Feature Description

The erase function is used to remove the part of the target object that overlaps with the erasing object.

Target Object	Erasing Object	Operation Result

Hold the Ctrl key to switch erase effects. The erase effect while 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 object.
• The target object can be a line or polygon object, but the erasing object must be a polygon object.
• The layer containing target objects must be editable. Supports Multi-layer Editing.
• The erase operation requires data integrity. Data with topology errors (e.g., self-intersections) is not allowed. For complex data, it's recommended to perform topology validation and correct errors before erasing.

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 Features tab's Feature Editing group Gallery control, 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), then left-click to complete the erase operation.
4. Continue selecting target objects for erasing. Right-click to exit the erase function.