asrtests.object {asremlPlus} | R Documentation |
An object of S3-class asrtests
that contains information derived from the fits of
a mixed model using asreml
.
as.asrtests
is function that makes an object of this class.
is.list
is the membership function for this class; it tests
that an object is of class list
.
validAsrtests
can be used to test the validity of an
asrtests.object
.
A list
that contains three components:
asreml.obj
: an object of class asreml
that contains
the fit of a model;
wald.tab
: A data.frame
containing a pseudo-anova
table for the fixed terms produced by wald.asreml
. It has
rownames
that corresond to the fixed terms that were
fitted and four columns. If denominator degrees of freedom were
calculated then the columns are Df
, denDF
,
F.inc
, Pr
; otherwise the columns are Df
,
Sum of Sq
, Wald statistic
, and Pr(Chisq)
.
test.summary
: A data.frame
with columns term
,
DF
, denDF
, p
, AIC
, BIC
and
action
. Possible codes for action
are:
Dropped
, Retained
, Swapped
, Unswapped
,
Unchanged
, Significant
, Nonsignificant
,
Absent
, Added
, Removed
and Boundary
.
If the either of the models did not converge, unconverged
will be added to the code. Unchanged
is used when
allow.unconverged
is FALSE
.
Note that the logical asreml.obj$converge
also
reflects whether there is convergence.
A row is added to the test.summary
for each term that is
dropped, added or tested or a note that several terms have been
added or removed. When values for the AIC and BIC are included
in the row, then the DF are the number of fixed parameters in the
model and denDF are the numbers of variance parameters.
When changeModelOnIC
adds a row then the values of the
degrees of freedom and information criteria are differences
between those for the model that is supplied and the model
changed by changeModelOnIC
.
Chris Brien
as.asrtests
, as.asrtests
, validAsrtests