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index.html
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<!DOCTYPE html>
<html>
<head>
<title>Simple PA Legislative District Map</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" type="image/x-icon" href="docs/images/favicon.ico" />
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.3/dist/leaflet.css" />
<script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet.js"></script>
<style>
#map {
width: 600px;
height: 400px;
}
</style>
<style>#map { width: 800px; height: 500px; }
.info { padding: 6px 8px; font: 14px/16px Arial, Helvetica, sans-serif; background: white; background: rgba(255,255,255,0.8); box-shadow: 0 0 15px rgba(0,0,0,0.2); border-radius: 5px; } .info h4 { margin: 0 0 5px; color: #777; }
.legend { text-align: left; line-height: 18px; color: #555; } .legend i { width: 18px; height: 18px; float: left; margin-right: 8px; opacity: 0.7; }</style>
</head>
<body>
<div id='map'></div>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/PapaParse/4.2.0/papaparse.min.js"></script>
<script type="text/javascript" src="pa-house.js"></script>
<script type="text/javascript">
var map = L.map('map').setView([41.0, -77], 7);
var csv;
L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1Ijoibmt0IiwiYSI6IjdlenFJSUUifQ.uXNGvG2H_hJJE0UltStzBg', {
crossOrigin: true,
maxZoom: 18,
attribution: 'Map data © <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, ' +
'<a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
'Imagery © <a href="http://mapbox.com">Mapbox</a>',
id: 'mapbox.light'
}).addTo(map);
// control that shows state info on hover
var info = L.control();
info.onAdd = function (map) {
this._div = L.DomUtil.create('div', 'info');
this.update();
return this._div;
};
info.update = function (props) {
this._div.innerHTML = '<h4>PA House District</h4>' + (props ? '<b>' + props.LEG_DISTRI + '</b><br />' : 'Select a district');
};
info.addTo(map);
// get color depending on population density value
function getColor(support) {
return support === "Yes" ? 'green' :
support === "Maybe" ? 'gold' :
support === "No" ? 'firebrick' :
'grey';
}
function style(feature) {
return {
weight: 2,
opacity: 1,
color: 'white',
dashArray: '3',
fillOpacity: 0.7,
fillColor: getColor(feature.properties.support)
};
}
function highlightFeature(e) {
var layer = e.target;
layer.setStyle({
weight: 5,
color: '#666',
dashArray: '',
fillOpacity: 0.7
});
if (!L.Browser.ie && !L.Browser.opera && !L.Browser.edge) {
layer.bringToFront();
}
info.update(layer.feature.properties);
}
var geojson;
function resetHighlight(e) {
geojson.resetStyle(e.target);
info.update();
}
function zoomToFeature(e) {
map.fitBounds(e.target.getBounds());
}
map.attributionControl.addAttribution('Population data © <a href="http://census.gov/">US Census Bureau</a>');
Papa.parse("https://nicholastulach.github.io/fdpa-demo/PAHouse.csv", {
download: true,
header: true,
complete: function(results, file) {
geojson = L.geoJson(statesData, {
onEachFeature: function(feature, layer) {
var popupText = "";
var labelText = "";
if (feature.properties && feature.properties.LEG_DISTRI) {
popupText += "<b>District: " + feature.properties.LEG_DISTRI.toString() + "</b>";
labelText = feature.properties.LEG_DISTRI.toString();
var filtered = results.data.filter(function(data){return data.LEG_DISTRI == this;}, feature.properties.LEG_DISTRI.toString());
popupText += "<br>Volunteer Count: " + JSON.stringify(parseInt(filtered[0].volunteers));
feature.properties.support = filtered[0].support;
}
if (feature.properties && feature.properties.description) {
popupText += "<br>" + feature.properties.description.toString();
}
layer.bindPopup(popupText)/*.bindLabel(labelText)*/;
layer.on({
mouseover: highlightFeature,
mouseout: resetHighlight,
click: zoomToFeature
});
layer.setStyle({ fillColor: getColor(feature.properties.support)})
},
style: style
}).addTo(map);
},
error: function(error, file) {
console.log("An error occurred in Papa.parse:", error)
}
});
var legend = L.control({position: 'bottomright'});
legend.onAdd = function (map) {
var div = L.DomUtil.create('div', 'info legend'),
grades = ["Yes", "No", "Maybe"],
labels = [];
for (let grade of grades) {
labels.push(
'<i style="background:' + getColor(grade) + '"></i> ' + grade);
}
div.innerHTML = labels.join('<br>');
return div;
};
legend.addTo(map);
</script>
</body>
</html>