| fa.init {asreml} | R Documentation |
Factor analytic initial values
Description
Obtains initial parameter values for factor analytic models from the observed variance-covariance matrix.
Usage
fa.init(data, model, scale = 1, core_version = NULL)
Arguments
data |
A data frame containing the response and the base factors in the factor analytic (compound) model term. |
model |
A two-sided formula with the response on the left and a first order
interaction with a factor analytic model term on the right. Valid
factor analytic model functions are |
scale |
Scales the variance-covariance matrix prior to calculating the
parameter estimates (default = |
core_version |
The version of the algorithmic core to use, not usually required. |
Value
A numeric vector of specific variances followed by the loadings if
the factor analytic function is "fa" or "rr", otherwise
a numeric vector of loadings followed by the specific variances.
Examples
## Not run:
init <- fa.init(data, fa(site,2):variety)
## End(Not run)