Represent the hierarchical structure of the taxonomic information of a reference database as a set of nested rectangles (treemap).
refdb_plot_tax_treemap(x, cols = NULL, freq_labels = c(0.01, 0.003))
| x | a reference database. |
|---|---|
| cols | a vector of column names referring to taxonomic levels
to include in the treemap. If not provided ( |
| freq_labels | a numeric vector of length two to adjust the number of printed labels (see Details). |
A ggplot2 (ggraph) object. This means the plot can be further customized using ggplot2 compatible functions.
TODO
Only the columns provided in the cols argument are represented
in the treemap. Large labels are printed for the highest rank, while light
text labels are printed for the lowest rank
Intermediate ranks are drawn but their names are not shown.
The number of labels printed are determined by freq_labels.
The first value gives the threshold
for the highest rank (large labels) and the second value gives
the threshold for the lowest rank (light text labels).
The underlying graph is computed using the non-exported function
igraph_from_taxo.