get.rate.matrix.params.tm: Get the parameters describing a rate matrix
Description
Get the parameters describing a rate matrix
Usage
get.rate.matrix.params.tm(x)
Value
A numeric vector of parameters which can be used to describe
the transition matrix under the substitution model indicated in x.
May be NULL for certain models which have no parameters (JC69, F81).
The meaning of the parameters is described in
set.rate.matrix.tm
.