CL-OCTAVE

Introduction

The goal of this project is to provide a link between the Octave programming language and Common-Lisp.

In signal and image processing tasks, octave/matlab is often use due to the presence of the toolboxes. Lots of users have developped their own codes. The goal of this project is to allow octave/matlab users to gently migrate to common-lisp without a complete rewritting of their code. With this package, you can :

• send and receive data to/from octave. Supported data types are numbers (scalar and complex), strings, vectors and matrices. Vector and matrices must be composed of numbers : scalar or complex. By default the floats are passed as single-floats (float32 in octave) but can be updated to double-floats using the :element-type keyword.
• funcall any octave function with arguments. The input and output arguments are lisp ones. The default number of output arguments is 1 but this can be modified using the :nargout keyword. If more than one output argument are wanted, they are returned as multiple values.

The proposed package is running under cmucl. I need some little work to get a portable version.

Some exemple codes:

;; send a scalar
(set/octave "a" 1)              

;; receive the contents of any variable
(get/octave "a")                

;; arrays (of single-floats or double-floats)
(set/octave "b" #(1.0 2.0 3.0)) 

;; receive an array with double-float elements
(get/octave "b" :element-type 'double-float)

;; send a complex number
(set/octave "c" #c(1 2))

;; funcall an octave function
(funcall/octave "conv" #(1.0 2.0 3.0 2.0 1.0) #(-1.0 1.0))

;; execute an octave function. (equivalent of a funcall with :nargout 0)
(exec/octave "plot" #(1.0 2.0 3.0 2.0 -10.0))

;; funcall an octave with multiple output arguments
(multiple-value-list (funcall/octave "cart2pol" 1 1 :nargout 2))

Mailing Lists

• CL-OCTAVE-devel
  for developers
• CL-OCTAVE-cvs
  CVS log feed.
• CL-OCTAVE-announce
  for announcements.

Download

This project can be downloaded here :

• version 0.1

CVS

You can browse our CVS repository or download the current development tree via anonymous cvs, as described here