This is an internal (non-exported) function. This help page provides additional documentation mainly intended for developers and expert users.
expand_cov(Ulist, grid, usepointmass = TRUE)
a list of covarance matrices
a grid of scalar values by which the covariance matrices are to be sc
if TRUE adds a point mass at 0 (null component) to the list
This takes the covariance matrices in Ulist and multiplies them by the grid values If usepointmass is TRUE then it adds a null component.
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