Hcarty: /* Using the Quick_plot module */ Fix plot axis labeling

2009-10-18T20:06:40Z

‎Using the Quick_plot module: Fix plot axis labeling

Hcarty: Created page with '== Intro == The [http://caml.inria.fr OCaml] bindings for PLplot provide three means of accessing PLplot's functionality through three modules, Plplot, Plplot.Plot and Plplot.Qu…'

2009-10-06T16:42:30Z

Created page with '== Intro == The [http://caml.inria.fr OCaml] bindings for PLplot provide three means of accessing PLplot's functionality through three modules, Plplot, Plplot.Plot and Plplot.Qu…'

New page

== Intro ==

The [http://caml.inria.fr OCaml] bindings for PLplot provide three means of accessing PLplot's functionality through three modules, Plplot, Plplot.Plot and Plplot.Quick_plot. In versions 5.9.6 and later the OCaml sections of the [http://plplot.sourceforge.net/documentation.php PLplot documentation] includes a tutorial which introduces each of these modules. This tutorial is meant to expand on that material and allow for a simpler process for contributing improvements.

== Using the Quick_plot module ==

The main OCaml PLplot module is meant to be open'd:

open Plplot

From here, one can try out a quick plot of sin and cos:

Quick_plot.func [sin; cos] (-3.14, 3.14)

which gives output which looks something like this:

[[File:quick_plot_bare.png]]

That's great, but it would be even better if there were labels so that we know what the axes mean and a legend to show which line corresponds with which function. We can do that:

Quick_plot.func
~labels:("Angle (radians)", "Amplitude", "A few functions")
~names:["sin"; "cos"]
[sin; cos] (-3.14, 3.14)

with output which looks something like this:

[[File:quick_plot_labels.png]]

Much better, and much easier to interpret!

@@ Line 20: / Line 20: @@
    Quick_plot.func
-     ~labels:("Angle (radians)", "Amplitude", "A few functions")
+     ~labels:("Angle (radians)", "f(x)", "A few functions")
      ~names:["sin"; "cos"]
-     [sin; cos] (-3.14, 3.14)
+     [sin; cos] (-3.15, 3.15)
 with output which looks something like this:

OCaml tutorial - Revision history

Hcarty: /* Using the Quick_plot module */ Fix plot axis labeling

Hcarty: Created page with '== Intro == The [http://caml.inria.fr OCaml] bindings for PLplot provide three means of accessing PLplot's functionality through three modules, Plplot, Plplot.Plot and Plplot.Qu…'