Plotting functions for posterior analysis, model checking, and MCMC diagnostics. The package is designed not only to provide convenient functionality for users, but also a common set of functions that can be easily used by developers working on a variety of R packages for Bayesian modeling, particularly (but not exclusively) packages interfacing with 'Stan'.
(GitHub issue/PR numbers in parentheses)
Loading bayesplot no longer overrides the ggplot theme! There are new functions for controlling the ggplot theme for bayesplot that work like their ggplot2 counterparts but only affect plots made using bayesplot. Thanks to Malcolm Barrett. (#117, #149)
bayesplot_theme_set()bayesplot_theme_get()bayesplot_theme_update()bayesplot_theme_replace()The Visual MCMC Diagnostics vignette has been reorganized and has a lot of useful new content thanks to Martin Modrák. (#144, #153)
The LOO predictive checks
now require loo version >= 2.0.0. (#139)
Histogram plots gain a breaks argument that can be used as an alternative to binwidth. (#148)
mcmc_pairs()
now has an argument grid_args to provide a way of passing optional arguments to
gridExtra::arrangeGrob(). This can be used to add a title to the plot, for example. (#143)
ppc_ecdf_overlay()
gains an argument discrete, which is FALSE by default, but can be used to make the
Geom more appropriate for discrete data. (#145)
PPC intervals plots
and LOO predictive checks
now draw both an outer and an inner probability interval, which can be
controlled through the new argument prob_outer and the already existing
prob. This is consistent with what is produced by mcmc_intervals().
(#152, #154, @mcol)
(GitHub issue/PR numbers in parentheses)
New package documentation website: http://mc-stan.org/bayesplot/
Two new plots that visualize posterior density using ridgelines. These work well when parameters have similar values and similar densities, as in hierarchical models. (#104)
mcmc_dens_chains() draws the kernel density of each sampling chain.mcmc_areas_ridges() draws the kernel density combined across chains._data() function to return the data plotted by
each function.mcmc_intervals() and mcmc_areas() have been rewritten. (#103)
mcmc_areas() now uses geoms from the ggridges package to draw density
curves.Added mcmc_intervals_data() and mcmc_areas_data() that return data
plotted by mcmc_intervals() and mcmc_areas(). (Advances #97)
New ppc_data() function returns the data plotted by many of the PPC plotting
functions. (Advances #97)
Added ppc_loo_pit_overlay() function for a better LOO PIT predictive check.
(#123)
Started using vdiffr to add visual unit tests to the existing PPC unit tests. (#137)
(GitHub issue/PR numbers in parentheses)
New plotting function mcmc_parcoord() for parallel coordinates plots of
MCMC draws (optionally including HMC/NUTS diagnostic information). (#108)
mcmc_scatter gains an np argument for specifying NUTS parameters, which
allows highlighting divergences in the plot. (#112)
New functions with names ending with suffix _data don't make the plots,
they just return the data prepared for plotting (more of these to come in
future releases):
ppc_intervals_data() (#101)ppc_ribbon_data() (#101)mcmc_parcoord_data() (#108)mcmc_rhat_data() (#110)mcmc_neff_data() (#110)ppc_stat_grouped(), ppc_stat_freqpoly_grouped() gain a facet_args
argument for controlling ggplot2 faceting (many of the mcmc_ functions
already have this).
The divergences argument to mcmc_trace() has been deprecated in favor
of np (NUTS parameters) to match the other functions that have an np
argument.
Fixed an issue where duplicated rhat values would break mcmc_rhat() (#105).
(GitHub issue/PR numbers in parentheses)
bayesplot::theme_default() is now set as the default ggplot2 plotting theme
when bayesplot is loaded, which makes changing the default theme using
ggplot2::theme_set() possible. Thanks to @gavinsimpson. (#87)
mcmc_hist() and mcmc_hist_by_chain() now take a freq argument that
defaults to TRUE (behavior is like freq argument to R's hist
function).
Using a ts object for y in PPC plots no longer results in an error.
Thanks to @helske. (#94)
mcmc_intervals() doesn't use round lineends anymore as they slightly
exaggerate the width of the intervals. Thanks to @tjmahr. (#96)
A lot of new stuff in this release. (GitHub issue/PR numbers in parentheses)
Avoid error in some cases when divergences is specified in call to
mcmc_trace() but there are not actually any divergent transitions.
The merge_chains argument to mcmc_nuts_energy() now defaults to FALSE.
For mcmc_*() functions, transformations are recycled if transformations
argument is specified as a single function rather than a named list. Thanks
to @tklebel. (#64)
For ppc_violin_grouped() there is now the option of showing y as a
violin, points, or both. Thanks to @silberzwiebel. (#74)
color_scheme_get() now has an optional argument i for selecting only a
subset of the colors.
New color schemes: darkgray, orange, viridis, viridisA, viridisB, viridisC. The viridis schemes are better than the other schemes for trace plots (the colors are very distinct from each other).
mcmc_pairs(), which is essentially a ggplot2+grid implementation of
rstan's pairs.stanfit() method. (#67)
mcmc_hex(), which is similar to mcmc_scatter() but using geom_hex()
instead of geom_point(). This can be used to avoid overplotting. (#67)
overlay_function() convenience function. Example usage: add a Gaussian (or
any distribution) density curve to a plot made with mcmc_hist().
mcmc_recover_scatter() and mcmc_recover_hist(), which are similar to
mcmc_recover_intervals() and compare estimates to "true" values used to
simulate data. (#81, #83)
New PPC category Discrete with functions:
ppc_rootogram() for use with models for count data. Thanks to
@paul-buerkner. (#28)ppc_bars(), ppc_bars_grouped() for use with models for ordinal,
categorical and multinomial data. Thanks to @silberzwiebel. (#73)New PPC category LOO (thanks to suggestions from @avehtari) with functions:
ppc_loo_pit() for assessing the calibration of marginal predictions.
(#72)ppc_loo_intervals(), ppc_loo_ribbon() for plotting intervals of the
LOO predictive distribution. (#72)(GitHub issue/PR numbers in parentheses)
Images in vignettes should now render properly using png device. Thanks to
TJ Mahr. (#51)
xaxis_title(FALSE) and yaxis_title(FALSE) now set axis titles to NULL
rather than changing theme elements to element_blank(). This makes it
easier to add axis titles to plots that don’t have them by default. Thanks
to Bill Harris. (#53)
Add argument divergences to mcmc_trace() function. For models fit using
HMC/NUTS this can be used to display divergences as a rug at the bottom of
the trace plot. (#42)
The stat argument for all ppc_stat_*() functions now accepts a function
instead of only the name of a function. (#31)
ppc_error_hist_grouped() for plotting predictive errors by level of a
grouping variable. (#40)
mcmc_recover_intervals)( for comparing MCMC estimates to "true" parameter
values used to simulate the data. (#56)
bayesplot_grid() for juxtaposing plots and enforcing shared axis limits.
(#59)
Initial CRAN release
"ggridges package"