/
index.html
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index.html
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<html>
<head>
<script src="https://d3js.org/d3.v4.min.js"></script>
<link rel="stylesheet" href="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/themes/css/cartodb.css">
<script src="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/cartodb.js"></script>
<script src="vendor/leaflet-hash.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet-geocoder-mapzen/1.4.1/leaflet-geocoder-mapzen.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet-geocoder-mapzen/1.4.1/leaflet-geocoder-mapzen.js"></script>
<!--[if lte IE 8]>
<link rel="stylesheet" href="https://libs.cartocdn.com/cartodb.js/v2/themes/css/cartodb.ie.css" />
<![endif]-->
<style>
html, body {width:100%; height:100%; padding: 0; margin: 0; background: turquoise;}
#cartodb-map { width: 100%; height:100%; background: transparent;}
#label-control {
font-family: 'Helvetica Neue', Helvetica, sans-serif;
font-weight: 400;
font-size: 14px;
line-height: normal;
display: block;
}
</style>
<script>
var map;
function init(){
var showLabels = false;
var showBuildings = true;
var showParcels = true;
// Parse query parameters:
var search_values = location.search.replace('\?','').split('&');
search_values.forEach(function(param) {
key_value = param.split("=");
if (key_value.length == 2) { // skip if it doesn't parse well
if (key_value[0] == "labels" && key_value[1] == "true") {
showLabels = true;
}
if (key_value[0] == "background" && key_value[1].match(/^\w+$/)) { // make sure no weird characters
if (d3.color(key_value[1])) { // see if d3 parses it as a CSS color
d3.select("body").style("background-color", key_value[1]);
}
if (d3.color('#' + key_value[1])) { // see if d3 parses it as a hex value
d3.select("body").style("background-color", '#' + key_value[1]);
}
}
}
});
// initiate leaflet map
map = new L.Map('cartodb-map', {
center: [34.0522,-118.2437],
zoom: 14
})
var parcels_style = [
"#lacounty_parcels{",
" polygon-fill: #F7F7F7;",
" polygon-opacity: 1;",
" line-color: #FFF;",
" line-width: 0;",
" line-opacity: 1;",
"}",
"#lacounty_parcels [ shape_area <= 183259633.853] {",
" polygon-fill: #252525;",
"}",
"#lacounty_parcels [ shape_area <= 18749.2191] {",
" polygon-fill: #525252;",
"}",
"#lacounty_parcels [ shape_area <= 9615.76605] {",
" polygon-fill: #737373;",
"}",
"#lacounty_parcels [ shape_area <= 7550.60995] {",
" polygon-fill: #969696;",
"}",
"#lacounty_parcels [ shape_area <= 6661.9965] {",
" polygon-fill: #BDBDBD;",
"}",
"#lacounty_parcels [ shape_area <= 5924.23825] {",
" polygon-fill: #D9D9D9;",
"}",
"#lacounty_parcels [ shape_area <= 5043.57735] {",
" polygon-fill: #F7F7F7;",
"}"
].join('\n');
var buildings_style = [
"#lariac_buildings_2008{",
" polygon-fill: #252525;",
" polygon-opacity: 1;",
" line-color: #FFF;",
" line-width: 0;",
" line-opacity: 1;",
"}",
"#lariac_buildings_2008 [ shape_area <= 1507358.01989] {",
" polygon-fill: #F7F7F7;",
"}",
"#lariac_buildings_2008 [ shape_area <= 3074.36767757] {",
" polygon-fill: #D9D9D9;",
"}",
"#lariac_buildings_2008 [ shape_area <= 2379.88198146] {",
" polygon-fill: #BDBDBD;",
"}",
"#lariac_buildings_2008 [ shape_area <= 1904.96072563] {",
" polygon-fill: #969696;",
"}",
"#lariac_buildings_2008 [ shape_area <= 1424.7760669] {",
" polygon-fill: #737373;",
"}",
"#lariac_buildings_2008 [ shape_area <= 830.578055424] {",
" polygon-fill: #525252;",
"}",
"#lariac_buildings_2008 [ shape_area <= 437.62214556] {",
" polygon-fill: #252525;",
"}"
].join('\n');
var parcels_style_1 = [
"#lacounty_parcels{",
" polygon-fill: #252525;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var parcels_style_2 = [
"#lacounty_parcels{",
" polygon-fill: #525252;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var parcels_style_3 = [
"#lacounty_parcels{",
" polygon-fill: #737373;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var parcels_style_4 = [
"#lacounty_parcels{",
" polygon-fill: #969696;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var parcels_style_5 = [
"#lacounty_parcels{",
" polygon-fill: #BDBDBD;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var parcels_style_6 = [
"#lacounty_parcels{",
" polygon-fill: #D9D9D9;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var parcels_style_7 = [
"#lacounty_parcels{",
" polygon-fill: #F7F7F7;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var buildings_style_1 = [
"#lariac_buildings_2008{",
" polygon-fill: #252525;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var buildings_style_2 = [
"#lariac_buildings_2008{",
" polygon-fill: #525252;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var buildings_style_3 = [
"#lariac_buildings_2008{",
" polygon-fill: #737373;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var buildings_style_4 = [
"#lariac_buildings_2008{",
" polygon-fill: #969696;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var buildings_style_5 = [
"#lariac_buildings_2008{",
" polygon-fill: #BDBDBD;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var buildings_style_6 = [
"#lariac_buildings_2008{",
" polygon-fill: #D9D9D9;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var buildings_style_7 = [
"#lariac_buildings_2008{",
" polygon-fill: #F7F7F7;",
" polygon-opacity: 1;\nline-color: #FFF;\nline-width: 0;\nline-opacity: 1;",
"}"
].join('\n');
var mapLayers = {};
// Add parcels layer
cartodb.createLayer(map, {
user_name: 'stamen-org',
type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels",
cartocss: parcels_style
}]
}, {
cartodb_logo:false,
}).addTo(map).done(function(layer) { mapLayers['parcels'] = layer; layer.setZIndex(2); })
/*
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels WHERE shape_area > 18749.219",
cartocss: parcels_style_1
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(1); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels WHERE shape_area > 9615.766 AND shape_area <= 18749.219",
cartocss: parcels_style_2
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(1); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels WHERE shape_area > 7550.610 AND shape_area <= 9615.766",
cartocss: parcels_style_3
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(1); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels WHERE shape_area > 6661.997 AND shape_area <= 7550.610",
cartocss: parcels_style_4
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(1); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels WHERE shape_area > 5924.238 AND shape_area <= 6661.997",
cartocss: parcels_style_5
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(1); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels WHERE shape_area > 5043.577 AND shape_area <= 5924.238",
cartocss: parcels_style_6
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(1); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lacounty_parcels WHERE shape_area <= 5043.577",
cartocss: parcels_style_7
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(1); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building' AND shape_area <= 437.622",
cartocss: buildings_style_1
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(2); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building' AND shape_area > 437.622 AND shape_area <= 830.578",
cartocss: buildings_style_2
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(2); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building' AND shape_area > 830.578 AND shape_area <= 1424.776",
cartocss: buildings_style_3
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(2); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building' AND shape_area > 1424.776 AND shape_area <= 1904.961",
cartocss: buildings_style_4
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(2); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building' AND shape_area > 1904.961 AND shape_area <= 2379.882",
cartocss: buildings_style_5
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(2); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building' AND shape_area > 2379.882 AND shape_area <= 3074.368",
cartocss: buildings_style_6
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(2); })
cartodb.createLayer(map, { user_name: 'stamen-org', type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building' AND shape_area > 3074.368",
cartocss: buildings_style_7
}]
}, { cartodb_logo:false, }).addTo(map).done(function(layer) { layer.setZIndex(2); })
*/
// Add buildings layer
cartodb.createLayer(map, {
user_name: 'stamen-org',
type: 'cartodb',
sublayers: [{
sql: "SELECT * FROM lariac_buildings_2008 WHERE code = 'Building'",
cartocss: buildings_style
}]
}, {
cartodb_logo:false,
}).addTo(map).done(function(layer) { mapLayers['buildings'] = layer; layer.setZIndex(3); })
// then finally add the full thing to get the correct blending effects
var layerUrl = 'https://stamen.carto.com/u/stamen-org/api/v2/viz/ea17c2c0-961c-11e4-97a4-f23c91504230/viz.json';
cartodb.createLayer(map, layerUrl, {
cartodb_logo:false,
legends:false,
}).addTo(map).done(function(layer) { mapLayers['everything'] = layer; layer.setZIndex(4); })
var labelLayer = L.tileLayer('https://tiles.stadiamaps.com/tiles/stamen_toner_labels/{z}/{x}/{y}.png', {id: 'labelLayer', zIndex: 100});
if (showLabels) // off by default
labelLayer.addTo(map);
// scale bar
L.control.scale().addTo(map);
// Add URL hash for zoom/lat/lon
var hash = new L.Hash(map);
map.attributionControl.setPrefix('Map by <a href="https://stamen.com">Stamen Design</a> (<a href="https://stamen.com/using-open-data-to-learn-about-los-angeles-5b30192a68b0/">about</a>)');
// Mapzen geocoder
L.control.geocoder('search-hNyVAbJ').addTo(map);
d3.select("#label-control")
.append("div")
.append("label")
.text("show map labels")
.append("input")
.property("checked", showLabels)
.attr("type", "checkbox")
.on("change", function(evt) {
if (this.checked) {
map.addLayer(labelLayer);
var location_string = location.href;
if (location_string.match("labels=false")) {
history.pushState({},null,location_string.replace("labels=false","labels=true"));
} else {
// if it's not in the URL
// then there might not be a '?' either:
if (location_string.match("\\?")) // means there's already a search query
history.pushState({},null,location_string.replace("#","&labels=true#"));
else
history.pushState({},null,location_string.replace("#","?labels=true#"));
}
} else {
map.removeLayer(labelLayer);
var location_string = location.href;
if (location_string.match("labels=true")) {
history.pushState({},null,location_string.replace("labels=true","labels=false"));
} else {
// if it's not in the URL
// then there might not be a '?' either:
if (location_string.match("\\?")) // means there's already a search query
history.pushState({},null,location_string.replace("#","&labels=false#"));
else
history.pushState({},null,location_string.replace("#","?labels=false#"));
}
}
// update the URL location
//var location_string = location;
});
d3.select("#label-control")
.append("div")
.append("label")
.text("show buildings")
.append("input")
.property("checked", showBuildings)
.attr("type", "checkbox")
.on("change", function(evt) {
if (this.checked) {
map.addLayer(mapLayers['buildings']);
if (showParcels)
map.addLayer(mapLayers['everything']);
} else {
map.removeLayer(mapLayers['buildings']);
if (showParcels)
map.removeLayer(mapLayers['everything']);
}
});
d3.select("#label-control")
.append("div")
.append("label")
.text("show parcels")
.append("input")
.property("checked", showParcels)
.attr("type", "checkbox")
.on("change", function(evt) {
if (this.checked) {
map.addLayer(mapLayers['parcels']);
if (showBuildings)
map.addLayer(mapLayers['everything']);
} else {
map.removeLayer(mapLayers['parcels']);
if (showBuildings)
map.removeLayer(mapLayers['everything']);
}
});
}
</script>
</head>
<body onload="init()">
<!-- copied from the default CARTO overlays -->
<div class="cartodb-overlay overlay-text desktop" style="z-index: 4; max-width: 500px; margin-left: 0px; margin-top: 0px; top: 55px; left: 66px; right: auto; bottom: auto; display: block; background-color: rgba(0, 0, 0, 0.701961);">
<div class="content">
<div class="text widget_text" style="z-index: 4; color: rgb(255, 255, 255); text-align: left; font-size: 20px;"><strong>
Los Angeles buildings and parcels
</strong></div>
</div>
</div>
<div class="cartodb-overlay overlay-text desktop" style="z-index: 4; max-width: 300px; margin-left: 0px; margin-top: 0px; top: 119px; left: 66px; right: auto; bottom: auto; display: block; background-color: rgba(0, 0, 0, 0.701961);">
<div class="content">
<div class="text widget_text" style="z-index: 4; color: rgb(255, 255, 255); text-align: left; font-size: 14px;">
Small buildings are dark, and larger buildings are lighter in color.
<br>Parcels are the reverse: small parcels are light and larger parcels are darker
</div>
</div>
</div>
<div class="cartodb-overlay overlay-text desktop content text widget_text" style="z-index: 4; margin-left: 0px; margin-top: 0px; top: 55px; right: 60px; left: auto: bottom: auto; display: block; background-color: rgba(0, 0, 0, 0.701961);">
<div class="content">
<div id="label-control" class="text widget_text" style="z-index: 4; color: rgb(255, 255, 255); text-align: left; font-size: 14px;">
</div>
</div>
</div>
<div id='cartodb-map'></div>
<!-- cut and paste legend from the one on CARTO. Will rebuild it later -->
<div class="cartodb-legend-stack" style="display: block;"><div class="cartodb-legend choropleth" style="display: block;">
<div class="legend-title">Building Area</div><ul><li class="min"> smaller</li><li class="max"> larger</li><li class="graph count_441"> <div class="colors">
<div class="quartile" style="background-color:#252525"></div>
<div class="quartile" style="background-color:#525252"></div>
<div class="quartile" style="background-color:#737373"></div>
<div class="quartile" style="background-color:#969696"></div>
<div class="quartile" style="background-color:#BDBDBD"></div>
<div class="quartile" style="background-color:#D9D9D9"></div>
<div class="quartile" style="background-color:#F7F7F7"></div>
</div></li></ul></div><div class="cartodb-legend choropleth" style="display: block;">
<div class="legend-title">Parcel Area</div><ul><li class="min"> smaller</li><li class="max"> larger</li><li class="graph count_441"> <div class="colors">
<div class="quartile" style="background-color:#F7F7F7"></div>
<div class="quartile" style="background-color:#D9D9D9"></div>
<div class="quartile" style="background-color:#BDBDBD"></div>
<div class="quartile" style="background-color:#969696"></div>
<div class="quartile" style="background-color:#737373"></div>
<div class="quartile" style="background-color:#525252"></div>
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