scope <- list(lower = ~1, upper = ~Si+Al+ K+Ti+Mg+ED+Mn+Sr+Zr+C.N+C.P+S+pH)
ordiR2step(my_RDA,
-
scope = scope, -
Pin = 0.05, -
permutations = how(nperm = 499), -
trace = TRUE, -
R2permutations = 1000)
Error in reformulate(scope) :
'termlabels' must be a character vector of length at least one
Can someone help me?