Manipulating Data: Analysis Techniques, Part 3
http://johnnyholland.org/2009/08/10/manipulating-data/

Baty, Steve
Johnny Holland
2009

Abstract:

One of the key characteristics of a manipulation technique versus related techniques like transformation is that the underlying data remains unchanged. The main thing we’re doing is changing the relationship - logical or physical - that one piece of data has with another. Reorganizing the data helps us to identify patterns that may otherwise not be apparent. In fact, it is almost certain that most patterns won’t be visible at first glance. Let’s start by taking a more detailed look at some of the processes that contribute to the manipulation of data.