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dcopendata_ward_leaflet.html
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dcopendata_ward_leaflet.html
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<!DOCTYPE html>
<html>
<head>
<!-- Description: This sample demonstrates how to use clickable polygons to view information about the selected polygon -->
<!-- Attribution:
Leaflet Tutorials, Url: https://leafletjs.com/examples.html
Styling inspired by Esri Story Map: https://storymaps.esri.com/stories/2016/top-stories/
-->
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<title>Wards @ Washington, DC</title>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.2/dist/leaflet.css"/>
<script src="https://unpkg.com/leaflet@1.0.2/dist/leaflet.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<link rel="shortcut icon" type="image/x-icon" href="https://dc.gov/sites/default/files/favicon_0.ico">
<style>
body {
margin: 0;
padding: 0;
font-family: "open_sanssemi", sans-serif;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
a {
color: #fff;
font-family: 'open_sansregular', sans-serif;
}
/*styling for title bar and about pop over */
#title {
color: #FFF;
font-family: "open_sanssemibold", sans-serif;
padding: 3 0 0 4;
font-size: 24px;
line-height: 30px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.header {
position: relative;
padding: 15px 30px 25px 30px;
margin: auto;
z-index: 500;
background-color: rgb(12, 12, 12);
box-shadow: 0 3px 5px 0 rgba(0, 0, 0, .75);
opacity: 0.8;
}
#about {
padding: 10px 20px 20px 20px;
z-index: 4000;
position: absolute;
background-color: #505050;
color: white;
width: 700px;
left: 50%;
margin-left: -300px;
height: calc(100% - 200px);
top: 100px;
display: none;
overflow: hidden;
opacity: 0.95;
}
#dismiss-about {
cursor: pointer;
font-size: 30px;
float: right;
margin-bottom: 10px;
}
#inner {
width: 100%;
height: calc(100% - 60px);
overflow-y: auto;
-webkit-overflow-scrolling: touch;
}
</style>
</head>
<body>
<div id="map"></div>
<div class='header'>
<div id="title">Wards @ Washington, DC</div>
<div style="float:right;">
<a style="color:rgb(206,206,206);font-size:14px; margin-right:10px;"
href="https://github.com/DCgov/opendatadc-starterkit" target="_blank">This on Github</a>
<a style="color:rgb(206,206,206);font-size:14px;" href="javascript:void(0)"
onclick="openAbout()">About This Map</a>
</div>
</div>
<div id="about">
<a id="dismiss-about" onclick="closeAbout()">×</a>
<div id="inner">
<p style="font-size: 1.4em; text-transform: uppercase; text-align: center">About this map
</p>
<p style="font-size:1.2em;">
This sample demonstrates how to load polygons from DC Open Data to overlay a map</p>
<p><strong>Instructions</strong>
<br/> Click a ward on the map to display info</p>
<p><strong>Built with...</strong>
<br/> <a href="https://leafletjs.com/">Leaflet</a>, <a href="https://jquery.com/">jQuery</a></p>
<p><strong>Download Ward 2012 Data in GeoJSON</strong>
<br/><a href="https://opendata.arcgis.com/datasets/0ef47379cbae44e88267c01eaec2ff6e_31.geojson">https://opendata.arcgis.com/datasets/0ef47379cbae44e88267c01eaec2ff6e_31.geojson</a>
</p>
<p><strong>View Ward 2012 Data on DC Open Data</strong>
<br/><a href="http://opendata.dc.gov/datasets/ward-2012" target="_blank">https://opendata.arcgis.com/datasets/0ef47379cbae44e88267c01eaec2ff6e_31</a>
</p>
<p><strong>DC Open Data</strong>
<br/><a href="http://opendata.dc.gov" target="_blank">http://opendata.dc.gov</a></p>
<p><strong>Github Repository</strong>
<br/><a href="https://github.com/DCgov/opendatadc-starterkit" target="_blank">https://github.com/DCgov/opendatadc-starterkit</a>
</p>
<div id="logos" style="text-align: center">
<img src="https://moca.dc.gov/sites/default/files/styles/callout_interior_graphic/public/dc/sites/ocaf/agency_content/images/We%20Are%20Washington.png"
title="We are DC logo">
</div>
</div>
</div>
<script>
//Data source from DC Open Data
var wardGeoJsonUrl = "https://opendata.arcgis.com/datasets/0ef47379cbae44e88267c01eaec2ff6e_31.geojson";
//Replace with your own token
var accessToken = "<<use your own mapbox token>>";
//sets map functions including turning off the standard zoom buttons
//and setting intial map focus point
var map = L.map('map', {
center: [38.8929, -77.0252],
zoom: 12,
zoomControl: false
});
//Create map and load basemap tile layer
L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token={accessToken}', {
attribution: '© <a href="https://www.mapbox.com/about/maps/">Mapbox</a> © <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> <strong><a href="https://www.mapbox.com/map-feedback/" target="_blank">Improve this map</a></strong>',
id: 'mapbox/light-v10',
maxZoom: 17,
minZoom: 9,
accessToken: accessToken,
tileSize: 512,
zoomOffset: -1
}).addTo(map);
// Add our zoom control manually where we want to
var zoomControl = L.control.zoom({
position: 'bottomleft'
});
map.addControl(zoomControl);
//set style of ward layer
function style(feature) {
return {
weight: 2,
opacity: 0.8,
color: 'blue',
fillOpacity: 0.0
};
}
//Add DC Ward geojson to map
$.getJSON(wardGeoJsonUrl, function (data) {
var geojson = L.geoJson(data, {
style: style,
onEachFeature: function (feature, layer) {
//create popup for each ward polygon
layer.bindPopup(feature.properties.NAME + "<br>" + "Rep. " + feature.properties.REP_NAME + "," + "<br>" + feature.properties.REP_PHONE)
}
});
geojson.addTo(map);
});
//open About This panel
function openAbout() {
$("#about").show();
return false;
}
//close About This panel
function closeAbout() {
$("#about").hide();
return false;
}
</script>
</body>
</html>