summary.glmulti: Handling glmulti objects

Description

These standard S3 functions can be applied on glmulti to print a short report, obtain a more detailed summary, or produce different types of graphics.

Usage

# S3 summary method for class 'glmulti'
## S3 method for class 'glmulti':
summary(object, ...)

# S3 print method for class 'glmulti'
## S3 method for class 'glmulti':
print(x, ...)


# S3 plot method for class 'glmulti'
## S3 method for class 'glmulti':
plot(x, type="p", ...)

Arguments

object

A glmulti object

An object of class glmulti

type

The type of graph to be produced. One of "p", "r", "s" or "w" (see below).

...

Further arguments.

Value

plot can be used to have a graphical representation of the results. Two types are proposed: type="p" plots the IC profile (the IC values form the best to the worst model). A horizontal line delineates models that are less than 2 IC units away from the best model. type="r" shows diagnostics of the fit (residuals versus predicted values, and QQ plot of residuals) for the five best models. It calls the plot functions on the fitted model objects, which should be defined (e.g. plot.lm, plot.glm). This type of plot can only be used if model objects are included in the glmulti object (i.e. if includeobjects was set to true). type="s" plots the relative importance of model terms, i.e. the overall support for each variable across all models. A vertical line is drawn at 80 type="w" plots the normalized evidence weights of the models. A vertical line delineates models that sum um to 95 print prints a brief synthesis of the analysis (e.g. the best model found, its IC value and evidence weight...) summary returns a list with more detailed elements:
namethe name of the analysis
methodThe method used
fittingThe fitting function used
critThe IC used
levelWhether interactions between predictors were considered or not
marginalityWhether the marginality rule was applied
confsetsizeThe requested size of the confidence set
besticThe lowest IC found
icvaluesThe IC values of the models in the confidence set, from lower to greater
bestmodelA list containing the formula of the best model found, or of the best models found if several had the same IC value
generationsThe number of generations it took to converge. For genetic algorithm only.
elapsedThe actual (system) time it took. For genetic algorithm only.
includeobjectsA boolean indicating whether fitted model objects are contained in the object.

Details

The name of the returned object is the name of the first object passed, with "consensus-" prepended. The params slot of the returned object is taken from the first object too.

References