RCode2One common data preparation step, particularly with time series data, is conversion from wide form to long form, and vice-versa.

responsiveI’ve been developing websites for a long time – since the days of Netscape Navigator and Alta Vista. And, I’ve managed to learn a thing or two along the way. Recently a few of my friends have asked me for advice on how to get a blog or website up and running, where to find good deals, good customer service, what to look out for, etc.