The first example that I want to show you come from a group of international researchers who developed this tool that is called LineUp. The main goal of LineUp is to help people compare different rankings according to a number of different metrics. So, say for instance, if a student wants to compare ranking of schools according to different parameters. As you may imagine, this is one of those situations where reordering information is probably very useful. So, let's take a look at the demo and I'll say a few more words about this tool. LineUp is an interactive technique to create, visualize, and explore multi-attribute rankings. This is the main LineUp interface. Let's assume we're prospective students looking for university. We've loaded the QS world university rankings dataset from 2012. Initially, lineUp is configured as a table based bar chart with columns for each attribute. LineUp supports different column types. Rank columns that show the rank of items. Label and categorical columns for contextual information, and score attribute columns. The header of this core attributes show their distribution. Columns can be moved, resized, removed, and restored. The row layout can be switched between a uniform layout and the fish eye layout. Items can be searched and filtered. We now limit the ranking to universities from the United States. With one click, we have created a simple ranking based on a single attribute. Next, we want to combine multiple attributes to reproduce the ranking methodology used in the QS world university ranking. We first create an empty combined column, and use drag-and-drop to add attributes. We can sort the column by double-clicking its header. To reproduce the exact weights used for the public ranking, we enter them directly. The width of the column reflects the weight. Weights can be adjusted interactively. As a future student, we might want to put more emphasis on the faculty student ratio. The weight changes are immediately applied and the ranking is updated. LineUp uses animation and colors to indicate rank changes. Animations are useful to track small changes. But bigger changes are difficult to follow. To better keep track of big changes, we use the snapshot feature. The slope graph separator acts as a barrier and splits the table into two independent rankings. If we now remove the citations attribute from the combined score, the changing slope angles indicate that New York University rises from the 18th position. As as you can see, LineUp is a very powerful tool to explore rankings according to different metrics. The main reason why I wanted to show it to you is because it's an excellent example of how reordering can play a major role in visualization.