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hacolp-cds/mapbox-hacolp-github/Website/HACOLP_template_Legend.html

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<link rel="shortcut icon" href="assets/ico/favicon.ico">
<title>Historical Atlast of Canada</title>
<!-- jQuery -->
<script src="https://code.jquery.com/jquery-3.2.1.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link rel="stylesheet" href="https://code.jquery.com/ui/1.10.4/themes/flick/jquery-ui.css">
<!-- Mapbox -->
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.37.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.37.0/mapbox-gl.css' rel='stylesheet' />
<style>
/* Full Screen Mapbox + Navbar edits */
html, body {
height:100%;
width: 100%;
margin:0;
overflow:hidden;
}
#map {
height:100%;
width:100%
}
/*Container bottom left*/
#console {
position: absolute;
width: 420px;
margin: 10px;
padding: 10px 20px;
background-color: white;
bottom:20px;
z-index:10000;
}
#console hr {
margin-left:-20px;
margin-right:-20px;
color: #123455;
height: 1px;
border: 0;
border-top: 1px solid #ccc;
padding: 0;
}
.mapboxgl-popup {
max-width: 400px;
}
.mapboxgl-popup-content {
margin:0;
padding:10px;
padding-bottom: 0;
}
.mapboxgl-popup-content h5{
margin:0;
font-size:15px;
margin-right:15px;
margin-bottom:5px;
}
#popup > li {
border:0;
padding:0;
margin:0;
margin-left:20px
}
h1 {
font-size: 20px;
margin-top:0
}
h2 {
font-size: 14px;
}
a {
text-decoration: none;
color: #2DC4B2;
}
.label {
width: 15%;
display: inline-block;
text-align: center;
}
/*Mapbox Legend */
.legend {
font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
background-color: white;
}
/* legend test */
.legend-container {
position: absolute;
bottom: 0px;
right: 0px;
padding: 0px 10px;
margin-bottom: 30px;
z-index: 1;
max-width: 200px
}
/* Legend title */
.legend h2 {
padding-top: 8px;
margin:0;
text-align: center;
}
.legend p {
margin: 0;
padding-left:10px;
padding-right:10px;
text-align: center;
}
.legend hr {
color: #123455;
border: 0;
border-top: 1px solid #ccc;
padding: 0;
margin-top:5px;
margin-bottom:5px
}
.legend-key {
display: inline-block;
/*size of color key*/
width: 30px;
height: 15px;
/*position of color key*/
margin-right: 15px;
margin-left: 10px;
}
</style>
</head>
<body>
<!-- Map Container positioned below Bootsrap bar-->
<div id='map'>
</div>
<!-- Bottom right Legend -->
<div class='legend-container'>
<div class='legend' id='legend' >
<h2>Population Density</h2> <p>in persons per km<sup>2</sup></p>
<hr/>
<div class='legend' id='cd-legend' >
</div>
<hr/>
<!-- <b> tag bolding text -->
<p><b>by census division and selected cities</b></p>
</div>
</div>
<script>
//Mapbox GL API Access token
mapboxgl.accessToken = 'pk.eyJ1IjoiYnlyb25tb2xkb2Zza3kiLCJhIjoiY2lrNXh0Y2s1MDBoZnY2a3RldHpwZXlicSJ9.mXxviu6Tv9tq9uPusa1qKg';
//Declare map options
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/byronmoldofsky/cj2q57drs00302rqm2lsrwjq3',
center: [-95.0, 55.0],
minZoom: 3,
// Layer maxZoom is set to 9 below, will not display beyond zoom level. Prevents the map view from zooming beyong that point as well
maxZoom:9,
zoom: 3
});
// disable map rotation using right click + drag
map.dragRotate.disable();
// disable map rotation using touch rotation gesture
map.touchZoomRotate.disableRotation();
// Add zoom and rotation controls to the map.
map.addControl(new mapboxgl.NavigationControl());
// arrays that will be used to style the layer census division
var breaks = [
// stop domain values must appear in ascending order
// Pop Dens threshold [0] Color [1]
[0.0, 'rgb(204,204,204)'],
[0.0001, 'rgb(255,255,204)'],
[0.5, 'rgb(255,255,102)'],
[2.0, 'rgb(255,229,153)'],
[4.0, 'rgb(255,204,102)'],
[8.0, 'rgb(255,178,0)'],
[12.0, 'rgb(204,153,48)'],
[20.0, 'rgb(204,102,51)'],
[30.0, 'rgb(204,0,0)'],
[100.0, 'rgb(153,51,51)'],
[1000.0, 'rgb(102,51,0)'],
];
// arrays that will be used to populate the legend
var legendLabels = [
// Label text that will appear in the legend [0]
['No Population'],
['up to 0.5'],
['>0.5 - 2'],
['>2 - 5'],
['>5 - 8'],
['>8 - 12'],
['>12 - 20'],
['>20 - 30'],
['>30 - 100'],
['>100 - 1 000'],
['>1 000 - 10 000'],
];
// The slice() method returns the selected elements in an array, as a new array object. The original array will not be changed.
// https://www.w3schools.com/jsref/jsref_slice_array.asp
// The reverse() method reverses the order of the elements in an array.
// https://www.w3schools.com/jsref/jsref_reverse.asp
// This is used to reverse the ordering of the legend
// The legendsLabels arrays could have been provided in reverse order and not required slice().reverse(). but for this example were provided reversed for consistency
breaksRev = breaks.slice().reverse();
legendLabelsRev = legendLabels.slice().reverse();
map.on('load', function() {
// Load the legend from the HTML document
var legend = document.getElementById('cd-legend');
// Define map layer, sets a Layer id and options
map.addLayer({
'id': 'cd-popdensity',
'source': {
'type': 'vector',
'url': 'mapbox://byronmoldofsky.7g9ujcjr'
},
'source-layer': 'cds_1851_1961_merge_year_WMAS-9rtzuv',
'type': 'fill',
'filter': ['==', 'YEAR_', 1851],
'paint': {
'fill-color': {
// Set polygon fill color based on attribute for population density CDPOPDENS
property: 'CDPOPDENS',
type : 'interval',
// Loading array declared in the breaks variable
stops: breaks,
},
'fill-opacity': 1
}
},
// place the layer beneath this layer in the basemap
'admin-2-boundaries-dispute'
);
// Create legend and style the key/color
// Using Javascript for each method. The forEach() method calls a provided function once for each element in an array, in order.
// https://www.w3schools.com/jsref/jsref_forEach.asp
breaksRev.forEach(function(layer, i){
// Creating elements to fill the legend div with id = 'cd-legend'
// each stop gets a 'row'
var item = document.createElement('div');
//add a 'key' to the row. A key will be the color key
var key = document.createElement('span');
//add a value variable to the 'row' in the legend
var value = document.createElement('span');
//the key will take on the shape and style properties defined here, in the HTML
key.className = 'legend-key';
// the background color is retreived from the breaks array
key.style.backgroundColor = layer[1];
// give the value variable a placeholder id that we can access and update with custom labels
value.id = 'legend-value-' + i;
//add the key (color key) to the legend row
item.appendChild(key);
//add the placeholder value to the legend row
item.appendChild(value);
// Add row to the legend
legend.appendChild(item);
});
legendLabelsRev.forEach(function(layer, i){
//as we iterate through the arrays get the correct row, and add the appropriate text
document.getElementById('legend-value-' + i).textContent = layer[0];
});
// Click to open callout
// When a click event occurs near a feature, open a popup at the location of
// the feature, with HTML description from its properties
map.on('click', function(e) {
var features = map.queryRenderedFeatures(e.point, { layers: ['cd-popdensity'] });
// if the features have no info, return nothing
if (!features.length) {
return;
}
var feature = features[0];
// Populate the popup and set its coordinates
// based on the feature found
var popup = new mapboxgl.Popup()
.setLngLat(e.lngLat)
// Census Division
.setHTML('<div id="popup" class="popup" style="z-index: 10;"> <h5>' + feature.properties['PROVNAME'] + ', ' +'CD: ' + feature.properties['CDNAME'] + '</h5>' +
'<li class="list-group-item"> <b>Population:</b> ' + feature.properties['CDPOP'] + " </li>" +
'<li class="list-group-item"> <b>Population Density:</b> ' + feature.properties['CDPOPDENS'] + ' people per km' + " </li>" +
'<li class="list-group-item"> <b>Year:</b> ' + feature.properties['YEAR_'] + " </li>" + '</div>')
.addTo(map);
});
// Use the same approach as above to indicate that the Census Division polygon areas are clickable
// by changing the cursor style to 'pointer' when mouse over the Census Division Polygons
map.on('mousemove', function(e) {
var features = map.queryRenderedFeatures(e.point, { layers: ['cd-popdensity'] });
map.getCanvas().style.cursor = (features.length) ? 'pointer' : '';
});
// CD boundaries Line/Arc Layer
map.addLayer({
'id': 'cd-bounds-arc',
'type': 'line',
'filter': ['==', 'YEAR_', 1851],
'source': {
type: 'vector',
url: 'mapbox://byronmoldofsky.bbjisli6'
},
'source-layer': 'cds_1851_1961_arcs_merge_year-9q88va',
'layout': {
'visibility': 'visible',
'line-join': 'round',
'line-cap': 'round'
},
'paint': {
'line-color': '#877b59',
'line-width': 1
}
});
// Provincial Boundaries Line/Arc layer
map.addLayer({
'id': 'provs-bounds-arc',
'type': 'line',
'filter': ['==', 'YEAR_', 1851],
'source': {
type: 'vector',
url: 'mapbox://byronmoldofsky.6zorlyrz'
},
'source-layer': 'boundaries_1851_1961_arcs_mer-1rrn56',
'layout': {
'visibility': 'visible',
'line-join': 'round',
'line-cap': 'round'
},
'paint': {
'line-color': '#ada182',
'line-width': 2.5
}
});
// Provincial Boundaries point/label layer
// byronmoldofsky.aajek76z
// boundaries_1851_1961_cent_mer-73ngaf
// Symbol Layer, added to the mapbox style
map.addLayer({
'id': 'provincial-boundary-label',
'type': 'symbol',
'source': {
type: 'vector',
url: 'mapbox://byronmoldofsky.aajek76z'
},
'source-layer': 'boundaries_1851_1961_cent_mer-73ngaf',
'filter': ['==', 'YEAR_', 1851],
'layout': {
'text-font': ['Open Sans Bold', 'Arial Unicode MS Bold'],
'text-size': 10,
'text-field': '{PROV_NAME}',
'text-anchor': 'center',
'text-transform': 'uppercase',
'text-letter-spacing': 0.2,
'text-offset': [0, 1.5]
},
'paint':{
'text-halo-color': '#FFFFFF',
'text-halo-width': 1,
'text-halo-blur' :1,
'text-opacity': 1,
},
});
});
</script>
</body>
</html>