Draws horseshoes - left child, up over, down to right child
Usage
rpart.branch(x, y, node, branch)
Arguments
x
x coordinates of nodes
y
y coordinates of nodes
node
description of node number
branch
controls shape of horseshoe (1 is default, 0 has no shoulder)
Value
Internal function, called by
plot.rpart
. Not usually called by user.
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