mlpost 0.9 · OCaml Package

Create and draw trees

This module provides high-level means for creating and drawing Trees

type t

The type of trees

type arrow_style =

| Directed
(*
edges are directed and an arrow is drawn at the end of an edge
*)
| Undirected
(*
edges are undirected and no arrow is drawn
*)

The style of arrows between nodes

type edge_style =

| Straight
(*
edges are straight lines between nodes
*)
| Curve
(*
edges are curved lines between nodes
*)
| Square
(*
edges are straight lines and branch out from the sides of nodes
*)
| HalfSquare
(*
edges are straight lines and branch out from below nodes
*)

There are several styles available for edges

val leaf : Box.t -> t

Creation

leaf b creates a leaf with Box b.

val node : 
  ?ls:Num.t ->
  ?cs:Num.t ->
  ?arrow_style:arrow_style ->
  ?edge_style:edge_style ->
  ?stroke:Color.t ->
  ?brush:Brush.t ->
  ?pen:Pen.t ->
  ?sep:Num.t ->
  Box.t ->
  t list ->
  t

node label children creates a node with label label and a list of children children. Default arrow_style is Directed. Default edge_style is Straight.

ls (level sep): vertical distance between levels. The default value is 1.0. A negative value draws the tree upward.
cs (children sep): horizontal distance between siblings. The default value is 0.2. Optional arguments are the same as in leaf.

val nodel : 
  ?ls:Num.t ->
  ?cs:Num.t ->
  ?arrow_style:arrow_style ->
  ?edge_style:edge_style ->
  ?stroke:Color.t ->
  ?brush:Brush.t ->
  ?pen:Pen.t ->
  ?sep:Num.t ->
  Box.t ->
  (t * (Command.position * Picture.t)) list ->
  t

Similar to node but with labels on edges. Labels are taken into account only when edge_style is Straight.

val bin : 
  ?ls:Num.t ->
  ?cs:Num.t ->
  ?arrow_style:arrow_style ->
  ?edge_style:edge_style ->
  ?stroke:Color.t ->
  ?brush:Brush.t ->
  ?pen:Pen.t ->
  ?sep:Num.t ->
  Box.t ->
  t ->
  t ->
  t

bin label l r creates a binary node with label label and children l and r. Optional arguments are the same as in leaf.

val to_box : t -> Box.t

val draw : ?debug:bool -> t -> Command.t

module Simple : sig ... end

package mlpost