dnPhyloBrownian
| tree : | TimeTree (pass by const reference) |
| The tree along which the continuous character evolves. | |
| sigma : | RealPos (pass by const reference) |
| The branch-length multiplier to scale the variance of the Brownian motion. | |
| drift : | Real (pass by const reference) |
| The drift parameter of the Brownian motion. | |
| Default : 0 |