LPWrapper
- class pyopenms.LPWrapper
Bases:
objectCython implementation of _LPWrapper
Original C++ documentation is available here
- __init__(self) None
Methods
__init__(self)Overload:
Overload:
deleteRow(self, index)Delete index-th row
getColumnIndex(self, name)Returns index of the column with name
getColumnLowerBound(self, index)Returns column's lower bound
getColumnName(self, index)Returns name of the index-th column
getColumnType(self, index)Returns column/variable type.
getColumnUpperBound(self, index)Returns column's upper bound
getColumnValue(self, index)getElement(self, row_index, column_index)Returns the element
getMatrixRow(self, idx, indexes)getNumberOfColumns(self)Returns number of columns
getNumberOfNonZeroEntriesInRow(self, idx)getNumberOfRows(self)Returns number of rows
getObjective(self, index)Returns objective value for column with index
getObjectiveSense(self)Returns objective sense
getObjectiveValue(self)getRowIndex(self, name)Returns index of the row with name
getRowLowerBound(self, index)Returns row's lower bound
getRowName(self, index)Sets name of the index-th row
getRowUpperBound(self, index)Returns row's upper bound
getSolver(self)Returns currently active solver
getStatus(self)Returns solution status
readProblem(self, filename, format_)Read LP from file
setColumnBounds(self, index, lower_bound, ...)Sets column bounds
setColumnName(self, index, name)Sets name of the index-th column
setColumnType(self, index, type_)Sets column/variable type.
setElement(self, row_index, column_index, value)Sets the element
setObjective(self, index, obj_value)Sets objective value for column with index
setObjectiveSense(self, sense)Sets objective direction
setRowBounds(self, index, lower_bound, ...)Sets row bounds
setRowName(self, index, name)Sets name of the index-th row
solve(self, solver_param, verbose_level)Solve problems, parameters like enabled heuristics can be given via solver_param
writeProblem(self, filename, format_)Write LP formulation to a file
- LPWrapper_Type
alias of
pyopenms._pyopenms_2.__LPWrapper_Type
- SOLVER
alias of
pyopenms._pyopenms_2.__SOLVER
- Sense
alias of
pyopenms._pyopenms_2.__Sense
- SolverStatus
alias of
pyopenms._pyopenms_2.__SolverStatus
- VariableType
alias of
pyopenms._pyopenms_2.__VariableType
- WriteFormat
alias of
pyopenms._pyopenms_2.__WriteFormat
- addColumn()
Overload:
- addColumn(self) int
Adds an empty column to the LP matrix, returns index
Overload:
- addColumn(self, column_indices: List[int], column_values: List[float], name: Union[bytes, str, String]) int
Adds a column to the LP matrix, returns index
Overload:
- addColumn(self, column_indices: List[int], column_values: List[float], name: Union[bytes, str, String], lower_bound: float, upper_bound: float, type_: int) int
Adds a column with boundaries to the LP matrix, returns index
- addRow()
Overload:
- addRow(self, row_indices: List[int], row_values: List[float], name: Union[bytes, str, String]) int
Adds a row to the LP matrix, returns index
Overload:
- addRow(self, row_indices: List[int], row_values: List[float], name: Union[bytes, str, String], lower_bound: float, upper_bound: float, type_: int) int
Adds a row with boundaries to the LP matrix, returns index
- deleteRow(self, index: int) None
Delete index-th row
- getColumnLowerBound(self, index: int) float
Returns column’s lower bound
- getColumnType(self, index: int) int
Returns column/variable type.
- getColumnUpperBound(self, index: int) float
Returns column’s upper bound
- getColumnValue(self, index: int) float
- getElement(self, row_index: int, column_index: int) float
Returns the element
- getMatrixRow(self, idx: int, indexes: List[int]) None
- getNumberOfColumns(self) int
Returns number of columns
- getNumberOfNonZeroEntriesInRow(self, idx: int) int
- getNumberOfRows(self) int
Returns number of rows
- getObjective(self, index: int) float
Returns objective value for column with index
- getObjectiveSense(self) int
Returns objective sense
- getObjectiveValue(self) float
- getRowLowerBound(self, index: int) float
Returns row’s lower bound
- getRowUpperBound(self, index: int) float
Returns row’s upper bound
- getSolver(self) int
Returns currently active solver
- getStatus(self) int
Returns solution status
- Returns
status: 1 - undefined, 2 - integer optimal, 3- integer feasible (no optimality proven), 4- no integer feasible solution
- readProblem(self, filename: Union[bytes, str, String], format_: Union[bytes, str, String]) None
Read LP from file
- Parameters
filename – Filename where to store the LP problem
format – LP, MPS or GLPK
- setColumnBounds(self, index: int, lower_bound: float, upper_bound: float, type_: int) None
Sets column bounds
- setColumnName(self, index: int, name: Union[bytes, str, String]) None
Sets name of the index-th column
- setColumnType(self, index: int, type_: int) None
Sets column/variable type.
- setElement(self, row_index: int, column_index: int, value: float) None
Sets the element
- setObjective(self, index: int, obj_value: float) None
Sets objective value for column with index
- setObjectiveSense(self, sense: int) None
Sets objective direction
- setRowBounds(self, index: int, lower_bound: float, upper_bound: float, type_: int) None
Sets row bounds
- solve(self, solver_param: SolverParam, verbose_level: int) int
Solve problems, parameters like enabled heuristics can be given via solver_param
The verbose level (0,1,2) determines if the solver prints status messages and internals
- Parameters
solver_param – Parameters of the solver introduced by SolverParam
verbose_level – Sets verbose level
- Returns
solver dependent