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Aside

e - like everywhere

Everybody doing any kind of geometry, calculus or higher algebra will have stumbled over this number:

2.71828182845904523536028747135266249775724709369995...

More commonly it is known as e , Euler's number. You may wonder, where does this number come from and why is it so important? Well... If you are like me that is: waiting for simulations to finish, having 20 minutes of spare time on your hands, and having a tenacious drive to understand things. So come along as I explain two different ways that result explain where this beautiful number comes from.

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MATLAB® and Objects

Working with objects once a project becomes sufficiently complex makes it much easier to keep track of things. MATLAB® (a.k.a. MATrix LABoratory) is a nice product by a company called MathWorks that makes matrix manipulation incredibly easy. For us engineers and academics it is the standard goto, regardless if we need to rapid prototype some functionality or develop a complex and convoluted system. Only recently did I discover a whole hidden side of  MATLAB®: classes! And because I am an incredibly big fan of those beasts I decided to write a quick summary of how to use them.

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My trip to Germany and back

When I last drove to Munich and back, in order to visit my family and girlfriend, I decided to do something especially geeky: track my driving progress. The reason behind me tracking myself was two folded. For one I wanted to see if I could write a full app, front- and back-end to track myself across Europe, but mostly I wanted to keep my folks in the loop of where I am. Usually this was done by repetitively calling or, when having a break, posting or texting many to notify them of my progress. But this is neither live, precise, nor is it a pretty solution. Over a few posts (still to come) I will show you how I:

  • designed the iOS app (in Swift with MVC paradigm),
  • made a horribly insecure web server to track the (sometimes out of order) data, and
  • displayed the entire journey (in correct order) on a Google Map on my webpage.

But for now, here are the tracking results and me waffling about my journey.

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