Bonjour,
we wanted to fit a manova as descripted in Marieta /et al./ 2003,
"convergent habitat segregation of /Aedes aegyptii/ and /Aedes
albopictus/ (Diptera: /Culicidae/) in Southern Brazil and Florida", /J.
Med. Entomol./, *40* (6), 785-794. They did their analysis with SAS
software.
We have the same kind of data with two insect species and city, habitat
and season factors. We used the function manova() and it was OK for
multivariate analysis. We have two questions (we have searched, with the
help tools we know, on the site and on many packages without success ) :
1/ The next step of our analysis was to calculate the Standardized
Canonical Coefficients (SCC); we have no idea of how to do. Is there
some link with a PCA on Instrumental Variables ? The explaination in the
article was not clear for us.
2/ As in a ANOVA, we wanted to realize mean comparisons. Marieta et al.
used bivariate pairwise contrasts of a factor within each level of the
other factor (for significant interactions) using Dunn-Sidak method and
univariate contrasts of pairs of main effects (for significant main
effects) using Dunn-Sidak method. We tried to use the glht() function
(from multcomp package) without success because of the nature of
manova() object. Has someone an helpful advice to give ?
Merci beaucoup, (Thanks a lot)
Bien cordialement, (Sincerely yours)
Fr?d?ric.
--
Dr. Fr?d?ric Chiroleu
Biom?tricien
CIRAD-Syst?mes Biologiques (Cirad-Bios)
UMR 53 PVBMT (Peuplements V?g?taux et Bio-agresseurs en Milieu Tropical)
Laboratoire d'Ecologie Terrestre et de Lutte Int?gr?e (LETLI)
P?le de Protection des Plantes (3P)
7, chemin de l'IRAT - Ligne Paradis
97410 Saint-Pierre
?le de la R?union - France
T?l. : +262 (0)262 499 230
Standard : +262 (0)262 499 200
Fax : +262 (0)262 499 293
Courriel : frederic.chiroleu at cirad.fr
