Time series annotation on trees
Sparklines are miniature time series used to provide high data-density complements to tables of summary statistics. They can be found in some financial stocks pages, for a thorough treatment, refer to
Tufte, Edward R., and P. R. Graves-Morris. The visual display of quantitative information. Vol. 2. No. 9. Cheshire, CT: Graphics press, 1983.
Each node in this tree corresponds to a taxonomic group, and leaves are annotated with sparklines giving the abundance of that class of microbes over time. The brush at the bottom is a single-brush simplification of timeboxing. The series in bold always correspond to a leaf node in bold. Updating the agglomeration level trims away all nodes below the associated depth and resizes the tree so it takes up all the space. The new leaf nodes correspond to coarser taxonomic subgroups. Note that unlike all other trees on this site, the one shown here is a phylogenetic -- not a taxonomic -- tree. Each sparkline is covered by a brush. Adjusting the region of the time series covered by this brush updates the node and edge sizes to reflect average abundances during the specified the interval.