Re: [R-sig-phylo] standard error (NaN) in model ARD

2016-03-04 Thread Emmanuel Paradis
Hi Felipe, You didn't tell us what function you used: I assumed it was ace() in ape. Often, the fact that SEs cannot be computed by ace() means that the model is a poor fit and that a simpler model is better. You said that the LRT is significant (did you use anova() on the outputs of ace?), so

[R-sig-phylo] standard error (NaN) in model ARD

2016-02-29 Thread Felipe Rossetto
Hello everyone, I am estimating the ancestral state for a 3-state discrete character. The log-likelihood test indicated the all rates different model (ARD) fits well for this character, however, thre was message warning NANs were produced. So, I looked for standard error typing the command: > ARDre