Hi Ting-Wen.
If you could (off-list) send me the simplest possible reproducible
example of the error (with your input data files or a saved R workspace)
I would be more than happy to look into it.
All the best, Liam
Liam J. Revell, Associate Professor of Biology
University of Massachusetts
Dear all,
I’m measuring phylogenetic signal for a set of continuous traits using the
function “phylosig”. I try to apply standard error of measurements in Pagel’s
lambda, but the R gives this error message:
'Error in solve.default(V) :
Lapack routine dgesv: system is exactly singular: U[1,1]
