Plots the structure of a semtree object. This function is
similar to plot.semtree, but it does not print the parameter values in
the leaf nodes and labels the leaf nodes instead.
plotTreeStructure(tree, type = 2, no.plot = FALSE, ...)a semtree object.
Type of plot. See prp from rpart.plot.
logical value; if TRUE structure of the tree is printed to the console.
additional arguments passed to prp from rpart.plot.