Equation-aware data preparation for TMB continuous-only demand models.
Handles zero filtering, log transformation, and subject ID mapping.
Usage
.tmb_prepare_data(data, y_var, x_var, id_var, equation)
Arguments
- data
A validated data frame.
- y_var
Character string, name of consumption variable.
- x_var
Character string, name of price variable.
- id_var
Character string, name of subject ID variable.
- equation
Character string, one of "exponential", "exponentiated",
"simplified", "zben".
Value
A list containing prepared data vectors and subject mapping.
