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R can't compute a random slope growth model with nlme
I am using the nlme package in R (4.1.1) to fit a hierarchical growth model.
The data are longitudinal (therapy sessions on level 1) nested within patients (level 2).
The data are called as follows:
v...
Ben Heuser
Votes: 0
Answers: 0
Issues predicting with `nlme::gls`quadratic model fitted with `poly(..., 2)`
I have fitted a quadratic model with a variance structure that allows different variance levels per level of a factor, and I’m having trouble predicting on a new data set with 2 entries only. Here’s a...
Ceres
Votes: 0
Answers: 1
How to resolve GLMM residuals pattern , spatial correlation and zero distance error?
When I conducted data analysis, I encountered an serious problem.
I want to research how a Treatment intensity would influence response variable y. The field investigation was conduced at different S...
PeterPanPan
Votes: 0
Answers: 1
Linear mixed model and factorial design with 3 levels
Four common bean trials were established in fields, one trial per year. We combined density, bean genotype, and fungicide to manage white mold with a factorial scheme. The experimental design was a ra...
Heder Braun
Votes: 0
Answers: 1