# buildV

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##### Forms expected (co)variances for GLMMs fitted with MCMCglmm

Forms the expected covariance structure of link-scale observations for GLMMs fitted with MCMCglmm

Keywords
models
##### Usage
buildV(object, marginal=object$Random$formula, diag=TRUE, it=NULL, posterior="mean", …)
##### Arguments
object

an object of class "MCMCglmm"

marginal

formula defining random effects to be maginalised

diag

logical; if TRUE the covariances betwween observations are not calculated

it

integer; optional, MCMC iteration on which covariance structure should be based

posterior

character; if it is NULL should the covariance structure be based on the marginal posterior means ('mean') of the VCV parameters, or the posterior modes ('mode'), or a random draw from the posterior with replacement ('distribution'). If posterior=="all" the posterior distribution of observation variances is returned

Further arguments to be passed

##### Value

If diag=TRUE an n by n covariance matrix. If diag=FALSE and posterior!="all" an 1 by n matrix of variances. If posterior=="all" an nit by n matrix of variances (where nit is the number of saved MCMC iterations).

##### See Also

MCMCglmm

##### Aliases
• buildV
Documentation reproduced from package MCMCglmm, version 2.29, License: GPL (>= 2)

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