Feature Erase
Erase

Feature Description

The Erase function removes the part of the target object that overlaps with the erasing object.

Target Object Erasing Object Result

Hold down the Ctrl key to toggle the erase effect. The erase effect when holding Ctrl is shown below:

Erasing and Target Objects Operation Result
  • The Erase function applies to polygon layers and CAD layers, and becomes available only when layer editing is enabled and objects are selected.
  • The target object and erasing object cannot be the same.
  • The target object can be a line or polygon object, but the erasing object must be a polygon object.
  • The layer containing the target object must be editable. Supports Multi-layer Editing.
  • The erase operation requires data topological integrity. Data with topological errors (e.g., self-intersections) is not allowed. For complex data, it's recommended to validate topology and correct errors before performing erase operations.

Feature Entry

  • Features tab->Feature Editing group->Erase.

Steps

  1. With the layer editable, select one or more erasing objects (polygon objects).
  2. In the Gallery control of the Feature Editing group under the Features tab, click the Erase button;
  3. Mouse prompt: "Select target polygon object... Press Ctrl to switch to external erase". Select a target object (line or polygon object) and left-click to complete the erase operation.
  4. Continue selecting target objects to perform erase operations. Right-click to exit the erase function.