>Dear Stephane,
>
>thanks very much for your quick and helpful answer. Now it is clear that
>lw are the row weights and cw the column weights.
>
>Of course, I meant ca$lw instead of ca$li, that was my mistake, sorry.
>
>The manual I mentioned, is the complete ade4-package manual ("The ade-4
>package, version 1.2-2, 21 May 2004"), page 65 description of "dudi" (page
>52 in the older version1.1-2)
ok we will check it, Thanks !
>However, I still fail to do the randtest. The error message is:
>
>"Error in randtest.coinertia(coinert, nrepet = 9999) :
> Equal row weights expected"
This message signify that row weights for the two tables are not
identical. This is quite strange if you say that you have peform coinertia
analysis and you can plot the results.
Please can you send us exactly what are your commands (copy from R), and
check what are
the row weights (lw) of your two separate analyses ca$lw and fca$lw are
identical.
What I suppose is that you have perform:
- separate analyses
- coinertia analysis
- "something"
- montecarlo tests
And when you do "something", you change one of the two objects created by
separate analyses (fca or ca). The randtest procedure, recall your separate
analysis using the coinertia call. So it requires that all your objects
exist and have not been changed. If you have changed the ca or fca object
between the coinertia analysis and the montecarlo test, you will obtain an
error.
I do not know if my answer is clear ...
I hope
Stéphane DRAY
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Département des Sciences Biologiques
Université de Montréal, C.P. 6128, succursale centre-ville
Montréal, Québec H3C 3J7, Canada
Tel : (514) 343-6111 poste 1233 Fax : (514) 343-2293
E-mail : stephane.dray@umontreal.ca
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Web http://www.steph280.freesurf.fr/
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