reshape_iterations {bayestestR} | R Documentation |
Reshape a wide data.frame of iterations (such as posterior draws or bootsrapped samples) as columns to long format. Instead of having all iterations as columns (e.g., iter_1, iter_2, ...
), will return 3 columns with the \*_index
(the previous index of the row), the \*_group
(the iteration number) and the \*_value
(the value of said iteration).
reshape_iterations(x, prefix = c("draw", "iter", "iteration", "sim")) reshape_draws(x, prefix = c("draw", "iter", "iteration", "sim"))
x |
A data.frame containing posterior draws obtained from |
prefix |
The prefix of the draws (for instance, |
Data frame of reshaped draws in long format.
if (require("rstanarm")) { model <- stan_glm(mpg ~ am, data = mtcars, refresh = 0) draws <- insight::get_predicted(model) long_format <- reshape_iterations(draws) head(long_format) }