bm_propose_duo:
MCMC proposal for a 2-dimensional point with one daughter and one ancestor nodes
Description
For internal use only.
Usage
bm_propose_duo(a, d, u, t, sx, sy)
Arguments
a
vector with current ancestor value (x & y).
d
vector with current daughter value (x & y).
u
time slice (time from node being proposed to t).
t
time separating ancestor from daughter.
sx
current value for sigma2x.
sy
current value for sigma2y.
Value
a list with 3 objects. The vector proposal ($value), the logforward probability ($logfwdprob), and the logbackward probability ($logbwdprob).
References
Quintero, I., Keil, P., Jetz, W., Crawford, F. W. 2015 Historical Biogeography Using Species Geographical Ranges. Systematic Biology. doi: 10.1093/sysbio/syv057