获得 ArcGIS Maritime 许可后可用。
Expands (pulls apart) contour lines that are snapped together. This preserves representative depth areas.
此工具会修改输入数据。 有关详细信息以及避免数据被意外更改的策略，请参阅修改或更新输入数据的工具。
Collapsed vertices (either within a contour or between contours) are pulled apart where possible by pulling them toward the line made between neighboring vertices. Where the angle is too shallow to allow an offset of the specified expansion distance, that vertex will be removed.
The tool modifies the features in the Target Contours parameter.
The tool deletes zero-length features.
The tool snaps points to 10 times the x,y resolution of the target contours when determining collapsed vertices.
Duplicate vertices on contours are removed.
The tool messages the feature object ID and collapsed vertices it expands.
When a collapsed vertex involves an endpoint of a floating contour, a warning message is generated in the output. Ensure that you review any instances identified.
The Expansion Distance parameter is optional. The default is five times S-57 precision (0.0000005).
| 标注 | 说明 | 数据类型 |
Target Contours
| The feature class containing the contours to be expanded. | Feature Layer |
Expansion Distance
(可选) | The distance that contours will be expanded based on the coordinate system of the target contours. The default is 5e-7 decimal degrees based on the WGS84 geographic coordinate system. | Double |
| 标注 | 说明 | 数据类型 |
| Updated Contours | The updated feature class. | Feature Layer |
arcpy.maritime.ExpandCollapsedContours(target_contours, {expansion_distance})| 名称 | 说明 | 数据类型 |
target_contours | The feature class containing the contours to be expanded. | Feature Layer |
expansion_distance (可选) | The distance that contours will be expanded based on the coordinate system of the target contours. The default is 5e-7 decimal degrees based on the WGS84 geographic coordinate system. | Double |
| 名称 | 说明 | 数据类型 |
| updated_contours | The updated feature class. | Feature Layer |
The following Python window script demonstrates how to use the ExpandCollapsedContours function.
# Import arcpy module
import arcpy
# Check for Nautical extension
if arcpy.CheckExtension("nautical") == "Available":
arcpy.CheckOutExtension("nautical")
print ("License checked out successfully ....")
else:
raise ex("Maritime license is unavailable.")
#Tool variables
target_contours = r"C:\ExpandCollapsedContours\Contours.gdb\Nautical\DepthsL"
expansion_distance = 5E-07
# Run the tool
arcpy.maritime.ExpandCollapsedContours(target_contours,expansion_distance)