Description
id: Model functions for identlty variance models.
Usage
id(obj)
idv(obj, init=NA)
idh(obj, init=NA)
Arguments
obj |
A factor in data. |
init |
Optional vector of initial values with an optional names attribute from the set {“P”, “U”, “F”} specifying the boundary constraint for each parameter as positive, unconstrained or fixed, respectively. |
Details
The class of identity models includes the null correlation model id, and its homogeneous and heterogeneous variance forms (idv and idh).
Functions
asr_idv: |
Identity variance model. |
asr_idh: |
Heterogeneous identity (diagonal) variance model. |