View source: R/PLNfitS3methods.R
vcov.PLNfit  R Documentation 
PLN()
model objectReturns the variancecovariance matrix of the main parameters of a fitted PLN()
model object. The main parameters of the model correspond to
B
, as returned by coef.PLNfit()
. The function can also be used to return the variancecovariance matrix of the residuals. The latter matrix can also be accessed via sigma.PLNfit()
## S3 method for class 'PLNfit'
vcov(object, type = c("main", "covariance"), ...)
object 
an R6 object with class 
type 
type of parameter that should be extracted. Either "main" (default) for
or "covariance" for

... 
additional parameters for S3 compatibility. Not used 
A matrix of variance/covariance extracted from the PLNfit model. If type="main" and B
is a matrix of size d * p, the result is a blockdiagonal matrix with p (number of species) blocks of size d (number of covariates). if type="main", it is a symmetric matrix of size p.
.
sigma.PLNfit()
, coef.PLNfit()
, standard_error.PLNfit()
data(trichoptera)
trichoptera < prepare_data(trichoptera$Abundance, trichoptera$Covariate)
myPLN < PLN(Abundance ~ 1 + offset(log(Offset)), data = trichoptera)
vcov(myPLN, type = "covariance") ## Sigma
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