Treemap

The treemap visualization tool can be built with the whole data set or with a filtered data subset. The treemap is hierarchical, using levels depending on the criteria we choose, coloring leaf nodes by another criterium. This is a very eye-catching way to find things in common in a huge quantity of data, but also is useful to detect the more or the less common values in a general view of data. We can use the treemap to feed the overlapping visualization tool in order to visualize in detail the information, or we go down the hierarchy and filter the data shown using another criterion.