# plots.thpr

From lme4 v1.1-13
by Ben Bolker

##### 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
**s**catter**plo**t**m**atrix, a`"trellis"`

object, see above.

##### See Also

`profile`

, notably for an
example.

##### Examples

```
## see example("profile.merMod")
```

*Documentation reproduced from package lme4, version 1.1-13, License: GPL (>= 2)*

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