Dinkla, KasperWestenberg, M. A.Timmerman, H. M.Hijum, S.A.F.T. vanWijk, J. J. vanH. Hauser, H. Pfister, and J. J. van Wijk2014-02-212014-02-2120111467-8659https://doi.org/10.1111/j.1467-8659.2011.01963.xWe propose visual analytics techniques to support concurrent comparison of hundreds of cumulatively weighted instances of a single hierarchy. This includes a node-link representation of the hierarchy where nodes depict the weights of all instances with high-density heat maps that are grouped and aligned to ease cross-referencing. Hierarchy exploration is facilitated by smoothly animated expansion and collapse of its branches. Detailed infor- mation about hierarchy structure, weights, and meta-data is provided by secondary linked visualizations. These techniques have been implemented in a prototype tool, in which the computational analysis concerns have been strictly separated from the visualization concerns. The analysis algorithms are extensible via a script engine. We discuss the effectiveness of our techniques for the visual analytic process of microbe community profiling experts.I.3.6 [Computer Graphics]Methodology and techniquesInteraction techniquesJ.3 [Computer Applications]Life and Medical SciencesBiology and genetics