Running MANCOVA in R
Hi Laura, It would be helpful if you provided a reproducible example with a small data set and copy and paste the error message you are getting. Advice on making a reproducible example in R is here: http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example Adam On Mon, Feb 6, 2017 at 10:31 PM, Livingston, Laura <laura.livingston at wsu.edu
wrote:
Hello everyone, I am a new user on the r-sig-ecology group. I have been working a community dataset that contains 257 invertebrate genera sampled across 3 categories of streams and a variety of stream temperatures. My committee member recommended that I run a MANCOVA on the dataset to see whether there was a difference among the 3 categories of streams using stream temperature as a co-variate. However, I have been searching on how to run a MANCOVA in R without much luck. Has anyone come across this problem before? The closest example that I have been able to find is at this link: https://stat.ethz.ch/pipermail/r-sig-ecology/2011-November/002553.html. Using my test data and following that example I wrote: library(vegan) library(car) library(dplyr) Data <- read.csv("MANCOVA_testData.csv") Community <- Data %>% dplyr::select(-VisitID:StreamTemp) Community_dissimilarity <- vegan::vegdist(Community,method="bray") MANCOVA <- car::ANOVA(lm(as.matrix(Community_dissimilarity) ~ Data$Category + Data$StreamTemp)) summary(MANCOVA) When I run this code, I get an error. Thoughts? [R-sig-eco] MANCOVA in R - SfS ? Seminar for Statistics<https://stat.ethz. ch/pipermail/r-sig-ecology/2011-November/002553.html> stat.ethz.ch On Fri, 2011-11-25 at 10:47 +0100, marcelino.delacruz at upm.es wrote: > Hi, > > maybe adonis? e.g., > > library(vegan) > adonis(Y~Lat+Lat2+Year+Lat:Year+Lat2:Year ... Sincerely, Laura M.S. student, Environmental Science
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Adam Zeilinger Postdoctoral Scholar Department of Environmental Science, Policy, and Management University of California Berkeley arz at berkeley.edu [[alternative HTML version deleted]]