brms (version 2.15.0)

plot.brmsfit: Trace and Density Plots for MCMC Samples

Description

Trace and Density Plots for MCMC Samples

Usage

# S3 method for brmsfit
plot(
  x,
  pars = NA,
  combo = c("dens", "trace"),
  N = 5,
  fixed = FALSE,
  exact_match = FALSE,
  theme = NULL,
  plot = TRUE,
  ask = TRUE,
  newpage = TRUE,
  ...
)

Arguments

x

An object of class brmsfit.

pars

Names of the parameters to plot, as given by a character vector or a regular expression. By default, all parameters except for group-level and smooth effects are plotted.

combo

A character vector with at least two elements. Each element of combo corresponds to a column in the resulting graphic and should be the name of one of the available MCMC functions (omitting the mcmc_ prefix).

N

The number of parameters plotted per page.

fixed

Indicates whether parameter names should be matched exactly (TRUE) or treated as regular expressions (FALSE). Default is FALSE.

exact_match

Deprecated alias of argument fixed.

theme

A theme object modifying the appearance of the plots. For some basic themes see ggtheme and theme_default.

plot

Logical; indicates if plots should be plotted directly in the active graphic device. Defaults to TRUE.

ask

Logical; indicates if the user is prompted before a new page is plotted. Only used if plot is TRUE.

newpage

Logical; indicates if the first set of plots should be plotted to a new page. Only used if plot is TRUE.

...

Further arguments passed to mcmc_combo.

Value

An invisible list of gtable objects.

Examples

# NOT RUN {
fit <- brm(count ~ zAge + zBase * Trt 
           + (1|patient) + (1|visit), 
           data = epilepsy, family = "poisson")
plot(fit)
## plot population-level effects only
plot(fit, pars = "^b_") 
# }
# NOT RUN {
# }