[R] Balanced Inc. Block Design

[Peter Baker (CMIS, Indooroopilly)]

On Wed, 31 Jul 2002, Winfried Theis wrote:

>On 30-Jul-02 Erin Hodgess wrote:
>> How can we do Balanced Incomplete Block Design from R, please?
>As far as I know there is no algorithm to construct BIB designs for arbitrary
>numbers of blocks, experimental units and replicates -- actually for some
>combinations no BIBD exist. For a list of different combinations and generating
>procedures see K. Hinkelmann and O. Kempthorne: Design and analysis of
>experiments, Wiley, New York
>Winfried

For something a little more modern, perhaps CycDesign may prove
useful, see http://www.ffp.csiro.au/tigr/software/cycdesign/cycdes.htm

I don't have a copy yet so I can't really say how useful it may
prove. And of course, as is correctly pointed out, I presume you can't
necessarily find a design for all possible combinations of constraints

Cheers
Peter

-- 
Dr Peter Baker, Statistician (Bioinformatics/Genetics),
CSIRO Mathematical & Information Sciences,
120 Meiers Rd, INDOOROOPILLY, QLD 4068.  Australia. 
Email: <Peter.Baker at csiro.au>
WWW: http://www.cmis.csiro.au/Peter.Baker/
Phone:+61 7 3214 2210   Fax:+61 7 3214 2881



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