Hi,

I am trying to fit a phylogenetic regression using brms but it seems that the model can’t find the tree even though everything else works file.

I get the error “Error: The following variables can neither be found in ‘data’ nor in ‘data2’:

‘phylo’”

Any help is greatly appreciated

```
#import Data
root.high<-read.csv(file="Data/roothigh.data.csv")
phylo <- ape::read.tree(file = "Data/Phylogeny/Tree2.txt")
[Tree2.txt|attachment](upload://xFYGBeg4tOebVn9pEA0ZLlupumG.txt) (924 Bytes)
A <- ape::vcv.phylo(phylo,corr = FALSE)
library(brms)
model_simple <- brm(
Number.of.Root.Tips ~ Treatment + (1|gr(phylo, cov = A)),
data = root.high,
family = gaussian(),
data2 = list(A = A))
```

roothigh.data.csv (3.5 KB)

Tree2.txt (924 Bytes)