Module linopt
Lua bindings to interact with linopts.
Functions
__gc (linopt) | Frees a linopt. |
__eq (d1, d2) | Compares two linopts to see if they are the same. |
new ([name=nil], cols, rows[, maximize=false]) | Opens a new linopt. |
size (lp) | Adds columns to the linear program. |
add_cols (lp, cols) | Adds columns to the linear program. |
add_rows (lp, rows) | Adds rows to the linear program. |
set_col (lp, index, name, coefficient[, kind="real"[, lb=nil[, ub=nil]]]) | Adds an optimization column. |
set_row (lp, index, name[, lb=nil[, ub=nil]]) | Adds an optimization row. |
load_matrix (lp, row_indices, col_indices, coefficients) | Loads the entire matrix for the linear program. |
solve (lp) | Solves the linear optimization problem. |
read_problem (fname[, glpk_format=false[, maximize=false]]) | Reads an optimization problem from a file for debugging purposes. |
write_problem (lp, fname[, glpk_format=false]) | Writes an optimization problem to a file for debugging purposes. |
Functions
- __gc (linopt)
-
Frees a linopt.
Parameters:
- linopt Optim Optim to free.
- __eq (d1, d2)
-
Compares two linopts to see if they are the same.
Parameters:
- d1 Optim Optim 1 to compare.
- d2 Optim Optim 2 to compare.
Returns:
-
boolean
true if both linopts are the same.
- new ([name=nil], cols, rows[, maximize=false])
-
Opens a new linopt.
Parameters:
- name string Name of the optimization program. (default nil)
- cols number Number of columns in the optimization program.
- rows number Number of rows in the optimization program.
- maximize boolean Whether to maximize (rather than minimize) the function. (default false)
Returns:
-
Optim
New linopt object.
- size (lp)
-
Adds columns to the linear program.
Parameters:
- lp LinOpt Linear program to modify.
Returns:
- number Number of columns in the linear program.
- number Number of rows in the linear program.
- add_cols (lp, cols)
-
Adds columns to the linear program.
Parameters:
- lp LinOpt Linear program to modify.
- cols number Number of columns to add.
- add_rows (lp, rows)
-
Adds rows to the linear program.
Parameters:
- lp LinOpt Linear program to modify.
- rows number Number of rows to add.
- set_col (lp, index, name, coefficient[, kind="real"[, lb=nil[, ub=nil]]])
-
Adds an optimization column.
Parameters:
- lp LinOpt Linear program to modify.
- index number Index of the column to set.
- name string Name of the column being added.
- coefficient number Coefficient of the objective function being added.
- kind string Kind of the column being added. Can be either "real", "integer", or "binary". (default "real")
- lb number Lower bound of the column. (default nil)
- ub number Upper bound of the column. (default nil)
- set_row (lp, index, name[, lb=nil[, ub=nil]])
-
Adds an optimization row.
Parameters:
- lp LinOpt Linear program to modify.
- index number Index of the row to set.
- name string Name of the row being added.
- lb number Lower bound of the row. (default nil)
- ub number Upper bound of the row. (default nil)
- load_matrix (lp, row_indices, col_indices, coefficients)
-
Loads the entire matrix for the linear program.
Parameters:
- lp LinOpt Linear program to modify.
- row_indices number Indices of the rows.
- col_indices number Indices of the columns.
- coefficients number Values of the coefficients.
- solve (lp)
-
Solves the linear optimization problem.
Parameters:
- lp LinOpt Linear program to modify.
Returns:
- number The value of the primal funcation.
- table Table of column values.
- read_problem (fname[, glpk_format=false[, maximize=false]])
-
Reads an optimization problem from a file for debugging purposes.
Parameters:
- fname string Path to the file.
- glpk_format boolean Whether the program is in GLPK format instead of MPS format. (default false)
- maximize boolean Whether to maximize (rather than minimize) the function. (default false)
Returns:
-
LinOpt
Linear program in the file.
- write_problem (lp, fname[, glpk_format=false])
-
Writes an optimization problem to a file for debugging purposes.
Parameters:
- lp LinOpt Linear program to write.
- fname string Path to write the program to.
- glpk_format boolean Whether to write the program in GLPK format instead of MPS format. (default false)