package oplot

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 0.71

• 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. ~pas: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)

Types of points

Main Oplot functions

This module contains all plotting functions.