Reads an MPS file via glpkAPI and returns the constraint matrix in long/tidy form so it can be grouped by constraint or variable. Optional regular expressions allow filtering rows/columns before extraction and the resulting data can be split per constraint or per variable.
Usage
mps_matrix_long(
file,
rows = NULL,
cols = NULL,
partition = c("none", "row", "column"),
verbose = FALSE
)Arguments
- file
Path to the MPS file
- rows
Optional character vector of regular expressions used to select constraint (row) names. Default NULL keeps every constraint.
- cols
Optional character vector of regular expressions used to select variable (column) names. Default NULL keeps every variable.
- partition
One of "none", "row", or "column" specifying whether the returned object should be a single data frame (none) or a list split by constraint/variable.
- verbose
Logical; print progress while extracting (default FALSE)