to your HTML Add class="sortable" to any table you'd like to make sortable Click on the headers to sort Thanks to many, many people for contributions and suggestions. Licenced as X11: http://www.kryogenix.org/code/browser/licence.html This basically means: do what you want with it. */ var stIsIE = /*@cc_on!@*/false; sorttable = { init: function() { // quit if this function has already been called if (arguments.callee.done) return; // flag this function so we don't do the same thing twice arguments.callee.done = true; // kill the timer if (_timer) clearInterval(_timer); if (!document.createElement || !document.getElementsByTagName) return; sorttable.DATE_RE = /^(\d\d?)[\/\.-](\d\d?)[\/\.-]((\d\d)?\d\d)$/; forEach(document.getElementsByTagName('table'), function(table) { if (table.className.search(/\bsortable\b/) != -1) { sorttable.makeSortable(table); } }); }, makeSortable: function(table) { if (table.getElementsByTagName('thead').length == 0) { // table doesn't have a tHead. Since it should have, create one and // put the first table row in it. the = document.createElement('thead'); the.appendChild(table.rows[0]); table.insertBefore(the,table.firstChild); } // Safari doesn't support table.tHead, sigh if (table.tHead == null) table.tHead = table.getElementsByTagName('thead')[0]; if (table.tHead.rows.length != 1) return; // can't cope with two header rows // Sorttable v1 put rows with a class of "sortbottom" at the bottom (as // "total" rows, for example). This is B&R, since what you're supposed // to do is put them in a tfoot. So, if there are sortbottom rows, // for backwards compatibility, move them to tfoot (creating it if needed). sortbottomrows = []; for (var i=0; i
Microsoft Excel is one of the most useful computer programs ever developed. The electronic spreadsheet program, which is bundled with Microsoft's Office suite of productivity software targeted to businesses, was estimated to have as many as 1.2 billion worldwide users in 2016, with 750 million using Excel.
But not all use the same version of Microsoft Excel. The spreadsheet software has been around since 1985 and has gone through multiple upgrades and editions during its 35 year history. Recently, in the United Kingdom, the differences in capabilities between the versions of Excel became an issue when the government lost track of 15,841 test results of people who tested positive for COVID-19. SNN's Matt Parker explains how that happened in the following 16 minute video....
With such a large, installed user base, lots of people have come to use Microsoft Excel in ways that stretch its capabilities, sometimes to the breaking point. In this case, reaching that breaking point resulted in the UK's National Health Service temporarily losing track of 15,841 positive COVID-19 test results.
If you're into big data analysis, you probably want to become familiar with Julia. But if you know how to program an application like Microsoft Excel to do what you want and you can keep within its capabilities, you certainly can use it. The trick is knowing its limits.
It's like the old saying: "To err is human, to really foul things up requires a computer." And if you want to guarantee failure on a grand scale, get the government involved.
In addition to being awarded the 2020 Christopher Zeeman Medal for his role in promoting maths to the public, Matt Parker is the author of Humble Pi: A Comedy of Maths Errors. So not only does he know what can go wrong with a spreadsheet, he knows what can go wrong with all kinds of maths! If you know someone who can benefit from that kind of knowledge, you now have a gift idea for them for Christmas....
Labels: coronavirus, math
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Closing values for previous trading day.
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