Returns the coefficients (or posterior samples for Bayesian models) from a model.

get_parameters(x, ...)

# S3 method for rqss
get_parameters(x, component = c("all", "conditional", "smooth_terms"), ...)

# S3 method for coxme
get_parameters(x, effects = c("fixed", "random"), ...)

# S3 method for merMod
get_parameters(x, effects = c("fixed", "random"), ...)

# S3 method for rlmerMod
get_parameters(x, effects = c("fixed", "random"), ...)

# S3 method for mixed
get_parameters(x, effects = c("fixed", "random"), ...)

# S3 method for lme
get_parameters(x, effects = c("fixed", "random"), ...)

# S3 method for MixMod
get_parameters(
  x,
  effects = c("fixed", "random"),
  component = c("all", "conditional", "zi", "zero_inflated", "dispersion"),
  ...
)

# S3 method for glmmTMB
get_parameters(
  x,
  effects = c("fixed", "random"),
  component = c("all", "conditional", "zi", "zero_inflated", "dispersion"),
  ...
)

# S3 method for BBmm
get_parameters(x, effects = c("fixed", "random"), ...)

# S3 method for glimML
get_parameters(x, effects = c("fixed", "random", "all"), ...)

# S3 method for gamm
get_parameters(x, component = c("all", "conditional", "smooth_terms"), ...)

# S3 method for Gam
get_parameters(x, component = c("all", "conditional", "smooth_terms"), ...)

# S3 method for gam
get_parameters(x, component = c("all", "conditional", "smooth_terms"), ...)

# S3 method for vgam
get_parameters(x, component = c("all", "conditional", "smooth_terms"), ...)

# S3 method for zeroinfl
get_parameters(
  x,
  component = c("all", "conditional", "zi", "zero_inflated"),
  ...
)

# S3 method for aovlist
get_parameters(x, effects = c("fixed", "random", "all"), ...)

# S3 method for MCMCglmm
get_parameters(x, effects = c("fixed", "random", "all"), ...)

# S3 method for BFBayesFactor
get_parameters(x, iterations = 4000, progress = FALSE, ...)

# S3 method for stanmvreg
get_parameters(
  x,
  effects = c("fixed", "random", "all"),
  parameters = NULL,
  ...
)

# S3 method for brmsfit
get_parameters(
  x,
  effects = c("fixed", "random", "all"),
  component = c("all", "conditional", "zi", "zero_inflated", "dispersion", "simplex",
    "sigma", "smooth_terms"),
  parameters = NULL,
  ...
)

# S3 method for stanreg
get_parameters(
  x,
  effects = c("fixed", "random", "all"),
  parameters = NULL,
  ...
)

# S3 method for sim.merMod
get_parameters(
  x,
  effects = c("fixed", "random", "all"),
  parameters = NULL,
  ...
)

Arguments

x

A fitted model.

...

Currently not used.

component

Should all parameters, parameters for the conditional model, the zero-inflated part of the model, the dispersion term or the instrumental variables be returned? Applies to models with zero-inflated and/or dispersion formula, or to models with instrumental variable (so called fixed-effects regressions). May be abbreviated.

effects

Should parameters for fixed effects, random effects or both be returned? Only applies to mixed models. May be abbreviated.

iterations

Number of posterior draws.

progress

Display progress.

parameters

Regular expression pattern that describes the parameters that should be returned.

Value

  • for non-Bayesian models and if effects = "fixed", a data frame with two columns: the parameter names and the related point estimates

  • if effects = "random", a list of data frames with the random effects (as returned by ranef()), unless the random effects have the same simplified structure as fixed effects (e.g. for models from MCMCglmm)

  • for Bayesian models, the posterior samples from the requested parameters as data frame

  • for Anova (aov()) with error term, a list of parameters for the conditional and the random effects parameters

  • for models with smooth terms or zero-inflation component, a data frame with three columns: the parameter names, the related point estimates and the component

Details

In most cases when models either return different "effects" (fixed, random) or "components" (conditional, zero-inflated, ...), the arguments effects and component can be used.

get_parameters() is comparable to coef(), however, the coefficients are returned as data frame (with columns for names and point estimates of coefficients). For Bayesian models, the posterior samples of parameters are returned.

Examples

data(mtcars) m <- lm(mpg ~ wt + cyl + vs, data = mtcars) get_parameters(m)
#> Parameter Estimate #> 1 (Intercept) 38.7460642 #> 2 wt -3.2463673 #> 3 cyl -1.3641033 #> 4 vs 0.5241721