form
argument
gives considerable flexibility in the type of plot specification. A
conditioning expression (on the right side of a |
operator)
always implies that different panels are used for each level of the
conditioning factor, according to a Trellis display.# S3 method for gls
qqnorm(y, form, abline, id, idLabels, grid, …)
"gls"
, representing
a generalized least squares fitted model.y
can be referenced. In addition, y
itself
can be referenced in the formula using the symbol
"."
. Conditional expressions on the right of a |
operator can be used to define separate panels in a Trellis
display. The expression on the right hand side of form
and to
the left of a |
operator must evaluate to a residuals
vector. Default is ~ resid(., type = "p")
,
corresponding to a normal plot of the standardized residuals.idLabels
. If given as a one-sided
formula, its right hand side must evaluate to a logical, integer, or
character vector which is used to identify observations in the
plot. If missing, no observations are identified.id
. If given as a
one-sided formula, its right hand side must evaluate to a vector
which is converted to character and used to label the identified
observations. Default is the innermost grouping factor.xyplot
defaults to TRUE
, else defaults to
FALSE
.gls
, plot.gls
fm1 <- gls(follicles ~ sin(2*pi*Time) + cos(2*pi*Time), Ovary,
correlation = corAR1(form = ~ 1 | Mare))
qqnorm(fm1, abline = c(0,1))
Run the code above in your browser using DataLab