/usr/share/doc/libplplot11/examples/ocaml/x05.ml is in libplplot-dev 5.9.9-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | (* $Id: x05.ml 10463 2009-09-23 20:56:58Z hezekiahcarty $
Histogram demo.
*)
open Plplot
let pi = atan 1.0 *. 4.0
let npts = 2047
(*--------------------------------------------------------------------------*\
* Draws a histogram from sample data.
\*--------------------------------------------------------------------------*)
let () =
(* Parse and process command line arguments *)
plparseopts Sys.argv [PL_PARSE_FULL];
(* Initialize plplot *)
plinit ();
(* Fill up data points *)
let delta = 2.0 *. pi /. float_of_int npts in
let data = Array.init npts (fun i -> sin (float_of_int i *. delta)) in
plcol0 1;
plhist data (-1.1) 1.1 44 [PL_HIST_DEFAULT];
plcol0 2;
pllab "#frValue" "#frFrequency"
"#frPLplot Example 5 - Probability function of Oscillator";
plend ();
()
|