Graphviz Example: decision tree

rankdir=TB; // Top to Bottom layout

nodesep=0.5; // Horizontal spacing

ranksep=1.0; // Vertical spacing

// Root Node

node [shape=box, style=filled, color=lightblue]; // Decision nodes styling

"Is it raining?" [label="Is it raining?"];

// Level 1

node [shape=box, style=filled, color=lightyellow];

"Do you have an umbrella?" [label="Do you have an umbrella?"];

node [shape=ellipse, style=filled, color=lightgreen]; // Leaf nodes styling

"Take umbrella" [label="Take umbrella"];

"Don't go outside" [label="Don't go outside"];

"Enjoy your walk" [label="Enjoy your walk"];

// Edges

"Is it raining?" -> "Do you have an umbrella?" [label="Yes"];

"Is it raining?" -> "Enjoy your walk" [label="No"];

"Do you have an umbrella?" -> "Take umbrella" [label="Yes"];

"Do you have an umbrella?" -> "Don't go outside" [label="No"];

// Rank alignment

{ rank=same; "Take umbrella"; "Don't go outside"; }

}