多边定位最小二乘法的python代码
时间: 2024-10-14 09:15:45 浏览: 75
多边形定位最小二乘法通常用于地理信息系统(GIS)中,用来确定一组观测点最接近某个预设多边形的中心位置。Python有多种库可以实现这个功能,例如`scipy.optimize`或`geopandas`结合`shapely`库。
这里是一个简单的例子,使用`scipy`的`optimize.leastsq`函数实现多边形最小二乘拟合:
```python
from scipy.optimize import leastsq
import numpy as np
from shapely.geometry import Polygon
# 假设我们有一个预设的多边形
polygon = Polygon([(x0, y0), (x1, y1), ...]) # 根据需要提供多边形坐标
def residuals(polygon_points, observation_points):
# polygon_points是我们想要优化的位置参数
center = (sum(x * polygon_points[0] for x in polygon.exterior.coords) / sum(x * polygon_points[0] ** 2 for x in polygon.exterior.coords),
sum(y * polygon_points[0] for y in polygon.exterior.coords) / sum(y * polygon_points[0] ** 2 for y in polygon.exterior.coords))
error = [np.linalg.norm(np.array(center) - np.array(point)) for point in observation_points]
return error
# 假设observation_points是已知观测点的坐标列表
initial_guess = [1, 1] # 开始猜测一个中心点
result, _ = leastsq(residuals, initial_guess, args=(list(observation_points),))
center_of_polygon_fit = result # 现在我们得到了最优的中心位置
```
阅读全文
相关推荐
![zip](https://img-home.csdnimg.cn/images/20241231045053.png)
![docx](https://img-home.csdnimg.cn/images/20241231044901.png)
![rar](https://img-home.csdnimg.cn/images/20241231044955.png)
![-](https://img-home.csdnimg.cn/images/20241231045053.png)
![zip](https://img-home.csdnimg.cn/images/20241231045053.png)
![zip](https://img-home.csdnimg.cn/images/20241231045053.png)
![rar](https://img-home.csdnimg.cn/images/20241231044955.png)
![zip](https://img-home.csdnimg.cn/images/20241231045053.png)
![-](https://img-home.csdnimg.cn/images/20241231045053.png)
![-](https://img-home.csdnimg.cn/images/20241231045053.png)
![-](https://img-home.csdnimg.cn/images/20241231045053.png)
![-](https://img-home.csdnimg.cn/images/20241231045053.png)
![-](https://img-home.csdnimg.cn/images/20241231045053.png)
![-](https://img-home.csdnimg.cn/images/20241226111658.png)
![-](https://img-home.csdnimg.cn/images/20241226111658.png)
![-](https://img-home.csdnimg.cn/images/20241226111658.png)
![-](https://img-home.csdnimg.cn/images/20241226111658.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![rar](https://img-home.csdnimg.cn/images/20241231044955.png)