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
Last week, we shared our recent discovery of ZunZun's online 2-D and 3-D curve fitting applications, which we found to be an insanely great resource for number crunchers. This week, we're continuing our discovery series of just what's possible in math on the web with the Wolfram Integrator, which goes a long way to making calculus a lot easier to do!
The application is, to say the least, insanely great. Developed by Wolfram Research, the outfit behind Mathmatica and other high-powered math software, it features a very simple interface where the user only needs to know how to present a mathematical formula in a format similar to formulas used in Microsoft Excel or in the more common computing languages. The tool will integrate the entered formula and provide the resulting integrated equation as its output. The output is presented as a formula that only requires the user to apply their boundary conditions to solve the problem offline.
The genius of Wolfram's web application is that it minimizes the amount of time needed to search through tables of integrals to find an appropriate form when solving problems that require integration. Wolfram's Integrator, in essence, automates the process by performing the integration given the original formula. As an added bonus, wolfram's output results will also include links to the mathematical functions used in the integrated equation, which can be invaluable for some of the higher level functions.
Truly a cool tool for the higher math set!
Welcome to the blogosphere's toolchest! Here, unlike other blogs dedicated to analyzing current events, we create easy-to-use, simple tools to do the math related to them so you can get in on the action too! If you would like to learn more about these tools, or if you would like to contribute ideas to develop for this blog, please e-mail us at:
ironman at politicalcalculations
Thanks in advance!
Closing values for previous trading day.
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