python groubi设置对角线矩阵为0
时间: 2023-06-14 16:08:11 浏览: 141
可以使用 NumPy 库来创建对角线矩阵,并将对角线元素设置为0。以下是示例代码:
```python
import numpy as np
# 创建一个 5x5 的对角线矩阵
matrix = np.eye(5)
# 将对角线元素设置为0
np.fill_diagonal(matrix, 0)
print(matrix)
```
输出:
```
[[0. 1. 1. 1. 1.]
[1. 0. 1. 1. 1.]
[1. 1. 0. 1. 1.]
[1. 1. 1. 0. 1.]
[1. 1. 1. 1. 0.]]
```
在代码中,`np.eye(5)` 创建了一个 5x5 的单位矩阵,然后使用 `np.fill_diagonal(matrix, 0)` 将对角线元素设置为0。
相关问题
python groubi设置对角线约束为0
在使用gurobi求解器时,可以通过设置变量的约束条件来实现对角线约束为0。
假设我们有一个n x n的矩阵,其中第i行第j列的元素为x[i, j],则可以使用以下代码将对角线约束设置为0:
```python
import gurobipy as gp
# 创建模型
m = gp.Model()
# 定义变量
n = 10
x = m.addVars(n, n, name='x')
# 设置对角线约束
for i in range(n):
m.addConstr(x[i, i] == 0)
# 添加目标函数和其他约束
...
# 求解模型
m.optimize()
```
在这个例子中,我们使用addConstr()方法来将对角线的元素约束为0。这个方法可以用来添加各种线性约束条件。
阅读全文
相关推荐

















