[R] MANOVA summary.manova(m) :" residuals have rank"

[peter dalgaard]

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
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com