Module OplotSource

Simple mathematical plotter library for ocaml with fast graphics (opengl), LaTeX display, and high quality vector output (xfig, postscript or PDF)

Source available on github.

• version 0.85

• author San Vũ Ngọc

Example

Oplot can be used in the toplevel. First load the library with

  #use "topfind"

  #thread

  #require "oplot"

You may open the Oplot.Plt module for easy access to all plot functions.

  open Oplot.Plt

Draw the graph of the sine function with

  let p = plot sin (-2.) 20.
  let a = axis 0. 0.;;

  display [ Color red; p; Color black; a ]

This will open a window with the graphics, which should look like this:

Press F for fullscreen toggle, CTRL-S for saving the image, and ESC or Q to close the window. Press h to see the list of active keys.

Of course you can play with it:

  let rec sh i =
    if i == 0 then []
    else
      let p =
        line_plot_f
          (fun x -> sin (x +. (float_of_int i /. 50.)))
          0. 20. ~step:0.05
      in
      let c =
        color (float_of_int i /. 50.) (1. -. (float_of_int i /. 50.)) 0.
      in
      c :: p :: sh (i - 1)
  ;;

  display (sh 50)

Main Oplot functions

Adding a new graphics backend

These signatures allow you to add another backend. An example is to use the old Graphics library, see oplot-graphics.