expose compact hierarchy filter for TreeMap

TreeMaps are important hierarchical visualizations and navigating the hierarchy is an important interaction for treemaps. I do this all the time. So do my friends. Users are tyoically not modifying any of the other settings, but they need to navigate the hierarchy. The current way Spotfire presents this control is very wasteful of space, the most precious resource on the screen.

The treemap should therefore either expose the hierarchy slider as part of the visualization itself (horizontally as shown below), and as a slider in the Text Area (in addition to the checkbox). You should also be able to move the hierarchy slider to the top of the visualization (like you can do with some of the other legend controls).

The current control in the legend is useless - it takes up way too much space!

thanks,

JP