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? 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
MANOVA summary.manova(m) :" residuals have rank"
2 messages · Ozgul Inceoglu, 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
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