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rivm.html
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<html>
<head>
<title>RIVM Covid data</title>
<meta charset=utf-8 />
<meta http-equiv=“Pragma” content=”no-cache”>
<meta http-equiv=“Expires” content=”-1″>
<meta http-equiv=“CACHE-CONTROL” content=”NO-CACHE”>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="keywords" content="covid,statistics,netherlands,rivm">
<meta name="author" content="Willem Hengeveld, [email protected]">
<meta name="description" content="show rivm.nl (The Dutch health institute) covid information.">
<style>
#controlsdiv {
position:fixed;
right:0px;
top:100px;
width:120px;
z-index:5;
}
#tablediv {
position:absolute;
top:140px;
left:0px;
right:140px;
}
</style>
<script src="filter.js" ></script>
<script src="plot.js" ></script>
<script src="gemeenten.js" ></script>
<script src="jsutils.js" ></script>
<script language=javascript><!--
const RIVMURL = "https://data.rivm.nl/covid-19/COVID-19_aantallen_gemeente_cumulatief.json";
var mincases = 50;
var minpop = 10000;
class Filter {
constructor()
{
this.cutoff = 1/7;
this.bvalue = 0;
this.filt = null;
this.updfilt();
}
updfilt()
{
// update the global filter with the new cutoff and b values.
if (this.cutoff==0) {
// no filter
this.filt = null;
}
else if (this.bvalue==0) {
// smoothing
this.filt = new Smoothing(Math.round(1/this.cutoff));
}
else {
this.filt = new LowPass(this.cutoff, this.bvalue);
}
}
hasfilter()
{
return this.cutoff != 0;
}
calc(vec)
{
return this.filt.calc(vec);
}
setcutoff(t)
{
t = Number(t);
this.cutoff = t ? 1/t : 0;
this.updfilt();
}
setdepth(t)
{
t = Number(t);
this.bvalue = t ? 4/t : 0;
this.updfilt();
}
getcutofftext()
{
return this.cutoff ? (1/this.cutoff).toFixed(0)+" days" : "off"
}
getdepthtext()
{
return this.bvalue ? (4/this.bvalue).toFixed(0) : "smoothing"
}
getcutoffvalue()
{
return this.cutoff ? 1/this.cutoff : 0;
}
getdepthvalue()
{
return this.bvalue ? 4/this.bvalue : 0;
}
};
var filt = new Filter();
var g_graphvalues;
var g_rdaysa = 7;
var g_rdaysb = 14;
function hidedetailgraph()
{
var canvas = document.getElementById("graphdiv");
canvas.style.visibility = 'hidden';
var tbl = document.getElementById('tablediv');
tbl.style.visibility = 'visible';
}
function showdetailgraph()
{
var gdiv = document.getElementById("graphdiv");
gdiv.style.visibility = 'visible';
var tdiv = document.getElementById('tablediv');
tdiv.style.visibility = 'hidden';
gdiv.style.position = "absolute";
gdiv.style.top = window.scrollY;
}
// todo: change my plotting fns to always take (x,y) pairs
function updatedetailgraph()
{
var canvas = document.getElementById("detailgraph");
var plot = new Plot(canvas);
for (var i=0 ; i<7 ; i++)
{
var stepped = [];
for (var x=i ; x<g_graphvalues.length ; x+=7)
stepped.push([x, g_graphvalues[x]]);
plot.setgraph(i, stepped);
}
plot.setgraph(7, g_graphvalues);
if (filt.hasfilter()) {
var values = filt.calc(g_graphvalues);
plot.setgraph(8, values);
}
plot.rescale();
plot.display();
}
function makestepgraph(values)
{
colors = [
"#b22727", "#b29727", "#5fb327", "#2797b3", "#2727b3", "#9727b3", "#b2275f"
];
// create a graph for the list of values, optionally applying the filter.
var td = el('td');
var canvas = el('canvas');
td.append(canvas);
var cvx = (x) => 2*x;
canvas.width = cvx(values.length);
canvas.height = 40;
var ymax = Math.max(...values);
var ymin = Math.min(...values);
values = values.map( y => (y-ymin)/(ymax-ymin) );
var cvy = (y) => (canvas.height-5-y*(canvas.height-10));
var ctx = canvas.getContext("2d");
for (var i=0 ; i<7 ; i++) {
ctx.strokeStyle = colors[i];
ctx.fillStyle = colors[i];
ctx.beginPath();
ctx.moveTo(cvx(i), cvy(values[i]));
for (var x=i+7 ; x<values.length ; x+=7)
ctx.lineTo(cvx(x), cvy(values[x]));
ctx.stroke();
}
return td;
}
function makegraph(values)
{
// create a graph for the list of values, optionally applying the filter.
var td = el('td');
var canvas = el('canvas');
td.append(canvas);
var origvalues = [...values];
canvas.addEventListener('click', (() => { g_graphvalues = origvalues; showdetailgraph(); update(); } ))
var cvx = (x) => 2*x;
canvas.width = cvx(values.length);
canvas.height = 40;
var ofs = 0;
if (filt.hasfilter()) {
values = filt.calc(values);
if (filt.bvalue && filt.cutoff) {
values = values.slice(Math.ceil(1/filt.bvalue), -Math.ceil(1/filt.bvalue))
ofs = Math.ceil(1/filt.bvalue);
cvx = (x) => 2*(x + ofs);
}
}
var ymax = Math.max(...values);
var ymin = Math.min(...values);
values = values.map( y => (y-ymin)/(ymax-ymin) );
var cvy = (y) => (canvas.height-5-y*(canvas.height-10));
var ctx = canvas.getContext("2d");
ctx.beginPath();
ctx.moveTo(cvx(0), cvy(values[0]));
for (var x=1 ; x<values.length ; x++)
ctx.lineTo(cvx(x), cvy(values[x]));
ctx.stroke();
return td;
}
function calcdifferences(table)
{
// calculate the difference between entries in the table.
var res = [];
var prev;
for (var ent of table)
{
if (prev)
res.push({
gevallen:ent.gevallen-prev.gevallen,
overleden:ent.overleden-prev.overleden,
ziekenhuis:ent.ziekenhuis-prev.ziekenhuis});
prev = ent;
}
return res;
}
function makerow(name, data, gi)
{
// create a row in the table
var tr = el('tr');
tr.append(el('td', name));
var inwoners = gi ? gi.inwoners : 0;
if (inwoners < minpop)
return;
var popdensity = inwoners / gi.land;
tr.append(makenumtd(inwoners));
var table = Object.entries(data).sort().map( ([k,v])=>v );
var diff = calcdifferences(table);
var today = table[table.length-1];
var fourdays = table[table.length-1-g_rdaysa];
var lastweek = table[table.length-8];
var last14 = table[table.length-1-g_rdaysb];
tr.append(makenumtd(today.gevallen/inwoners*100000, 1));
var weekincidence = (today.gevallen-lastweek.gevallen)/inwoners*100000;
tr.append(makenumtd(weekincidence, 1));
if (weekincidence < mincases)
return;
tr.append(makenumtd(weekincidence/popdensity, 1));
var rval = last14 ? (today.gevallen-fourdays.gevallen)/(today.gevallen-last14.gevallen)*g_rdaysb/g_rdaysa : 0;
tr.append(makenumtd(rval, 2));
tr.append(makegraph(diff.slice(-90).map( e => e.gevallen )));
var weekincidence = (today.overleden-lastweek.overleden)/inwoners*100000;
tr.append(makenumtd(weekincidence, 1));
tr.append(makegraph(diff.slice(-90).map( e => e.overleden )));
tr.append(makestepgraph(diff.slice(-90).map( e => e.gevallen )));
tr.append(makestepgraph(diff.slice(-90).map( e => e.overleden )));
return tr;
}
function createheader(th)
{
// create the table header row
var headers = [ "Municipality", "population", "total/100k", "cases<br>/week/100k", "cppkm", "rval", "casegraph", "deaths<br>/week/100k", "deathsgraph", "dayofweek" ];
var tr = th.insertRow(0);
for (var h of headers) {
var c = el('th');
c.innerHTML = h;
tr.appendChild(c);
}
}
function makesliders()
{
// create the sliders for the 'controlsdiv'
return [
makeslider("smoothing:<br>", "cutoff", 0, 20, filt.getcutoffvalue(), t => filt.setcutoff(t), () => filt.getcutofftext()),
makeslider("depth:", "depth", 0, 100, filt.getdepthvalue(), t => filt.setdepth(t), () => filt.getdepthtext()),
makeslider("mincases:", "mincases", 0, 800, 50, t => mincases = Number(t), () => mincases.toFixed(0)),
makeslider("minpop:", "minpop", 0, 100, 10, t => minpop = Number(t)*1000, () => (minpop/1000).toFixed(1)+"K"),
makeslider("r1:", "r1", 1, 14, 7, t => g_rdaysa = Number(t), () => g_rdaysa.toFixed(0)+"days"),
makeslider("r2:", "r2", 1, 28, 14, t => g_rdaysb = Number(t), () => g_rdaysb.toFixed(0)+"days"),
];
}
function bygembydate(table)
{
// reorganize the source data by municipality and date
var dict = {};
function addto(d, key, date, src)
{
if (!d[key]) d[key] = { };
if (!d[key][date]) d[key][date] = { overleden:0, ziekenhuis:0, gevallen:0 };
d[key][date].overleden += Number(rec.Deceased);
d[key][date].ziekenhuis += Number(rec.Hospital_admission);
d[key][date].gevallen += Number(rec.Total_reported);
}
for (rec of table)
{
var date = rec.Date_of_report;
var name = rec.Municipality_name;
if (name) {
// herindelingen:
// 2021-01-01 : Appingedam, Delfzijl en Loppersum zijn samengevoegd tot: Eemsdelta
// 2021-01-01 : Haaren is opgeheven, en verdeeld over Boxtel, Oisterwijk, Vught en Tilburg.
// 2021-01-01 : Hengelo is van naam veranderd, in: Hengelo (O.)
if (name == "Loppersum" || name == "Delfzijl" || name == "Appingedam")
name = "Eemsdelta";
else if (name=="Hengelo (O.)")
name = "Hengelo";
addto(dict, name, date, rec);
}
var prov = rec.Province ? rec.Province.startsWith("Frys")? "Provincie Friesland" : "Provincie "+rec.Province : "null";
addto(dict, prov, date, rec);
addto(dict, "Nederland", date, rec);
}
return dict;
}
function start()
{
// This function is called from body.onLoad, starts the fetch,
// and creates the controls and tables.
fetch(RIVMURL, { cache: 'no-store' }).then(r => r.json()).then( r => { g_table = bygembydate(r); update(); });
var div = document.getElementById("controlsdiv");
div.append(...makesliders());
var div = document.getElementById("tablediv");
var tab = el('table');
tab.id = "table";
tab.cellSpacing = 0;
tab.cellPadding = 5;
tab.border = true;
createheader(tab.createTHead());
div.appendChild(tab);
add_sorter(tab);
var gdiv = document.getElementById("graphdiv");
gdiv.addEventListener('click', (() => { g_graphvalues = null; hidedetailgraph(); update(); } ))
gdiv.width = 800;
gdiv.height = 500;
var canvas = document.getElementById("detailgraph");
canvas.width = 800;
canvas.height = 500;
}
function update()
{
if (g_graphvalues) {
updatedetailgraph();
return;
}
// the table has three body sections, one for the whole country,
// one section with provinces, and one with the list of municipalities.
// The three sections always stay in the same order, entries
// within a section can be sorted
var bodies = [];
var tbody = el('tbody');
name = "Nederland";
data = g_table[name];
var row = makerow(name, data, ginfo[name]); if (row) tbody.append(row);
bodies.push(tbody);
var tbody = el('tbody');
Object.entries(g_table).forEach( ([name, data]) => { if (!name.startsWith("Provincie")) return; var row = makerow(name, data, ginfo[name]); if (row) tbody.append(row); } );
bodies.push(tbody);
var tbody = el('tbody');
Object.entries(g_table).forEach( ([name, data]) => { if (name.startsWith("Provincie") || name=="Nederland") return; var row = makerow(name, data, ginfo[name]); if (row) tbody.append(row); } );
bodies.push(tbody);
var tab = document.getElementById('table');
tab.replaceChildren(tab.tHead, ...bodies);
if (tab.currentsortcolumn)
sortbycolumn(tab, tab.currentsortcolumn);
var infor = document.getElementById("infodiv").getBoundingClientRect();
var tabler = document.getElementById("tablediv").getBoundingClientRect();
if (infor.bottom > tabler.top) {
var tdiv = document.getElementById("tablediv")
tdiv.style.top = 20;
var adiv = document.getElementById("authordiv")
adiv.style.position = "absolute";
adiv.style.top = 0;
var idiv = document.getElementById("infodiv");
idiv.style.position = "absolute";
idiv.style.top = 30;
idiv.style.zIndex = 0;
idiv.style.opacity= 0.1;
}
}
function sortbycolumn(table, th)
{
// sort each section by the specified column.
// the 'th' object has extra properties: asc and colnr
const getCellValue = (tr, idx) => tr.children[idx].innerText || tr.children[idx].textContent;
const comparer = (idx, asc) => (a, b) => ((v1, v2) =>
v1 !== '' && v2 !== '' && !isNaN(v1) && !isNaN(v2) ? v1 - v2 : v1.toString().localeCompare(v2)
)(getCellValue(asc ? a : b, idx), getCellValue(asc ? b : a, idx));
for (var oldtbody of Array.from(table.tBodies)) {
var newtbody = table.createTBody();
Array.from(oldtbody.children)
.sort(comparer(th.colnr, th.asc))
.forEach(tr => newtbody.append(tr) );
table.removeChild(oldtbody);
}
table.currentsortcolumn = th;
}
function add_sorter(table)
{
// add column sorters to the specified table.
table.currentsortcolumn = null;
table.querySelectorAll('th').forEach(th => {
th.colnr = Array.from(th.parentNode.children).indexOf(th);
th.asc = true;
th.addEventListener('click', (() => { th.asc = !th.asc; sortbycolumn(table, th); } ))
});
}
--></script>
</head>
<body onLoad="start()">
<div id="infodiv">
Data from <a href="https://data.rivm.nl/covid-19/">rivm</a>.
More tables:
<a href="owid.html">country info</a>,
<a href="rivm.html">Dutch municipalities</a>,
<a href="vac.html">Worldwide vaccinations</a>,
<a href="usvac.html">US vaccinations</a>.<br>
<br>
This table shows the current Covid-19 infection levels in the various Dutch municipalities and provinces.
Click table headers to sort, slide the filter to smooth the graphs, slide 'cutoff' up to turn off smoothing filter, use `mincases` to show less entries.
Note that the filtered graphs will be shorter, this can be adjusted with the 'bvalue' slider, this makes the filter less accurate. Click on the graph for a detailed graph view.
The colored graphs are the graphs for the days of the week, all mondays, all tuesdays, etc.
<br><p>
</div>
<div id="authordiv">
Created by Willem Hengeveld <<a href="mailto:[email protected]">[email protected]</a>>, <a href="https://itsme.home.xs4all.nl/">homepage</a>, <a href="https://github.com/nlitsme/covidcalculations">source code</a>.
</div>
<div id="controlsdiv"></div>
<div id="tablediv"></div>
<div id="graphdiv"> <canvas id="detailgraph"></canvas> </div>
<div id="weekdiv"> </div>
</body>
</html>