bm_loglik_duo:
Likelihood of a 2-dimensional point with one daughter and one ancestor nodes
Description
For internal use only.
Usage
bm_loglik_duo(a, v, d, u, t, sx, sy, nGQ)
Arguments
a
vector with ancestor value (x & y).
v
vector with current point being evaluated (x & y).
d
vector with daughter value (x & y).
u
time slice (time from v to t).
t
time separating ancestor from daughter.
sx
current value for sigma2x.
sy
current value for sigma2y.
nGQ
degree of the one-dimensional Gauss-Legendre quadrature rule (default = 20) as given by polyCub.SV in package polyCub.
Value
loglikelihood of v according to Brownian motion.
References
Quintero, I., Keil, P., Jetz, W., Crawford, F. W. 2015 Historical Biogeography Using Species Geographical Ranges. Systematic Biology. doi: 10.1093/sysbio/syv057