world-density-map/dev.html

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HTML

<!DOCTYPE html>
<html>
<head>
<title>World Population Density</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@1.2.0/dist/leaflet.css" integrity="sha512-M2wvCLH6DSRazYeZRIm1JnYyh22purTM+FDB5CsyxtQJYeKq83arPe5wgbNmcFXGqiSH2XR8dT/fJISVA1r/zQ==" crossorigin=""/>
<script src="https://unpkg.com/leaflet@1.2.0/dist/leaflet.js" integrity="sha512-lInM/apFSqyy1o6s89K4iQUKg6ppXEgsVxT35HbzUupEVRh2Eu9Wdl4tHj7dZO0s1uvplcYGmt3498TtHq+log==" crossorigin=""></script>
<style>
html, body {
height: 100%;
margin: 0;
}
#map { width: 100%; height: 100%; }
.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;
}
.detail-row {
line-height: 18px;
vertical-align: bottom;
}
.detail-col-left {
text-align: right;
}
</style>
</head>
<body>
<div id='foo'>
</div>
<div id='map'></div>
<script type="text/javascript" src="data/world/countries-dev.js"></script>
<script id="bar" type="text/template">
<b>{name}</b>
<table>
<tr class="detail-row">
<td class="detail-col-left">Fläche:</td><td>{area} km<sup>2</sup></td>
</tr>
<tr class="detail-row">
<td class="detail-col-left">Einwohner:</td><td>{population}</td>
</tr>
<tr class="detail-row">
<td class="detail-col-left">Dichte:</td><td>{density} / km<sup>2</sup></td>
</tr>
</table>
</script>
<script type="text/javascript">
function intlFormat(num)
{
return new Intl.NumberFormat().format(Math.round(num*10)/10).replace(',', '.');
}
function makeFriendly(num)
{
if(num >= 1000000000)
return intlFormat(num/1000000000)+' Mrd.';
if(num >= 1000000)
return intlFormat(num/1000000)+' Mio.';
if(num >= 1000)
return intlFormat(num/1000)+' Tsd.';
return intlFormat(num);
}
String.prototype.format = function() {
// Usage: 'The {0} is dead. Don\'t code {0}. Code {1} that is open source!'.format('ASP', 'PHP');
var formatted = this;
for (var i = 0; i < arguments.length; i++) {
var regexp = new RegExp('\\{'+i+'\\}', 'gi');
formatted = formatted.replace(regexp, arguments[i]);
}
return formatted;
};
function setData() {
geojson.remove();
geojson = L.geoJson(worldData[currentDataset], {
style: style,
onEachFeature: onEachFeature
}).addTo(map);
}
var map = L.map('map').setView([20, 20], 3);
var currentZoom = map.getZoom();
var currentDataset = 'world';
var worldData = { 'world' : countries };
map.on('zoomend', function(ev) {
if(map.getZoom() < currentZoom){
console.log('zoomed out to ' + map.getZoom());
}
currentZoom = map.getZoom();
if(currentZoom <= 6 && currentDataset != 'world'){
console.log('reset to world now');
currentDataset = 'world';
setData();
}
});
L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw', {
maxZoom: 18,
attribution: 'Map data &copy; <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) {
// console.log(props);
this._div.innerHTML = (props ? render(document.getElementById('bar'), {"name": props.name, "area": makeFriendly(props.area_total_km2), "population": makeFriendly(props.population), "density": props.density }) : render(document.getElementById('bar'), {"name": "World", "area": makeFriendly(149400000), "population": makeFriendly(9000000000), "density": Math.round(9000000000/149400000) }));
// this._div.innerHTML = '' + (props ? '<b>' + props.name + '</b><br />Fläche: ' + makeFriendly(props.area_total_km2) + ' km<sup>2</sup><br />' + 'Einwohner: ' + makeFriendly(props.population) + ' <br/>Dichte: ' + props.density + ' / km<sup>2</sup><br />': 'Hover over a country.<br />Click for regional data on:<br /><ul><li>Netherlands</li><li>England</li><li>USA</li></ul>');
// this._div.innerHTML = '<h4>Population Density</h4>' + (props ?
// '<b>' + props.name + '</b><br />' + props.density + ' humans / km<sup>2</sup>'
// : 'Hover over a country.<br />Click for regional data on:<br /><ul><li>Netherlands</li><li>England</li><li>USA</li></ul>');
};
info.addTo(map);
// get color depending on population density value
function getColor(d) {
return d > 1000 ? '#800026' :
d > 500 ? '#BD0026' :
d > 200 ? '#E31A1C' :
d > 100 ? '#FC4E2A' :
d > 50 ? '#FD8D3C' :
d > 20 ? '#FEB24C' :
d > 10 ? '#FED976' :
'#FFEDA0';
}
function style(feature) {
return {
weight: 2,
opacity: 1,
color: 'white',
dashArray: '3',
fillOpacity: 0.7,
fillColor: getColor(feature.properties.density)
};
}
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);
// console.log(map.view);
}
var geojson;
function resetHighlight(e) {
geojson.resetStyle(e.target);
info.update();
}
function zoomToFeature(e) {
// console.log(map.getZoom());
// console.log(map.getCenter());
// console.log(e);
console.log(e.target.feature.id);
map.fitBounds(e.target.getBounds());
var layer = e.target;
var countryid = layer.feature.id.toLowerCase();
currentDataset = countryid;
if(worldData[countryid] == undefined){
console.log('new data path', 'maps/' + countryid + '/provinces.geojson');
request(countryid, layer);
}else{
geojson.resetStyle(layer);
info.update();
geojson.remove();
geojson = L.geoJson(worldData[countryid], {
style: style,
onEachFeature: onEachFeature
}).addTo(map);
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);
}
}
function onEachFeature(feature, layer) {
layer.on({
mouseover: highlightFeature,
mouseout: resetHighlight,
click: zoomToFeature
});
}
geojson = L.geoJson(worldData[currentDataset], {
style: style,
onEachFeature: onEachFeature
}).addTo(map);
map.attributionControl.addAttribution('Population data by <a href="https://www.cia.gov/library/publications/download">CIA World Factbook</a> | <a href="https://data.worldbank.org/country">Worldbank</a> | <a href="https://en.wikipedia.org">Wikipedia</a>');
var legend = L.control({position: 'bottomright'});
legend.onAdd = function (map) {
var div = L.DomUtil.create('div', 'info legend'),
grades = [0, 10, 20, 50, 100, 200, 500, 1000],
labels = [],
from, to;
for (var i = 0; i < grades.length; i++) {
from = grades[i];
to = grades[i + 1];
labels.push(
'<i style="background:' + getColor(from + 1) + '"></i> ' +
from + (to ? '&ndash;' + to : '+'));
}
div.innerHTML = labels.join('<br>');
return div;
};
legend.addTo(map);
function request(countryid, layer){
const url = 'maps/{0}/provinces.geojson'.format(countryid);
var http = new XMLHttpRequest();
http.open('GET', url, true);
http.setRequestHeader("Accept","application/json");
http.send();
http.onreadystatechange = function()
{
console.log(http.readyState,http.status,http.responseText);
if (http.readyState != 4){
return;
}
if(http.status == 401){
console.error(http.responseText);
}
else if(http.status == 200){
var resp = JSON.parse(http.responseText);
console.log('ok');
worldData[countryid] = resp;
// statesData = worldData[countryid];
// console.log(statesData);
// console.log(target);
geojson.remove();
geojson = L.geoJson(worldData[countryid], {
style: style,
onEachFeature: onEachFeature
}).addTo(map);
geojson.resetStyle(layer);
info.update(layer.feature.properties);
}
}
}
function renderList(template, dataList) {
var templateHtml = template.innerHTML;
var listHtml = "";
var keys = Object.keys(dataList[0]);
for (var i = 0; i < dataList.length; i++) {
var itemHtml = templateHtml;
// console.log(itemHtml);
for(var j = 0; j < keys.length; j++){
itemHtml = itemHtml.replace(new RegExp("{"+keys[j]+"}", "g"), dataList[i][keys[j]]);
}
listHtml += itemHtml;
}
console.log(listHtml);
return listHtml;
}
function render(template, data) {
var templateHtml = template.innerHTML;
var listHtml = "";
var keys = Object.keys(data);
var itemHtml = templateHtml;
for(var j = 0; j < keys.length; j++){
itemHtml = itemHtml.replace(new RegExp("{"+keys[j]+"}", "g"), data[keys[j]]);
}
listHtml += itemHtml;
return listHtml;
}
// function onLoad(e) {
// document.getElementById("foo").innerHTML = render(document.getElementById("bar"), { "name": "entenhausen", "area" : "23km", "population" : "22M", "density" : "23.5" });
// }
// document.addEventListener('DOMContentLoaded',onLoad);
</script>
<!--
<script id="sipservers-table-row-error" type="text/template">
<tr class="error-table-row">
<td colspan="5">No data available.<br/>{msg}</td>
</tr>
</script>
function renderList(template, dataList) {
var templateHtml = template.innerHTML;
var listHtml = "";
var keys = Object.keys(dataList[0]);
for (var i = 0; i < dataList.length; i++) {
var itemHtml = templateHtml;
for(var j = 0; j < keys.length; j++){
itemHtml = itemHtml.replace(new RegExp("{"+keys[j]+"}", "g"), dataList[i][keys[j]]);
}
listHtml += itemHtml;
}
return listHtml;
}
document.getElementById("devices-table-rows").innerHTML = renderList(
document.getElementById("devices-table-row-error"), [{ 'msg' : result['data'] }]);
-->
</body>
</html>