Skip to content

Instantly share code, notes, and snippets.

@rfriberg

rfriberg/index.html

Last active November 7, 2017 17:18
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save rfriberg/38694be3e8ffb30ac6ac8302960c7ebd to your computer and use it in GitHub Desktop.
Save rfriberg/38694be3e8ffb30ac6ac8302960c7ebd to your computer and use it in GitHub Desktop.
Download ZIP
Isochrone Demo
Raw
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>Isochrone service demo</title>
<meta charset="utf-8">
<link rel="stylesheet" href="https://mapzen.com/js/mapzen.css">
<script src="https://mapzen.com/js/mapzen.min.js"></script>
<style>
html,body{margin: 0; padding: 0}
#map {
height: 100%;
width: 100%;
position: absolute;
}
.isochrone-control {
background: rgba(255, 255, 255, 0.85);
padding: 5px 10px;
width: 230px; /*width: 120px;*/
border-radius: 5px;
}
.isochrone-control div {
margin: 2px 0;
}
.isochrone-control h3 {
margin: 5px 2px 0 2px;
}
.isochrone-control ul {
padding: 0;
margin: 0;
}
.isochrone-control li {
list-style: none;
width: 110px;
display: inline-block;
}
.isochrone-control .emoji {
width: 30px;
display: inline-block;
text-align: center;
}
.isochrone-control .legend-box {
display: inline-block;
width: 20px;
height: 10px;
}
.isochrone-control .legend-box.first {
background-color: #40cc40;
}
.isochrone-control .legend-box.second {
background-color: #9fbf40;
}
.isochrone-control .legend-box.third {
background-color: #bf8f40;
}
.isochrone-control .legend-box.fourth {
background-color: #bf4040;
}
.isochrone-control .legend-label {
padding-left: 5px;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
// Mapzen API key (replace key with your own)
// To generate your own key, go to https://mapzen.com/developers/
L.Mapzen.apiKey = 'mapzen-JA21Wes';
var scene, mode, time;
// Set default lat / lng
var lat = 49.282;
var lng = -123.1207;
var tooltip = L.tooltip();
var map = L.Mapzen.map('map', {
center: [lat, lng],
zoom: 12,
debugTangram: true,
scene: 'scene.yaml'
});
// Move zoom control to the top right corner of the map
map.zoomControl.setPosition('topright');
// Mapzen Search box (replace key with your own)
// To generate your own key, go to https://mapzen.com/developers/
var geocoder = L.Mapzen.geocoder('mapzen-JA21Wes');
geocoder.addTo(map);
// add lat/lon hash
L.Mapzen.hash({
map: map
});
var defaults = {
pedestrian: {
label: 'walking',
times: [5,10,15,20],
emoji: '🚶'
},
bicycle: {
label: 'bike',
times: [15,30,45,60],
emoji: '🚴'
},
auto: {
label: 'car',
times: [15,30,60,90],
emoji: '🚗'
},
multimodal: {
label: 'transit',
times: [30,60,90,120],
emoji: '🚌'
}
};
// Custom Leaflet Control - isochrone parameters
var IsochroneControl = L.Control.extend({
options: {
position: 'bottomleft'
},
onAdd: function (map) {
var container = L.DomUtil.create('div', 'isochrone-control');
container.innerHTML = '<div>'
+ ' <h3>Travel by:</h3>'
+ ' <ul id="travel-modes">'
+ ' <li><input type="radio" name="modes" id="pedestrian" value="pedestrian" /><span class="emoji">' + defaults['pedestrian'].emoji + '</span><span class="label">' + defaults['pedestrian'].label + '</span></li>'
+ ' <li><input type="radio" name="modes" id="bicycle" value="bicycle" checked="checked" /><span class="emoji">' + defaults['bicycle'].emoji + '</span><span class="label">' + defaults['bicycle'].label + '</span></li>'
+ ' <li><input type="radio" name="modes" id="auto" value="auto" /><span class="emoji">' + defaults['auto'].emoji + '</span><span class="label">' + defaults['auto'].label + '</span></li>'
+ ' <li><input type="radio" name="modes" id="multimodal" value="multimodal" /><span class="emoji">' + defaults['multimodal'].emoji + '</span><span class="label">' + defaults['multimodal'].label + '</span></li>'
+ ' </ul><br>'
+ ' <h3>Estimated times:</h3>'
+ ' <div id="travel-times">'
+ ' <i>Click on the map to set starting point</i>'
+ ' </div>'
+ '</div>';
L.DomEvent.on(container, "click", this.onClick);
return container;
},
update: function (time) {
L.DomUtil.get('travel-times').innerHTML = (time
? '<ul>'
+ ' <li><span class="legend-box first"></span><span class="legend-label">' + time[0] + ' minutes</span></li>'
+ ' <li><span class="legend-box second"></span><span class="legend-label">' + time[1] + ' minutes</span></li>'
+ ' <li><span class="legend-box third"></span><span class="legend-label">' + time[2] + ' minutes</span></li>'
+ ' <li><span class="legend-box fourth"></span><span class="legend-label">' + time[3] + ' minutes</span></li>'
+ '</ul>'
: '<i>Click on the map to set starting point</i>');
},
onClick: function (e) {
// stop propagation to avoid triggering onMapClick
e.stopPropagation();
updateMap();
}
});
var isochroneControl = new IsochroneControl();
map.addControl(isochroneControl);
// map click handler
function onMapClick(e) {
// Update the global lat / lng
lat = e.leaflet_event.latlng.lat;
lng = e.leaflet_event.latlng.lng;
updateMap();
}
function updateMap() {
reloadIsochrone();
reloadEmoji();
isochroneControl.update(time);
}
function reloadIsochrone() {
// get mode from radio input
mode = document.querySelector('input[name = "modes"]:checked').value;
time = defaults[mode].times;
var url = 'https://matrix.mapzen.com/isochrone?json=';
var json = {
locations: [{"lat":lat, "lon":lng}],
costing: mode,
contours: [{"time":time[0]},{"time":time[1]},{"time":time[2]},{"time":time[3]}],
polygons: true,
denoise: 0.5,
generalize: 150
};
url += escape(JSON.stringify(json));
url+= '&api_key=mapzen-c4C1Lbb';
scene.setDataSource('isochrone_live', { type: 'GeoJSON', url: url });
}
function reloadEmoji() {
var emoji = defaults[mode].emoji;
// define GeoJSON point for emoji label
var emojiJSON = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {
"name": emoji
},
"geometry": {
"type": "Point",
"coordinates": [lng, lat]
}
}
]
};
scene.config.layers.emoji_label.visible = true;
scene.setDataSource('emoji_marker', { type: 'GeoJSON', data: emojiJSON });
}
function onMapHover(e) {
if (e.feature && e.feature.source_name == 'isochrone_live') {
document.getElementById('map').style.cursor = 'pointer';
var content = 'Less than <b>' + e.feature.properties.contour + ' minutes</b> away by ' + defaults[mode].label;
updateTooltip(e.leaflet_event.latlng, content);
} else {
tooltip.remove();
document.getElementById('map').style.cursor = '';
}
}
function updateTooltip(latlng, content) {
tooltip.setLatLng(latlng);
tooltip.setContent(content);
if (!tooltip.isOpen()) {
tooltip.addTo(map);
}
}
// Add a Tangram event listener
map.on('tangramloaded', function(e) {
var tangramLayer = e.tangramLayer;
scene = tangramLayer.scene;
tangramLayer.setSelectionEvents({
click: onMapClick,
hover: onMapHover
});
});
</script>
</body>
</html>
Raw
scene.yaml
# Author @burritojustice @rhonda_friberg - 2016
import:
- https://tangrams.github.io/blocks/global.yaml
- https://mapzen.com/carto/refill-style/refill-style.yaml
sources:
isochrone_live:
type: GeoJSON
url: 'https://matrix.mapzen.com/isochrone?json={"locations":[{"lat":53.5421,"lon":-113.4860}],"costing":"pedestrian","contours":[{"time":15},{"time":30},{"time":60},{"time":120}],"polygons":true,"denoise":0.2,"generalize":150}'
url_params:
api_key: mapzen-JA21Wes # (be sure to add your API key to pull in polygons from the server https://mapzen.com/developers)
layers:
roads:
data: { source: mapzen, layer: roads }
filter: { not: { kind: rail } }
draw:
lines:
interactive: false
width: 1px
order: global.feature_order
isochrone_polygons:
data: { source: isochrone_live }
draw:
polygons:
interactive: true
order: |
function() {
return 100 - ((feature.contour/120) * 10) ;
}
color: |
function() {
return feature.fill;
}
emoji_label:
data: { source: emoji_marker }
visible: false
draw:
text:
collide: false
font:
size: [[13, 30px], [20, 44px]]
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment