Matrix operations in OCaml?

Matrix operations in OCaml?

[Oliver Bandel]

Hello,

on OCaml linkdb and on the Hump I didn't found
libraries to work on matrices/matrix's, so
to have a library to do linear algebra
calcualtions.

Is there something like that or do I have to
implement it by my own?


TIA,
  Oliver

Re: [Caml-list] Matrix operations in OCaml?

[Martin Jambon]

On Tue, 25 Oct 2005, Oliver Bandel wrote:

> Hello,
>
> on OCaml linkdb and on the Hump I didn't found
> libraries to work on matrices/matrix's, so
> to have a library to do linear algebra
> calcualtions.
>
> Is there something like that or do I have to
> implement it by my own?

Markus Mottl wrote an interface to BLAS and LAPACK called Lacaml.

You'll find it but it doesn't appear in the hump(s) under 
topics/science/maths and logic.


Martin

--
Martin Jambon, PhD         http://martin.jambon.free.fr
Freedom for the regexps!   http://martin.jambon.free.fr/micmatch-howto.html

Re: [Caml-list] Matrix operations in OCaml?

[E Stabler]

Another interface to LAPACK that I have been using
for floating point matrix ops is here:

    http://math.ucsb.edu/~lyons/camlFloat/

- Ed

Martin Jambon writes:
 > On Tue, 25 Oct 2005, Oliver Bandel wrote:
 > 
 > > Hello,
 > >
 > > on OCaml linkdb and on the Hump I didn't found
 > > libraries to work on matrices/matrix's, so
 > > to have a library to do linear algebra
 > > calcualtions.
 > >
 > > Is there something like that or do I have to
 > > implement it by my own?
 > 
 > Markus Mottl wrote an interface to BLAS and LAPACK called Lacaml.
 > 
 > You'll find it but it doesn't appear in the hump(s) under 
 > topics/science/maths and logic.
 > 
 > 
 > Martin

Re: [Caml-list] Matrix operations in OCaml?

[Thomas Fischbacher]

On Tue, 25 Oct 2005, Oliver Bandel wrote:

> Hello,
> 
> on OCaml linkdb and on the Hump I didn't found
> libraries to work on matrices/matrix's, so
> to have a library to do linear algebra
> calcualtions.
> 
> Is there something like that or do I have to
> implement it by my own?

Depends on what you want to do:

* Large, parallel sparse matrix calculations (MPI and such)

* Efficient single-machine large linear algebra (lapack/blas)

* "Just Inverting 4x4 matrices" and such

There are solutions for all those situations.

-- 
regards,               tf@cip.physik.uni-muenchen.de              (o_
 Thomas Fischbacher -  http://www.cip.physik.uni-muenchen.de/~tf  //\
(lambda (n) ((lambda (p q r) (p p q r)) (lambda (g x y)           V_/_
(if (= x 0) y (g g (- x 1) (* x y)))) n 1))                  (Debian GNU)

Re: Matrix operations in OCaml?

[Vincenzo Ciancia]

Oliver Bandel wrote:

> Hello,
> 
> on OCaml linkdb and on the Hump I didn't found
> libraries to work on matrices/matrix's, so
> to have a library to do linear algebra
> calcualtions.
> 
> Is there something like that or do I have to
> implement it by my own?
> 

Thanks to Markus Mottl for all the ocaml software packages he mantains :) 

http://ocaml.info/home/home004.html

I think that "lacaml" is what you're looking for. I didn't find it on the
hump but maybe it's well hidden.

Bye

Vincenzo

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I read vincenzo_ml at yahoo dot it
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vincenzo_ml at yahoo dot it

Re: [Caml-list] Matrix operations in OCaml?

[Jon Harrop]

On Tuesday 25 October 2005 19:37, Oliver Bandel wrote:
> on OCaml linkdb and on the Hump I didn't found
> libraries to work on matrices/matrix's, so
> to have a library to do linear algebra
> calcualtions.
>
> Is there something like that or do I have to
> implement it by my own?

Mottl et al. kindly wrote lacaml to interface to LAPACK. The lacaml page is 
linked to from the bottom of the page of my OCaml book:

  http://www.ffconsultancy.com/products/ocaml_for_scientists

Basic use (including compilation) is described on p173 and the "Eigen 
problems" example on p236-239 demonstrates the use of lacaml. The 33-line 
OCaml program is freely available on-line:

  http://www.ffconsultancy.com/products/ocaml_for_scientists/complete/

-- 
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
Objective CAML for Scientists
http://www.ffconsultancy.com/products/ocaml_for_scientists