archimedes 0.4.19 (latest)

Routines to draw basic axes systems in a 2-dimensional space. One can either draw axes separately using add_(x|y)_axis or use a full default axes system with box or cross.

type offset =

| Relative of float
(*
A relative offset is given in the Data coordinate system. So you can ensure that the axis is drawn at the other axis' origin (offset: Relative 0.)
*)
| Absolute of float
(*
An absolute offset is given in the Graph coordinate system and should have a value between 0 and 1. Using this kind of offset, one can ensure to always get the same rendering
*)

The axis can be padded using an offset. It is used to control where to place the axis (according to the other axis)

val x : 
  ?grid:bool ->
  ?major:(string * float) ->
  ?minor:(string * float) ->
  ?start:Arrows.style ->
  ?stop:Arrows.style ->
  ?tics:Tics.t ->
  ?offset:offset ->
  Viewport.t ->
  unit

x vp adds an x-axis to the viewport vp.

parameter major
is a couple (mark, size) drawn at each major tic position.

parameter start
the arrow ending style on the left (x0) (see the Arrows module)

parameter stop
the arrow ending style on the right (xend) (see the Arrows module)

parameter tics
the "tics policy" for this axis (see the Tics module)

parameter offset
where to place the axis (y-coordinate)

val y : 
  ?grid:bool ->
  ?major:(string * float) ->
  ?minor:(string * float) ->
  ?start:Arrows.style ->
  ?stop:Arrows.style ->
  ?tics:Tics.t ->
  ?offset:offset ->
  Viewport.t ->
  unit

y vp adds an y-axis to the viewport vp.

parameter start
the arrow ending style on the bottom (y0) (see the Arrows module)

parameter stop
the arrow ending style on the top (yend) (see the Arrows module)

parameter tics
the "tics policy" for this axis (see the Tics module)

parameter offset
where to place the axis (x-coordinate)

val box : ?grid:bool -> ?tics:Tics.t -> ?tics_alt:Tics.t -> Viewport.t -> unit

box vp A default system of axes consisting of four axes, one on each border of the viewport vp, resulting in a box surrounding the viewport.

parameter tics
the "tics policy" for the left and bottom axes (see the Tics module for more information over tics policies)

parameter tics_alt
the "tics policy" for the right and top axes (see the Tics module for more information over tics policies)

val cross : ?tics:Tics.t -> Viewport.t -> unit

cross vp A default axes system consisting of two axes, centered on the origin ((0, 0) in Data coordinates).

parameter tics
the "tics policy" of the axes (see the Tics module for more information over tics policies)

package archimedes