Inxight's Table Lens
Inxight's Table Lens is a table whose rows compress down into tiny
bars, the length of which represent the values of the table cells.
(Users can click on specific rows th see ordinary-looking table
rows, but that's not what I want to talk about here.) One of the
wonderful things about this visualization is its ability to sort on
any column -- when the data is highly correlated, as in this example,
the user can see that correlation easily.
The dataset shown here is houses for sale in Santa Clara County,
California. In this screenshot, the user has clicked on the Bedroom
column header, thus sorting on that variable: the more bedrooms,
the longer the blue bar. Previously, the stable-sorted table was
sorted on Square Foot (representing the size of the house), so you
see a secondary "sawtooth" pattern there; it sorts all houses with
four bedrooms, for instance, by size. The Baths variable almost
mirrors the Square Foot attribute, and so does Price, which indicates
a rough correlation. It makes intuitive sense -- the more bedrooms
a house has, the more bathrooms it's likely to have, and the bigger
it's likely to be.
You can imagine other questions you can answer by this kind of
interactive graphic. Does ZIP code correlate to price? How
strong is the correlation between price and square footage? Do
certain realtors work only in certain cities? How many realtors