plots.thpr

0th

Percentile

Mixed-Effects Profile Plots (Regular / Density / Pairs)

Xyplot, Densityplot, and Pairs plot methods for a mixed-effects model profile. xyplot() draws “zeta diagrams”, also visualizing confidence intervals and their asymmetry. densityplot() draws the profile densities. splom() draws profile pairs plots. Contours are for the marginal two-dimensional regions (i.e. using df = 2).

Usage
# S3 method for thpr
xyplot(x, data = NULL,
       levels = sqrt(qchisq(pmax.int(0, pmin.int(1, conf)), df = 1)),
       conf = c(50, 80, 90, 95, 99)/100,
       absVal = FALSE, scales=NULL,
       which = 1:nptot, …)

# S3 method for thpr densityplot(x, data, …)

# S3 method for thpr splom(x, data, levels = sqrt(qchisq(pmax.int(0, pmin.int(1, conf)), 2)), conf = c(50, 80, 90, 95, 99)/100, which = 1:nptot, draw.lower = TRUE, draw.upper = TRUE, …)

Arguments
x
a mixed-effects profile, i.e., of class "thpr", typically resulting from profile(fm) where fm is a fitted model from lmer (or its generalizations).
data
unused - only for compatibility with generic.
levels
the contour levels to be shown; usually derived from conf.
conf
numeric vector of confidence levels to be shown as contours.
absVal
logical indicating if abs(.)olute values should be plotted, often preferred for confidence interval visualization.
scales
plotting options to be passed to xyplot
which
integer or character vector indicating which parameters to profile: default is all parameters (see profile-methods for details).
draw.lower
(logical) draw lower-triangle (zeta scale) panels?
draw.upper
(logical) draw upper-triangle (standard dev/cor scale) panels?
further arguments passed to xyplot, densityplot, or splom from package lattice, respectively.
Value

xyplot:
a density plot, a "trellis" object (lattice package) which when print()ed produces plots on the current graphic device.
densityplot:
a density plot, a "trellis" object, see above.
splom:
a pairs plot, aka scatterplot matrix, a "trellis" object, see above.

See Also

profile, notably for an example.

Aliases
  • xyplot.thpr
  • densityplot.thpr
  • splom.thpr
Examples
## see   example("profile.merMod")
Documentation reproduced from package lme4, version 1.1-13, License: GPL (>= 2)

Community examples

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