python shapely延长线

要在Python中使用Shapely延长线，你可以使用Shapely的LineString对象。接下来，我将向你展示一个使用Shapely库延长线的示例代码：

首先，导入必要的包：

from shapely.geometry import Point, LineString
import matplotlib.pyplot as plt

然后，我们定义一条线段和一个延长线的起始点和结束点：

line = LineString([(1, 1), (5, 5)])  # 定义线段
extension_start = Point(3, 0)  # 延长线的起始点
extension_end = Point(0, 3)  # 延长线的结束点

接下来，我们可以使用Shapely的union函数将线段和延长线合并成一个延长线段：

extended_line = line.union(LineString([extension_start, extension_end]))

最后，你可以使用Matplotlib库绘制延长线段的图形：

fig, ax = plt.subplots()
ax.plot(*line.xy, 'r', label='Line')
ax.plot(*extended_line.xy, 'b', label='Extended Line')

# 添加标题和图例
ax.set_title('Extended Line')
ax.legend()

plt.show()

这段代码将绘制出原始线段和延长后的线段。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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