Mixed Models
Hi Jessica, It's likely that you don't have enough data to fit the model you described. These are more like stats questions (i.e. what factors to include), but I think if you provide more information about your problem (A reproducible example) then you might get more help. See here for how to do this: http://adv-r.had.co.nz/Reproducibility.html. Cheers, Neil
On Tue, Feb 16, 2016 at 4:45 PM, Jessica Witt <jes-w at hotmail.com> wrote:
Hi, I?m very new to mixed modelling so please forgive me for this! I am trying to see the repeatability of a behaviour for individuals e.g. the area travelled, but I?ve also got a number of variables that could confound this so am I right in including these as fixed factors? Furthermore I?ve written the code but it?s not giving me anything and I?m pretty unsure what the error message means, if someone could explain to me any modifications I need in my R code to get the repeatability of area travelled that would be amazing! areamod<-lmer(Area~1+Sex+Temp+Mass+Length+Dodgy+Tank+Order+(1|ID), data=platy, na.action=na.exclude, REML=TRUE) fixed-effect model matrix is rank deficient so dropping 1 column / coefficient
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Cheers, Neil Neil French Collier, PhD Faculty of Sustainability Leuphana University L?neburg Rotenbleicher Weg 67 21335 Lueneburg Germany Twitter: @foodsecbio email: collier at leuphana.de Google Scholar <https://scholar.google.com.au/citations?hl=en&user=xVdc-dsAAAAJ&view_op=list_works&sortby=pubdate> Ideas for Sustainability <https://ideas4sustainability.wordpress.com> [[alternative HTML version deleted]]