nlme (version 3.1-1)

summary.gls: Summarize a gls Object

Description

Additional information about the linear model fit represented by object is extracted and included as components of object. The returned object is suitable for printing with the print.summary.gls method.

Usage

summary(object, verbose)

Arguments

object

an object inheriting from class gls, representing a generalized least squares fitted linear model.

verbose

an optional logical value used to control the amount of output in the print.summary.gls method. Defaults to FALSE.

Value

• an object inheriting from class summary.gls with all components included in object (see glsObject for a full description of the components) plus the following components:
• corBeta
  approximate correlation matrix for the coefficients estimates
• tTable
  a data frame with columns Value, Std. Error, t-value, and p-value representing respectively the coefficients estimates, their approximate standard errors, the ratios between the estimates and their standard errors, and the associated p-value under a $t$ approximation. Rows correspond to the different coefficients.
• residuals
  if more than five observations are used in the gls fit, a vector with the minimum, first quartile, median, third quartile, and maximum of the residuals distribution; else the residuals.
• AIC
  the Akaike Information Criterion corresponding to object.
• BIC
  the Bayesian Information Criterion corresponding to object.

See Also

gls, AIC, BIC, print.summary.gls

Examples

data(Ovary)
fm1 <- gls(follicles ~ sin(2*pi*Time) + cos(2*pi*Time), Ovary,
           correlation = corAR1(form = ~ 1 | Mare))
summary(fm1)