Some time ago I wrote about a Shell Script for calculating confidence intervals. Since I also do a lot of number crunching with PHP (hey, it’s web-based and works great with an SQL server for the data!) I wrote a PHP script to get the job done. Here’s how. Read the rest of this entry »
Doing discrete event (network) simulations; which termination criterion do you use? This article concerns OMNeT++/MiXiM but could easily be generalised. Read the rest of this entry »
If you have your data in an array (or matrix for that matter) and want to perform operations on it, most programming languages have foreach statement which lets you easily iterate all values. Matlab, actually, does not differ much. Read the rest of this entry »
Sometimes Matlab does not always perform as expected. This can be because of the IEEE 754 binary double precision floating point (double) representation used by Matlab: there is a finite number of digits to represent a number and this may not always be enough. We discuss how to use the Symbolic Toolkit to circumvent this. Read the rest of this entry »
Moving files to (and from) a GNU/Linux box is trivial for those well-seasoned in the use of the commandline. For Mac or windows users who need to make use of a Linux box (read my article on Clustercomputing with Torque) this may be the first problem they encounter. Easily overcome, though tough if you don’t know how it works. Read the rest of this entry »