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example.html
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<!DOCTYPE HTML>
<html>
<head>
<title>Bus query tool</title>
<!-- css libraries -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.5/leaflet.css">
<!-- js toolset -->
<script src="http://cdn.leafletjs.com/leaflet-0.7.5/leaflet.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!-- leaflet toolkit -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet.markercluster/0.4.0/leaflet.markercluster-src.js"></script>
</head>
<style>
.map {
width: 100%;
height: 600px;
}
.btn, .input-group-addon, .form-control {
border-radius: 0px;
}
.leaflet-cluster-anim .leaflet-marker-icon, .leaflet-cluster-anim .leaflet-marker-shadow {
-webkit-transition: -webkit-transform 0.3s ease-out, opacity 0.3s ease-in;
-moz-transition: -moz-transform 0.3s ease-out, opacity 0.3s ease-in;
-o-transition: -o-transform 0.3s ease-out, opacity 0.3s ease-in;
transition: transform 0.3s ease-out, opacity 0.3s ease-in;
}
.marker-cluster-small {
background-color: rgba(181, 226, 140, 0.6);
}
.marker-cluster-small div {
background-color: rgba(110, 204, 57, 0.6);
}
.marker-cluster-medium {
background-color: rgba(241, 211, 87, 0.6);
}
.marker-cluster-medium div {
background-color: rgba(240, 194, 12, 0.6);
}
.marker-cluster-large {
background-color: rgba(253, 156, 115, 0.6);
}
.marker-cluster-large div {
background-color: rgba(241, 128, 23, 0.6);
}
/* IE 6-8 fallback colors */
.leaflet-oldie .marker-cluster-small {
background-color: rgb(181, 226, 140);
}
.leaflet-oldie .marker-cluster-small div {
background-color: rgb(110, 204, 57);
}
.leaflet-oldie .marker-cluster-medium {
background-color: rgb(241, 211, 87);
}
.leaflet-oldie .marker-cluster-medium div {
background-color: rgb(240, 194, 12);
}
.leaflet-oldie .marker-cluster-large {
background-color: rgb(253, 156, 115);
}
.leaflet-oldie .marker-cluster-large div {
background-color: rgb(241, 128, 23);
}
.marker-cluster {
background-clip: padding-box;
border-radius: 20px;
}
.marker-cluster div {
width: 30px;
height: 30px;
margin-left: 5px;
margin-top: 5px;
text-align: center;
border-radius: 15px;
font: 12px "Helvetica Neue", Arial, Helvetica, sans-serif;
}
.marker-cluster span {
line-height: 30px;
}
</style>
<body>
<div class="container">
<h2>
Testing tool
</h2>
<button onclick="populateStops()">Draw Stops</button>
<button onclick="placeRouteStops()">Analyze B1 (Dir 0)</button>
<div class="row">
<div class="col-xs-12">
<div class="map" id="map">
</div>
</div>
</div>
</div>
</body>
<script type="text/javascript">
function setup () {
map = new L.map('map', {
center: new L.LatLng(40.8, -73.94),
zoom: 14,
layers: []
});
L.tileLayer('http://{s}.basemaps.cartocdn.com/light_nolabels/{z}/{x}/{y}.png').addTo(map);
};
// global for stops
var map;
var markers;
function populateStops () {
setup();
markers = new L.MarkerClusterGroup({ spiderfyOnMaxZoom: true, disableClusteringAtZoom: 18});
$.getJSON('data/stops.json')
.done(function (data) {
console.log('Done logged, running...');
runPlot(data);
})
.error(function (error) {
if (error.status == 200) {
console.log('Error logged - but 200 so running...');
runPlot(error.responseText);
} else {
console.log('Err', error);
}
})
};
var runPlot = function (data) {
if (typeof data == 'string') {
console.log('Data is string, parsing...');
data = JSON.parse(data);
console.log('Done parsing string.');
} else {
console.log('Data is already object...');
}
console.log('Processing ' + data.length + ' records...');
Object.keys(data).forEach(function (stop) {
stop = data[stop];
[0, 1].forEach(function (dir) {
sDir = stop[dir];
if (sDir !== undefined) {
Object.keys(sDir).forEach(function (s) {
s = sDir[s];
var loc = L.latLng(s.location[0], s.location[1]);
var m = L.marker(loc);
var str = 'direction_id: ' + s.direction_id +
', route_id: ' + s.route_id +
', stop_id: ' + s.stop_id +
', stop_lat: ' + s.stop_lat +
', stop_lon: ' + s.stop_lon +
', stop_name: ' + s.stop_name +
', stop_sequence: ' + s.stop_sequence;
m.bindPopup(str);
markers.addLayer(m);
});
}
});
});
console.log('Data processing complete, adding to map.')
map.addLayer(markers);
};
function placeRouteStops () {
setup();
$.getJSON('geojsons/B1/B1_dir0.geojson')
.done(function (data) {
console.log('Done logged, running...');
runStopDraw(data);
})
.error(function (error) {
if (error.status == 200) {
console.log('Error logged - but 200 so running...');
runStopDraw(error.responseText);
} else {
console.log('Err', error);
}
})
};
function runStopDraw (data) {
if (typeof data == 'string') {
console.log('Data is string, parsing...');
data = JSON.parse(data);
console.log('Done parsing string.');
} else {
console.log('Data is already object...');
var col = ['red', 'green', 'blue'];
var stops = data.properties.stops;
var allStops = L.featureGroup();
Object.keys(stops).forEach(function (stop) {
var st = L.circle(stops[stop].location, 10);
allStops.addLayer(st);
});
// allStops.addTo(map);
var shapes = data.features;
var allShapes = L.featureGroup();
shapes.forEach(function (shape, i) {
var sh = L.geoJson(shape, { style: { color: col[i] } });
var relStops = getRelevantStops(shape, stops);
var allignedStops = calcStopsAlligned(shape, relStops);
var allStops = L.featureGroup();
relStops.forEach(function (stop) {
var st = L.circle(stop.location, 10, {color: col[i]});
allStops.addLayer(st);
});
allStops.addTo(map);
allShapes.addLayer(sh);
var pts = shape.geometry.coordinates;
pts.forEach(function (pt) {
L.circle([pt[1], pt[0]], 4, { color: col[i] }).addTo(map);
});
});
allShapes.addTo(map);
map.fitBounds(allShapes.getBounds());
}
};
function getRelevantStops (shape, stops) {
var pts = shape.geometry.coordinates;
var rel = [];
pts.forEach(function (aft, i) {
var best = {
s: null,
d: null
};
Object.keys(stops).forEach(function (stop) {
var s = stops[stop],
l = stops[stop].location,
d = calcDist(l[0], l[1], aft[1], aft[0]);
if ((i > 0 && d < 100) && (best.d == null || d < best.d)) {
// compare distances with point in the middle versus with the point after the two points
var bef = pts[i - 1],
distNo = calcDist(bef[0], bef[1], aft[1], aft[0]) + calcDist(aft[0], aft[1], l[1], l[0]),
distYes = calcDist(bef[0], bef[1], l[1], l[0]) + calcDist(l[0], l[1], aft[1], aft[0]);
if (distYes < distNo) {
best.s = s;
best.d = d;
}
}
});
if (best.s !== null) {
rel.push(best.s);
}
});
return rel;
};
function calcStopsAlligned (shape, stops) {
var pts = shape.geometry.coordinates,
adjStops = [];
stops.forEach(function (s) {
var best = {d: null, dp: null, ll: null},
l = s.location;
pts.forEach(function (aft, i) {
var d = calcDist(l[0], l[1], aft[1], aft[0]);
if ((i > 0 && d < 100) && (best.d == null || d < best.d)) {
var bef = pts[i - 1],
A = calcDist(l[0], l[1], aft[1], aft[0]),
B = calcDist(bef[1], bef[0], l[0], l[1]),
F = calcDist(bef[1], bef[0], aft[1], aft[0]),
z = Math.acos((F * F + B * B - A *A)/(2 * B * F)),
C = B * Math.cos(z),
verB = F * Math.sin(z),
horB = F * Math.cos(z),
verS = C * Math.sin(z),
horS = C * Math.cos(z),
lat = bef[1] - ((bef[1] - aft[1]) * (verS / verB)),
lng = (aft[0] - bef[0]) * (horS / horB) + bef[0];
best.d = d;
best.dp = calcDist(bef[1], bef[0], l[0], l[1]);
best.ll = [lat, lng];
}
});
L.circle(best.ll, 3, {color: 'black'}).bindPopup(String(best.d)).addTo(map);
L.polyline([l,best.ll]).addTo(map)
adjStops.push({adjusted: best.ll, metersFromPrior: best.dp, original: s});
});
return adjStops;
};
function calcDist (lat1, lng1, lat2, lng2) {
var R = 6371000,
rad = (Math.PI / 180),
x = (lng2 - lng1) * rad,
y = (lat2 - lat1) * rad;
return R * Math.sqrt((x * x) + (y * y));
};
</script>
</html>