Collect manually run samples

Collect samples from chains that have been run with monty_sample_manual_prepare and monty_sample_manual_run. If any chain has not completed, we will error.

Usage

monty_sample_manual_collect(
  path,
  samples = NULL,
  restartable = FALSE,
  append = TRUE
)

Arguments

path

The path used in the call to monty_sample_manual_prepare

samples

Samples from the parent run. You need to provide these where save_samples was set to anything other than "value"

restartable

Logical, indicating if the chains should be restartable. This will add additional data to the chains object. Note that this is controlled at chain collection and not creation.

append

Logical, indicating if we should append the results of the resumed chain together with the original chain.

Value

A monty_samples object.

Examples

model <- monty_example("banana")
sampler <- monty_sampler_random_walk(vcv = diag(2) * 0.05)
path <- tempfile()
monty_sample_manual_prepare(model, sampler, 100, path)
monty_sample_manual_info(path)
#> 
#> ── Manual monty sampling at /tmp/Rtmp8opvbi/file16a25035b6 ─────────────────────
#> ℹ Created 2024-11-20 17:14:58
#> ℹ 100 steps x 1 chains
#> ✖ No chains complete

# Run the (single) chain
monty_sample_manual_run(1, path)
monty_sample_manual_info(path)
#> 
#> ── Manual monty sampling at /tmp/Rtmp8opvbi/file16a25035b6 ─────────────────────
#> ℹ Created 2024-11-20 17:14:58
#> ℹ 100 steps x 1 chains
#> ✔ All chains complete

# Collect the results
monty_sample_manual_collect(path)
#> 
#> ── <monty_samples: 2 parameters x 100 samples x 1 chain> ───────────────────────
#> ℹ Parameters: 'alpha' and 'beta'
#> ℹ Conversion to other types is possible:
#> → ✔ posterior::as_draws_array() [package loaded]
#> → ✔ posterior::as_draws_df() [package loaded]
#> → ✔ coda::as.mcmc.list() [package loaded]
#> ℹ See `?monty_sample()` and `vignette("samples")` for more information

# Clean up samples
monty_sample_manual_cleanup(path)