trace_plot

Create a trace plot for a single desired node

The aim of 'postpack' is to provide the infrastructure for a standardized workflow for 'mcmc.list' objects.
These objects can be used to store output from models fitted with Bayesian inference using
'JAGS', 'WinBUGS', 'OpenBUGS', 'NIMBLE', 'Stan', or even custom MCMC algorithms. Although the 'coda' R package provides
some methods for these objects, it is somewhat limited in easily performing post-processing tasks for
specific nodes. Models are ever increasing in their complexity and the number of tracked nodes, and oftentimes
a user may wish to summarize/diagnose sampling behavior for only a small subset of nodes at a time
for a particular question or figure. Thus, many 'postpack' functions support performing tasks on a
subset of nodes, where the subset is specified with regular expressions. The functions in 'postpack'
streamline the extraction, summarization, and diagnostics of specific monitored nodes after model fitting.
Further, because there is rarely only ever one model under consideration, 'postpack' scales efficiently
to perform the same tasks on output from multiple models simultaneously, facilitating rapid assessment
of model sensitivity to changes in assumptions.

Ben Staton

postpack

Utilities for Processing Posterior Samples Stored in
'mcmc.lists'

trace_plot function

<dl><dt>post</dt>
<dd>A <code>mcmc.list</code> object.</dd>
<dt>param</dt>
<dd>A regular expression that matches a single element in the model.
E.g., <code>"b0[1]"</code>, not <code>"b0"</code>. See <code>match_params()</code>.</dd>
<dt>keep_percent</dt>
<dd>A numeric vector of length == 1 and on the range (0,1].
Percent of samples you'd like to keep for trace plotting and passed to <code>post_thin()</code>.</dd></dl>

Arguments

Create a trace plot for a single desired node — trace_plot

<dl>

<dt>post</dt>
<dd>A <code>mcmc.list</code> object.</dd>


<dt>param</dt>
<dd>A regular expression that matches a single element in the model.
E.g., <code>"b0[1]"</code>, not <code>"b0"</code>. See <code>match_params()</code>.</dd>


<dt>keep_percent</dt>
<dd>A numeric vector of length == 1 and on the range (0,1].
Percent of samples you'd like to keep for trace plotting and passed to <code>post_thin()</code>.</dd>

</dl>

trace_plot: Create a trace plot for a single desired node

Description

Usage

Arguments