start_point_on_line = line_geometry.firstPoint start_point_on_line_geometry = arcpy.PointGeometry(start_point_on_line, line_geometry.spatialReference) intersecting_features = arcpy.Intersect_analysis([start_point_on_line_geometry, input_features], arcpy.Geometry())
时间: 2024-04-09 11:32:17 浏览: 11
根据您提供的代码片段,错误可能出现在 `arcpy.Intersect_analysis` 函数的调用中。请确保参数 `input_features` 是一个有效的要素集合,可以被正确地与 `start_point_on_line_geometry` 进行交集操作。
此外,还需要确保 `start_point_on_line_geometry` 是一个有效的点几何对象,并且具有正确的空间参考。您可以使用 `line_geometry.spatialReference` 来设置起始点几何对象的空间参考。
如果问题仍然存在,请提供更多的代码上下文或错误信息,以便我能够更准确地帮助您解决问题。
相关问题
ntersecting_features = arcpy.Intersect_analysis([start_point_on_line_geometry, input_features], arcpy.Geometry()) if len(intersecting_features) == 1: # 如果只有起始点自身相交,则添加到悬挂点图层 insert_cursor.insertRow((start_point_on_line, line_oid))
根据您提供的代码片段,我看到您使用ArcPy库进行地理空间分析。中的`arcpy.Intersect_analysis`函数用于计算起始点与输入要素之间的交集,并将结果保存在`intersecting_features`变量中。
接下来,通过检查`intersecting_features`的长度,即交集要素的数量,来判断起始点是否只与自身相交。如果交集要素的数量为1,表示起始点只与自身相交,那么会将起始点及其对应的线要素ID添加到悬挂点图层中。
需要注意的是,代码中使用了一个名为`insert_cursor`的插入游标,用于将起始点和线要素ID插入悬挂点图层中。
这段代码的作用是寻找起始点自身相交的情况,并将这些起始点及其对应的线要素ID添加到悬挂点图层中。
o3d.io.read_point_cloud源代码
o3d.io.read_point_cloud函数是Open3D库中用于读取点云数据的函数。其源代码如下:
```python
def read_point_cloud(filename: str,
format: Optional[str] = None,
remove_nan_points: bool = True,
remove_infinite_points: bool = True,
print_progress: bool = False) -> 'open3d.geometry.PointCloud':
"""Function to read point cloud from file.
Args:
filename (str): path of the point cloud file.
format (str, optional): format of the file. If not provided, the
format will be inferred from the filename extension.
remove_nan_points (bool, optional): whether to remove NaN points.
remove_infinite_points (bool, optional): whether to remove infinite
points.
print_progress (bool, optional): whether to print progress information.
Returns:
open3d.geometry.PointCloud: an instance of the `open3d.geometry.PointCloud`
containing the point cloud data.
"""
if format is None:
format = utility._get_file_extension_lower(filename)
format = format.lower()
# Check if format is supported.
if format not in _READABLE_FORMATS:
raise ValueError(f"Unsupported file format '{format}'")
# Call the appropriate read function based on format.
if format == 'xyz':
return read_xyz(filename, remove_nan_points, remove_infinite_points,
print_progress)
elif format == 'xyzn':
return read_xyz_normal(filename, remove_nan_points,
remove_infinite_points, print_progress)
elif format == 'pts':
return read_pts(filename, remove_nan_points, remove_infinite_points,
print_progress)
elif format == 'ply':
return read_ply(filename, remove_nan_points, remove_infinite_points,
print_progress)
elif format == 'pcd':
return read_pcd(filename, remove_nan_points, remove_infinite_points,
print_progress)
elif format == 'fbx':
return read_fbx(filename, remove_nan_points, remove_infinite_points,
print_progress)
elif format == 'obj':
return read_triangle_mesh(filename).sample_points_poisson_disk(
number_of_points=0)
elif format == 'stl':
return read_triangle_mesh(filename).sample_points_poisson_disk(
number_of_points=0)
else:
raise ValueError(f"Unsupported file format '{format}'")
```
该函数首先判断文件格式是否支持,然后根据文件格式调用对应的读取函数,例如对于PLY格式的点云文件,会调用`read_ply`函数进行读取。最终返回一个`open3d.geometry.PointCloud`对象。