Displaying 1 result from an estimated 1 matches for "distpcoa".
2004 Dec 10
1
How to circumvent negative eigenvalues in the capscale function
...pscale I understand uses
Vegedist anyway to calculate its distance matrix), R uses up all available
memory on the computer, stops and then comes back with errors regarding
negative eigenvalues.
I must admit to being a very very basic R user so this is starting to go
over my head. I tried using the distpcoa program of Legendre and Anderson
that can supposedly output a Bray-Curtis distance matrix corrected for the
problem of negative eigenvalues (i.e., trying to circumvent the first steps
in Capscale) but have had no success as my datamatrix is larger than what
their program can handle.
Just wondering...