x2_sym — Exchangability matrix on doublets constructed from nucleotide exchange rates

Usage

x2_sym(submodel: ExchangeModel<b>, a: a) → ExchangeModel<a>

Type constraints: Doublets<a,b>

Arguments

submodel:

The singlet exchange model

a:

The Doublets alphabet

Default: The alphabet in the current context

Original default expressions
a 
get_state(alphabet)

Description

Exchangability matrix on doublets constructed from an exchangability matrix on nucleotides.

Thus function can be used to build up doublet models incrementally.

Examples

HKY85_sym +> x2_sym +> F
GTR_sym +> x2_sym +> F
x2_sym(HKY85_sym)

See also

x2