simuDatRate: simuDatRate
In hferg/hfgr:

Description Usage Arguments

Simulate data over a phylogeny, or sub section of a phylogeny, in order to reflect variable rates. Based on adding a constant to the tip data branch by branch and weighting by branch length and does not need to stretch the phylogeny.

1 2	simuDatRate(tree, transtree = NULL, node, a, sig, dat = NULL, method = "recursive", standardise = FALSE)

`tree`	The tree that data is simulated on.
`transtree`	If you want to simulate data using a transformed tree to derive branch lengths, then this is where that tree goes. Defaults to NULL.
`node`	The node at which to make the changes.
`a`	The constant that is weighted by branch length and added to the data at the tips. Once the relationship between scalar and this is known, this can be scalar
`sig`	The standard deviation of the random component of the BM simulation. NOT sigma squared.
`dat`	If you want to use some data you already have and change it this way, put it here.
`method`	Either add values recursively by tail branch length (default), or alternative "path" - which adds values proportional to total path length.
`standardise`	Logical, whether or not to z-standardise the data. Defaults to FALSE.