funcToIgraph: Visualization of functions and expressions as trees
Description
The following functions plot R expressions and functions as trees. The igraph package
is required for most of these functions.
exprToGraph transforms an R expression into a graph given as a character vector
of vertices V and a even-sized numeric vector of edges E. Two elements i and i+1 in E
encode a directed edge from V[i] to V[i+1].
funcToIgraph and exprToIgraph return an igraph graph object for an R
function or an R expression.
Usage
funcToIgraph(func)
exprToIgraph(expr)
exprToGraph(expr)
Value
The result (see the details section).