Subset an MCMC object — subset • mcmcr

Subsets an MCMC object by its chains, iterations and/or parameters.

# S3 method for mcmcarray
subset(x, chains = NULL, iters = NULL, iterations = NULL, ...)

# S3 method for mcmcr
subset(
  x,
  chains = NULL,
  iters = NULL,
  pars = NULL,
  iterations = NULL,
  parameters = NULL,
  ...
)

# S3 method for mcmcrs
subset(
  x,
  chains = NULL,
  iters = NULL,
  pars = NULL,
  iterations = NULL,
  parameters = NULL,
  ...
)

Arguments

x: The MCMC object to subset
chains: An integer vector of chains.
iters: An integer vector of iterations.
iterations: An integer vector (or NULL) of the iterations to subset by.
...: Unused.
pars: A character vector of parameter names.
parameters: A character vector (or NULL) of the parameters to subset by.

Methods (by class)

subset(mcmcarray): Subset an mcmcarray object
subset(mcmcr): Subset an mcmcr object
subset(mcmcrs): Subset an mcmcrs object

See also

universals::split_chains()

Examples

subset(mcmcr_example,
  chains = 2L, iters = 1:100,
  pars = c("beta", "alpha")
)
#> $beta
#>           [,1]     [,2]
#> [1,] 0.7591235 1.759124
#> [2,] 1.7591235 2.759124
#> 
#> nchains:  1 
#> niters:  100 
#> 
#> $alpha
#> [1] 3.044835 4.044835
#> 
#> nchains:  1 
#> niters:  100 
#>