adv_tree_plot: Plot Taxonomy Tree Graph
In bradwest-wk/xbrlr: Tools for XBRL Taxonomy Analytics and Visualization in R

Saves a png image of a network tree (from an igraph object) at a user specified size with the given plot tile.

1 2	adv_tree_plot(edgelist, usage_file, out_file, roots, out_width = 5760, out_height = 5760, title)

`edgelist`	A csv consisting of two columns (parent and children) of relationships between elements
`usage_file`	An optional csv of usage counts for the elements with two columns, the element and the count for the given time period
`out_file`	The output file for the png image
`roots`	An optional vector of element names that should act as roots. Their label text size will be increased relative to other elements
`out_width`	the size of the output width in pixels
`out_height`	output height in pixels
`title`	title of the plot