Cropping Polygons and Polylines

The Crop Overlapping Objects functionality can be used to:

It is possible to crop any polygon/polyline type against any other type of polygon/polyline or to choose to crop against objects of the same type only.

To crop objects:

  1. Select Geometry | Crop selected overlapping objects from the Model menu. This displays the Crop Selected Overlapping Objects dialog.
  2. Set options on the Crop Selected Overlapping Objects dialog:
  3. Click OK.

Selected objects will be cropped against objects of the appropriate type selected in the Crop against selection. If there is no Crop against selection, objects will be cropped against all adjacent/intersecting objects of the appropriate type.

If the Do not crop polygons with overlaps greater than (% of polygon size) option has been selected, any overlaps that are larger than the value specified in the percentage size box, will not be cropped.

If the Retain separate parts option is checked, created polygon objects will be named based on the ID of the original polygon and will inherit the properties of the original polygon with the exception of Subcatchment and Storage Node IDs.

Notes

Cropping Polygons Examples

Advanced Polygon and Polyline Editing

Crop Selected Overlapping Objects Dialog

Simplifying Object Geometry

Closing Gaps and Overlaps