
+	}
+};
+
+
+app.dataList.loadLayer = function(uri){
+	app.dataDisplay.loadLayer('/get'+uri);
+};
+
+app.dataList.unloadLayer = function(uri){
+	app.dataDisplay.unloadLayer('/get'+uri);
+};
+
+
+/*******************/
+/*** DataExtract ***/
+/*******************/
+
+app.dataExtract = {};
+app.dataExtract.current = null;
+
+app.dataExtract.init = function(){
+	$('#dataextract button:contains("Refresh")').click(app.dataExtract.display);
+	$('#dataextract input').keypress(function(e){
+		if(e.keyCode == 13){
+			app.dataExtract.display();
+		}
+	});
+	$('#dataextract button:contains("Clear")').click(app.dataExtract.clear);
+};
+
+app.dataExtract.display = function(){
+	if(app.dataExtract.current){
+		app.dataDisplay.unloadLayer('/extract/' + app.dataExtract.current);
+	}
+	app.dataExtract.current = $('#dataextract input').val();
+	app.dataDisplay.loadLayer('/extract/' + app.dataExtract.current);
+};
+
+app.dataExtract.clear = function(){
+	if(app.dataExtract.current){
+		app.dataDisplay.unloadLayer('/extract/' + app.dataExtract.current);
+		app.dataExtract.current = null;
+	}
+};
+
+
+
+/******************/
+/*** DataPlayer ***/
+/******************/
+
+app.dataPlayer = {};
+app.dataPlayer.current = {};
+app.dataPlayer.updateFrequency = 200;
+app.dataPlayer.time = 0;
+
+app.dataPlayer.init = function(){
+	app.dataPlayer.intervalId = setInterval(app.dataPlayer.update, app.dataPlayer.updateFrequency);
+};
+
+app.dataPlayer.updateInterval = function(){
+	clearInterval(app.dataPlayer.intervalId);
+	app.dataPlayer.intervalId = setInterval(app.dataPlayer.update, app.dataPlayer.updateFrequency);
+};
+
+app.dataPlayer.play = function(cur){
+	app.dataPlayer.updateKeys(cur);
+	if(cur.keys.length == 0){
+		alert("ERROR: No number in directory.");
+		return;
+	}
+	app.dataList.uncheck(cur);
+	cur.checkbox.prop('checked', true);
+	cur.playIndex = 0;
+	app.dataPlayer.current[cur.uri] = cur;
+	for(var key in cur.context){
+		var child = cur.children[cur.context[key]];
+		child.checkbox.prop('checked', true);
+		if(!('children' in child)){
+			app.dataList.updateData(child);
+		}
+		app.dataList.updateCheckboxes(child);
+	}
+};
+
+app.dataPlayer.updateKeys = function(cur){
+	var keys = Object.keys(cur.children);
+	cur.keys = keys.map(Number).filter(function(x){ return !isNaN(x); }).sort(function(l,r){return l-r;});
+	cur.context = keys.filter(function(x){ return isNaN(Number(x)); });
+};
+
+app.dataPlayer.stop = function(cur){
+	delete app.dataPlayer.current[cur.uri];
+	delete cur.keys;
+	delete cur.context;
+	delete cur.playIndex;
+};
+
+app.dataPlayer.update = function(){
+	for(var key in app.dataPlayer.current){
+		var cur = app.dataPlayer.current[key];
+		var prev = cur.children[cur.keys[cur.playIndex]];
+		cur.playIndex++;
+		if(cur.playIndex >= cur.keys.length){
+			app.dataPlayer.updateKeys(cur);
+			if(cur.playIndex >= cur.keys.length){
+				cur.playIndex = 0;
+			}
+		}
+		var next = cur.children[cur.keys[cur.playIndex]];
+
+		prev.checkbox.prop('checked', false);
+		app.dataList.updateData(prev);
+		next.checkbox.prop('checked', true);
+		app.dataList.updateData(next);
+	}
+};
+
+
+/*****************/
+/*** CoordInfo ***/
+/*****************/
+
+app.coordInfo = {};
+app.coordInfo.init = function(){
+	app.coordInfo.element = $('#coordInfo');
+	app.coordInfo.enable();
+};
+
+app.coordInfo.enable = function(){
+	app.map.on('pointermove', app.coordInfo.update);
+	app.coordInfo.element.show();
+};
+
+app.coordInfo.disable = function(){
+	app.coordInfo.element.hide();
+	app.map.un('pointermove', app.coordInfo.update);
+};
+
+app.coordInfo.update = function(evt){
+	var coord = ol.proj.transform(app.map.getEventCoordinate(evt.originalEvent), app.map.getView().getProjection(), 'EPSG:4326');
+	app.coordInfo.element.text(coord[1] + ', ' + coord[0]);
+};
+
+
+/*******************/
+/*** FeatureInfo ***/
+/*******************/
+
+app.featureInfo = {};
+
+app.featureInfo.init = function(){
+	app.featureInfo.element = $('#featureinfo');
+	app.featureInfo.static = $('#featureinfo-static');
+	app.featureInfo.dynamic = $('#featureinfo-dynamic');
+	app.featureInfo.element.hide();
+	app.featureInfo.enable();
+};
+
+app.featureInfo.enable = function(){
+	app.map.on('pointermove', app.featureInfo.updateMove);
+	app.map.on('click', app.featureInfo.updateClick);
+};
+
+app.featureInfo.disable = function(){
+	app.map.un('pointermove', app.featureInfo.updateMove);
+	app.map.un('click', app.featureInfo.updateClick);
+};
+
+app.featureInfo.updateMove = function(evt){
+	if(evt.dragging){
+		app.featureInfo.element.hide();
+		return;
+	}
+	app.featureInfo.display(evt);
+};
+
+app.featureInfo.updateClick = function(evt){
+	app.featureInfo.display(evt);
+};
+
+app.featureInfo.display = function(evt){
+	app.featureInfo.element.css({
+		left: (evt.pixel[0] + 10) + 'px',
+		top: evt.pixel[1] + 'px'
+	});
+	var feature = app.map.forEachFeatureAtPixel(evt.pixel, function(feature, layer) {
+		return feature;
+	});
+	if(feature && feature.get('info')){
+		if(feature.get('display') == 'path'){
+			var dtime = app.featureInfo.interpolateTime(feature.getGeometry(), evt.coordinate);
+			var date = new Date(1000*(feature.get('timestamp') + dtime*15));
+			var desc = 'index: '+dtime+'<br>';
+			desc += 'date: '+date.toISOString()+'<br>';
+			app.featureInfo.dynamic.html(desc);
+		} else {
+			app.featureInfo.dynamic.html('');
+		}
+		app.featureInfo.static.html(feature.get('info'));
+		app.featureInfo.element.show();
+	} else {
+		app.featureInfo.element.hide();
+	}
+};
+
+app.featureInfo.interpolateTime = function(polyline, coord){
+	var closest = polyline.getClosestPoint(coord);
+	var best = 1000;
+	var bestStart = -1;
+	var bestEnd = -1;
+	var bestI = -1;
+	var i = 0;
+	var points = polyline.getCoordinates();
+	for(var i=0; i<points.length-1; i++){
+		var start = points[i];
+		var end = points[i+1];
+		var dist = Math.abs((end[0]-start[0])*closest[1] - (end[1]-start[1])*closest[0] + end[1]*start[0] - end[0]*start[1]) / Math.sqrt(Math.pow(end[0]-start[0], 2) + Math.pow(end[1]-start[1], 2));
+		if(dist<best){
+			best = dist;
+			bestStart = start;
+			bestEnd = end;
+			bestI = i;
+		}
+	}
+
+	if(bestI == -1){
+		return 0;
+	}
+
+	var distClosest = app.geometry.equirectangular(bestStart[1], bestStart[0], closest[1], closest[0]);
+	var distEnd = app.geometry.equirectangular(bestStart[1], bestStart[0], bestEnd[1], bestEnd[0]);
+	var ratio = distClosest / distEnd;
+	return bestI + ratio;
+};
+
+
+/***************/
+/*** Control ***/
+/***************/
+
+app.control = {};
+
+app.control.OpenConfigControl = function(opt_options){
+	var options = opt_options || {};
+	
+	var button = document.createElement('button');
+	button.innerHTML = '⚙';
+	
+	button.addEventListener('click', function(e){ $('#config').toggle() }, false);
+	button.addEventListener('touchstart', function(e){ $('#config').toggle() }, false);
+	
+	var element = document.createElement('div');
+	element.className = 'open-config ol-unselectable ol-control';
+	element.appendChild(button);
+	
+	ol.control.Control.call(this, {
+		element: element,
+		target: options.target
+	});
+};
+ol.inherits(app.control.OpenConfigControl, ol.control.Control);
+
+app.control.OpenDatalist = function(opt_options){
+	var options = opt_options || {};
+	
+	var button = document.createElement('button');
+	button.innerHTML = '«';
+	
+	var toggler = function(e){
+		$('#datalist').toggle();
+		if(button.innerHTML == '«'){
+			button.innerHTML = '»';
+			$('.open-datalist').css('right', '20.5em');
+		}
+		else{
+			button.innerHTML = '«';
+			$('.open-datalist').css('right', '.5em');
+		}
+	};
+	button.addEventListener('click', toggler, false);
+	button.addEventListener('touchstart', toggler, false);
+	
+	var element = document.createElement('div');
+	element.className = 'open-datalist ol-unselectable ol-control';
+	element.appendChild(button);
+	
+	ol.control.Control.call(this, {
+		element: element,
+		target: options.target
+	});
+};
+ol.inherits(app.control.OpenDatalist, ol.control.Control);
+
+
+/************/
+/*** Menu ***/
+/************/
+
+app.menu = {};
+
+app.menu.init = function(){
+	$('#config ul').menu();
+
+	$('#config ul li').click(function(e){
+		switch($(this).text()){
+			case 'Enable coord':
+				app.coordInfo.enable();
+				$('#config ul li:contains("Enable coord")').toggle();
+				$('#config ul li:contains("Disable coord")').toggle();
+				break;
+			case 'Disable coord':
+				app.coordInfo.disable();
+				$('#config ul li:contains("Enable coord")').toggle();
+				$('#config ul li:contains("Disable coord")').toggle();
+				break;
+			case 'Set player speed':
+				var tmp = prompt("Player update frequency (milliseconds)", app.dataPlayer.updateFrequency);
+				if(tmp){
+					app.dataPlayer.updateFrequency = parseInt(tmp);
+					app.dataPlayer.updateInterval();
+				}
+				break;
+		}
+	});
+
+	$('ul#config-measure li').click(function(e){
+		switch($(this).text()){
+			case 'Enable':
+				app.measure.addInteraction();
+				app.map.on('pointermove', app.measure.pointerMoveHandler);
+				app.featureInfo.disable();
+				$('ul#config-measure li:contains("Enable")').toggle();
+				$('ul#config-measure li:contains("Disable")').toggle();
+				break;
+			case 'Disable':
+				app.featureInfo.enable();
+				app.map.un('pointermove', app.measure.pointerMoveHandler);
+				app.map.removeInteraction(app.measure.draw);
+				app.measure.draw = null;
+				$('ul#config-measure li:contains("Enable")').toggle();
+				$('ul#config-measure li:contains("Disable")').toggle();
+				break;
+			case 'Clear':
+				app.measure.source.clear();
+				app.measure.tooltip_list.forEach(function(e){
+					app.map.removeOverlay(e);
+				});
+				app.measure.tooltip_list.length = 0;
+				if(app.measure.draw){
+					app.map.removeInteraction(app.measure.draw);
+					app.measure.addInteraction();
+				}
+				break;
+		}
+	});
+
+	$('ul#config-layer li').click(function(e){
+		switch($(this).text()){
+			case 'OSM':
+				app.mainLayer = new ol.layer.Tile({ source: new ol.source.OSM() });
+				break;
+			case 'Bing':
+				app.mainLayer = new ol.layer.Tile({ source: new ol.source.BingMaps({
+					key: 'Ak-dzM4wZjSqTlzveKz5u0d4IQ4bRzVI309GxmkgSVr1ewS6iPSrOvOKhA-CJlm3',
+					imagerySet: 'AerialWithLabels',
+					maxZoom: 19
+				}) });
+				break;
+			case 'Bing (no labels)':
+				app.mainLayer = new ol.layer.Tile({ source: new ol.source.BingMaps({
+					key: 'Ak-dzM4wZjSqTlzveKz5u0d4IQ4bRzVI309GxmkgSVr1ewS6iPSrOvOKhA-CJlm3',
+					imagerySet: 'Aerial',
+					maxZoom: 19
+				}) });
+				break;
+		}
+		app.map.getLayers().setAt(0, app.mainLayer);
+	});
+
+	$('ul#config-pathdraw li').click(function(e){
+		switch($(this).text()){
+			case 'Set resolution':
+				var tmp = prompt("Path points resolution", app.dataDisplay.pathPointResolution);
+				if(tmp){
+					app.dataDisplay.pathPointResolution = parseInt(tmp);
+					app.dataDisplay.reloadPathes();
+				}
+				break;
+			case 'No points':
+				app.dataDisplay.pathPointMode = 0;
+				app.dataDisplay.reloadPathes();
+				break;
+			case 'Endpoints':
+				app.dataDisplay.pathPointMode = 1;
+				app.dataDisplay.reloadPathes();
+				break;
+			case 'All points':
+				app.dataDisplay.pathPointMode = 2;
+				app.dataDisplay.reloadPathes();
+				break;
+		}
+	});
+
+	$('ul#config-heatmap li').click(function(e){
+		switch($(this).text()){
+			case 'Set blur':
+				var tmp = prompt("Heatmap blur", app.dataDisplay.heatmapBlur);
+				if(tmp){
+					app.dataDisplay.heatmapBlur = parseInt(tmp);
+					app.dataDisplay.reloadHeatmaps();
+				}
+				break;
+			case 'Set radius':
+				var tmp = prompt("Heatmap radius", app.dataDisplay.heatmapRadius);
+				if(tmp){
+					app.dataDisplay.heatmapRadius = parseInt(tmp);
+					app.dataDisplay.reloadHeatmaps();
+				}
+				break;
+		}
+	});
+};
+
+
+/**********************/
+/*** Initialization ***/
+/**********************/
+
+$(function(){
+	app.map = new ol.Map({
+		controls: ol.control.defaults().extend([
+			new app.control.OpenConfigControl(),
+			new app.control.OpenDatalist()
+		]),
+		target: 'map',
+		layers: [ app.mainLayer, app.measure.layer ],
+		view: new ol.View({
+			center: ol.proj.transform([-8.621953, 41.162142], 'EPSG:4326', 'EPSG:3857'),
+			zoom: 13
+		})
+	});
+
+	app.menu.init();
+	app.coordInfo.init();
+	app.featureInfo.init();
+	app.dataList.init();
+	app.dataExtract.init();
+	app.dataPlayer.init();
+});
diff --git a/visualizer/style.css b/visualizer/style.css
new file mode 100644
index 0000000..b51b077
--- /dev/null
+++ b/visualizer/style.css
@@ -0,0 +1,124 @@
+.map {
+	position: fixed;
+	left: 0; right:0; top:0; bottom:0;
+	z-index: 0;
+}
+
+.open-datalist {
+	top: .5em;
+	right: .5em;
+	z-index: 10;
+}
+
+#datalist {
+	position: fixed;
+	right:0; top:0; bottom:0;
+	width: 20em;
+	display: none;
+	z-index: 1;
+	background-color: #fff;
+	border-left: solid 1px black;
+}
+
+#datalist-tree {
+	position: absolute;
+	left:0; top:0; bottom:4em;
+	width: 100%;
+	overflow-y: auto;
+}
+
+#datalist-tree > ul {
+	padding-left: 0.5em;
+}
+
+#datalist-tree li > ul {
+	padding-left: 1.5em;
+}
+
+#datalist-tree li {
+	list-style-type: none;
+}
+
+#dataextract {
+	position: fixed;
+	bottom: 0;
+	height: 3.5em;
+}
+
+#dataextract input { width: 100%; }
+
+.open-config {
+	top: 65px;
+	left: .5em;
+	z-index: 10;
+}
+
+#config {
+	position: absolute;
+	left: 2em; top: 65px;
+	display: none;
+	z-index: 2;
+}
+
+#config ul ul {
+	top: 0px !important;
+	width: 12em;
+}
+
+.measure-tooltip {
+	position: relative;
+	background: rgba(0, 0, 0, 0.5);
+	border-radius: 4px;
+	color: white;
+	padding: 4px 8px;
+	opacity: 0.7;
+	white-space: nowrap;
+}
+
+.measure-tooltip-value {
+	opacity: 1;
+	font-weight: bold;
+}
+
+.measure-tooltip-static {
+	background-color: #ffcc33;
+	color: black;
+	border: 1px solid #fff;
+}
+
+.measure-tooltip-value:before,
+.measure-tooltip-static:before {
+	border-top: 6px solid rgba(0, 0, 0, 0.5);
+	border-right: 6px solid transparent;
+	border-left: 6px solid transparent;
+	content: "";
+	position: absolute;
+	bottom: -6px;
+	margin-left: -7px;
+	left: 50%;
+}
+
+.measure-tooltip-static:before {
+	border-top-color: #ffcc33;
+}
+
+#featureinfo {
+	position: absolute;
+	z-index: 100;
+	color: #fff;
+	background-color: #000;
+	border: solid 1px #fff;
+	border-radius: 10px;
+	padding: 4px;
+	opacity: 0.75;
+}
+
+#coordinfo {
+	position: absolute;
+	left: 0; bottom: 0;
+	z-index: 100;
+	color: #fff;
+	background-color: #000;
+	padding: 3px;
+	opacity: 0.66;
+}