plot.ranef.lmList
Plot a ranef.lmList Object
Description
If form
is missing, or is given as a one-sided formula, a Trellis dot-plot of the random effects is generated, with a different panel for each random effect (coefficient). Rows in the dot-plot are determined by the form
argument (if not missing) or by the row names of the random effects (coefficients). If a single factor is specified in form
, its levels determine the dot-plot rows (with possibly multiple dots per row); otherwise, if form
specifies a crossing of factors, the dot-plot rows are determined by all combinations of the levels of the individual factors in the formula. The Trellis function dotplot
is used in this method function.
If form
is a two-sided formula, a Trellis display is generated, with a different panel for each variable listed in the right hand side of form
. Scatter plots are generated for numeric variables and boxplots are generated for categorical (factor
or ordered
) variables.
Usage
## S3 method for class 'ranef.lmList' plot(x, form, grid, control, ...)
Arguments
x | an object inheriting from class |
form | an optional formula specifying the desired type of plot. If given as a one-sided formula, a |
grid | an optional logical value indicating whether a grid should be added to plot. Only applies to plots associated with two-sided formulas in |
control | an optional list with control values for the plot, when |
... | optional arguments passed to the Trellis |
Value
a Trellis plot of the estimated random-effects (coefficients) versus covariates, or groups.
Author(s)
José Pinheiro and Douglas Bates [email protected]
See Also
Examples
fm1 <- lmList(distance ~ age | Subject, Orthodont) plot(ranef(fm1)) fm1RE <- ranef(fm1, aug = TRUE) plot(fm1RE, form = ~ Sex) plot(fm1RE, form = age ~ Sex)
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Licensed under the GNU General Public License.