Plot using a tree-like layout — layout

This layout function was specifically designed to display Orphanet classifications. Indeed, it only contains from/to relationships, so the latter must be oriented from top to bottom (or bottom to top if reverse_y is TRUE).

The function was designed to be used with plot.igraph() (layout argument).

The associated vertical positions are obtained using vertical_positions.

Usage

layout_tree(graph, reverse_y = TRUE)

vertical_positions(graph)

Arguments

graph: The graph to display.
reverse_y: If TRUE, display from top to bottom.

Value

An adapted layout to plot nodes from Orpha classifications

Examples

graph = get_ancestors('303', output='graph')

plot(graph)

plot(graph, layout=igraph::layout_as_tree)

plot(graph, layout=layout_tree)


df_y = vertical_positions(graph)