LinearConstraint#
- class scipy.optimize.LinearConstraint(A, lb=-inf, ub=inf, keep_feasible=False)[source]#
Linear constraint on the variables.
The constraint has the general inequality form:
lb <= A.dot(x) <= ub
Here the vector of independent variables x is passed as ndarray of shape (n,) and the matrix A has shape (m, n).
It is possible to use equal bounds to represent an equality constraint or infinite bounds to represent a one-sided constraint.
- Parameters:
- A{array_like, sparse matrix}, shape (m, n)
Matrix defining the constraint.
- lb, ubdense array_like, optional
Lower and upper limits on the constraint. Each array must have the shape (m,) or be a scalar, in the latter case a bound will be the same for all components of the constraint. Use
np.inf
with an appropriate sign to specify a one-sided constraint. Set components of lb and ub equal to represent an equality constraint. Note that you can mix constraints of different types: interval, one-sided or equality, by setting different components of lb and ub as necessary. Defaults tolb = -np.inf
andub = np.inf
(no limits).- keep_feasibledense array_like of bool, optional
Whether to keep the constraint components feasible throughout iterations. A single value set this property for all components. Default is False. Has no effect for equality constraints.
Methods
residual
(x)Calculate the residual between the constraint function and the limits