[R] transition matrices

[hadley wickham]

Hi Richard,

You might want to have a look at Bertin's reorderable matrices, which
seem to be solving a similar problem.  Googling for bertin reorderable
matrix gives a few automatic implementations.

Hadley

On 4/4/07, Richard Rowe <richard.rowe at jcu.edu.au> wrote:
> I am working with transition matrices of sequences of animal
> behaviours.  What I would like to do is parse the original matrices,
> adjusting row/column order so that the matrix has its main values in blocks
> surrounding the diagonal.  This would cause behaviours involved in
> functional groupings (e.g. grooming, resting, foraging etc) to appear as
> blocks.
> This can be done manually by applying subjective 'prior knowledge' of
> sequences, however I would like to have an algorithmic/objective method to
> generate at least a first cut ...
> Any suggestions or hints (even just thoughts) would be much appreciated,
>
> Richard Rowe
>
> Dr Richard Rowe
> Zoology & Tropical Ecology
> School of Tropical Biology
> James Cook University
> Townsville 4811
> AUSTRALIA
>
> ph +61 7 47 81 4851
> fax +61 7 47 25 1570
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