Treemap is an application to create tree maps. It works by dividing the display surface so that the area of each entry is proportional to the data values. In addition to the classic treemap layout algorithm, TreeMap also features a number of alternative layouts such as a qualified variant that harmonizes aspect ratios of the rectangles, or the aesthetically pleasing circular, and Voronoi layouts. Treemaps import the data from a wide variety of file formats (including of course Excel), as well as connect to databases (such as MySQL and SQL Server). The visual appearance of a treemap is highly configurable. Size, color, height, and labels can be mapped to any attribute. Many options allow you to further fine-tune the display. Coloring schemes can be adjusted to the last detail and the resulting treemaps can be rendered flat, or with a pseudo-3D cushion look with customizable light source.
What's new in version 2.8
Version 2.8 has added support for TreeML file format and fixed categorical colormap does handle numerical variables properly when being loaded.