In metrumresearchgroup/shredder: Rstan Manipulation API

knitr::opts_chunk$set(
  collapse = TRUE,
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  fig.path = "man/figures/README-",
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shredder

The goal of shredder is to create an API that incites exploration and iteration of rstan simulation objects.

• With this API users can:
  • Manipulate fit objects without needing to convert arrays into rectangular form.
  • Generate task specifc subsets of the parent fit object for fit diagnostics and post-processing
  • Use pipe operators to create more user-friendly workflows
  • Manipulate various classes that contain a stanfit object, such as rstan and brms.
• RStudio specific feature: Tab autocomplete in shredder::stan_select and shredder::stan_filter for the parameter names stored in the fit object.

Installation

remotes::install_github('yonicd/shredder')

Current API Verbs

• chains
  • shredder::stan_retain : extract specific chains
• pars
  • shredder::stan_select : extract specific pars
  • shredder::stan_contains, shredder::stan_starts_with,shredder::stan_ends_with: partial par extractions (used within shredder::stan_select)
  • shredder::stan_names : return names within the stanfit object
• post-warmup samples
  • shredder::stan_slice : extract specific samples by index
  • shredder::stan_thin_n : Thin (remove) every n samples from the total samples
  • shredder::stan_thin_frac : Thin (remove) a fraction of total samples.
  • shredder::stan_filter : extract subset of samples conditional on filter of parameter values
• cached elements
  • shredder::stan_axe : remove cached elements for stanfit objects to reduce memory usage

Code of Conduct

Please note that the 'shredder' project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.

metrumresearchgroup/shredder documentation built on Sept. 1, 2020, 5:36 p.m.