On May 3, 2013, at 14:59 , Ozgul Inceoglu wrote:
> Dear All, I am trying to perform MANOVA. I have table with 504
columns(species) and 36 rows) with two grouping (season and location)
>
> Zx <- Z[c(4:504)]
> Zxm <- as.matrix(Z)
> m<- manova(Zxm~Season*location, data=Z)
>
> when I do summary.aov, I get respond for each species but summary.manova
> summary.manova(m) :" residuals have rank" 24<501.
>
> What can it be the reason for this error message?
Too many columns and too few rows. Multivariate tests require more degrees of
freedom than response variables.
>
> Thank you,
>
> Ozgul
>
> Below you can see part of the table.
> name Season location Acetobacter Aerococcus Alishewanella Amaricoccus
> xls-nord-01 J w 0 0,024078979 0 0
> bxls-sud-01 J w 0 0 0 0
> brux-nord-04 A w 0 0 0 0
> brux-sud-04 A w 0 0 0 0
> br-nord-07 Ju w 0 0 0 0
> br-sud-07 Ju w 0 0 0 0
> b-nord-10 O w 0 0 0 0
> bsud-10 O w 0,107836089 0 0,107836089 0,035945363
> Z1-01 J u 0 0 0 0,040567951
> Z3-01 J u 0 0 0 0
> Z5-01 J d 0,023116043 0 0 0
> Z7-01 J d 0,014130281 0 0 0
> Z9-01 J d 0 0 0 0
> Z10-01 J d 0 0 0 0
> Z12-01 J d 0 0 0 0
> Z1-04 A u 0 0 0 0
> Z3-04 A u 0 0 0 0
> Z5-04 A d 0 0 0 0
> Z7-04 A d 0 0 0 0
> Z9-04 A d 0 0,013839873 0 0
> Z10-04 A d 0 0 0 0
> Z12-04 A d 0 0 0 0
> Z1-07 Ju u 0 0 0 0
> Z3-07 Ju u 0 0 0 0
> Z5-07 Ju d 0 0 0 0
> Z7-07 Ju d 0 0 0 0
> Z9-07 Ju d 0 0 0 0
> Z10-07 Ju d 0 0 0 0
> Z12-07 Ju d 0 0,022301517 0 0
> Z1-10 O u 0 0 0 0
> Z3-10 O u 0 0 0 0
> Z5-10 O d 0 0 0 0
> Z7-10 O d 0 0 0,052924054 0
> Z9-10 O d 0 0 0,035050824 0
> Z10-10 O d 0 0 0 0,040783034
> Z12-10 O d 0 0 0 0
>
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--
Peter Dalgaard, Professor,
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