As usual, the first thing we’ll need to do is boot up a stock image.
When I setup my Jekyll environment, I happened to use an ubuntu image as my starting point. I’m really not interested in going into the mostly political and opinionated argument over which is better – let’s just say that there are times when each is better. Centos is generally preferred for locked down enterprise ready...
I was analyzing some data for a friend earlier this week – not my data, and not public data, so nothing for me to really talk about. That doesn’t mean I can’t talk about how I did what I did.
Since it was essentially client data, I wanted to treat it with the utmost discretion in terms of security and privacy. The hard drive on my laptop isn’t currently encrypted (I know, shame...
Three years ago when I initially setup snail trail, I did it as an octopress site. Funny, when I opened the octopress site just now, I saw the latest post (three months ago) more or less started with the following quote:
If I’m being harsh, I’ll tell you that as it is now, Octopress is basically some guy’s Jekyll blog you can fork and modify.
That’s actually a big part of...
I started this project three years ago because I wanted to create an open/public data set of anonymized human movement data (geoloction, not body movement). I didn’t have any specific use cases in mind, but I could imagine a number of things that I’d be interested in doing if I had access to such a dataset. The main point was that I didn’t want to limit the use cases to my own imagination. A number...
Two’s complement math is like an odometer where you use the upper half of the values to represent negative numbers. In decimal terms if you had six digits – i.e. 999,999 was the highest the odometer went before rolling back over to 000,000 then you would simply treat the top half – 500,000 to 999,999 as negative values. 999,999 is one less that 000,000 so it would represent negative one. Likewise 999,9998 would represent negative...