Read GMPL/MathProg Model File — register_index

Parse a GLPK/MathProg (GMPL) model file and return a model_structure object. This is the intermediate representation that can be converted to multimod format using as_multimod().

Usage

register_index_alias(collection, set_name, alias_name)

Arguments

model_file: Path to GMPL model file (.txt or .mod), or a character vector containing the model code lines (for in-memory parsing)
data_file: Optional path to separate .dat data file, or character vector containing data lines (not yet implemented for parsing, but can be provided)
as_multimod: Logical. If TRUE (default), convert directly to multimod_model object. If FALSE, return model_structure object.
verbose: Logical. If TRUE, print parsing progress (default FALSE)

Value

A model_structure object (or multimod_model if as_multimod=TRUE)

Examples

if (FALSE) { # \dontrun{
# From file paths
mod_struct <- read_gmpl("osemosys.txt", as_multimod = FALSE)

# From in-memory character vectors (e.g., package data)
data(example_models)
model <- read_gmpl(
  model_file = example_models$OSeMOSYS$gmpl$model,
  data_file = example_models$OSeMOSYS$gmpl$data
)

# Convert to multimod
model <- as_multimod(mod_struct)

# Or directly
model <- read_gmpl("osemosys.txt", as_multimod = TRUE)
} # }