enw_formula_as_data_list: Format formula data for use with stan

In seabbs/epinowcast: Flexible Hierarchical Nowcasting

Format formula data for use with stan

Description

Format formula data for use with stan

Usage

enw_formula_as_data_list(formula, prefix, drop_intercept = FALSE)

Arguments

formula	The output of enw_formula().
prefix	A character string indicating variable label to use as a prefix.
drop_intercept	Logical, defaults to FALSE. Should the intercept be included as a fixed effect or excluded. This is used internally in model modules where an intercept must be present/absent.

Value

A list defining the model formula. This includes:

• ⁠prefix_fintercept:⁠ Is an intercept present for the fixed effects design matrix.

• prefix_fdesign: The fixed effects design matrix

• prefix_fnrow: The number of rows of the fixed design matrix

• prefix_findex: The index linking design matrix rows to observations

• prefix_fnindex: The length of the index

• prefix_fncol: The number of columns (i.e effects) in the fixed effect design matrix (minus 1 if an intercept is present).

• prefix_rdesign: The random effects design matrix

• prefix_rncol: The number of columns (i.e random effects) in the random effect design matrix (minus 1 as the intercept is dropped).

See Also

Functions used to help convert models into the format required for stan enw_get_cache(), enw_model(), enw_pathfinder(), enw_priors_as_data_list(), enw_replace_priors(), enw_sample(), enw_set_cache(), enw_stan_to_r(), enw_unset_cache(), remove_profiling(), write_stan_files_no_profile()

Examples

f <- enw_formula(~ 1 + (1 | cyl), mtcars)
enw_formula_as_data_list(f, "mtcars")

# A missing formula produces the default list
enw_formula_as_data_list(prefix = "missing")

seabbs/epinowcast documentation built on Feb. 3, 2025, 9:56 p.m.