Edit Feature Objects

Feature Description

Feature editing is a common geometry modification operation in chart production. Typical scenarios include merging multiple depth range polygons into a single object for unified management, or resolving gaps between adjacent objects through vertex editing and node addition. To improve data processing efficiency, the system provides 15 essential editing functions:

  • Edit node

    • Edit Node: Perform operations on selected geometry nodes, including adding, moving, and deleting nodes to alter object shapes and positions.

  • Object operation

    • Line Split: Split line or region objects using temporary drawn lines, separating all intersected objects along new boundaries.

    • Polygon Split: Split targets using temporary polygons, dividing crossed lines or regions.

    • Group: Combine any objects (lines/regions of same or different types) in current layer into a compound object, handling containment relationships as donut polygons.

    • Merge: Combine multiple line/region objects into one while unifying attributes.

    • Ungroup: Decompose complex or compound objects into simple/complex components.

    • Intersect: Calculate and retain overlapping areas of two or more objects, creating new objects while deleting non-overlapping parts.

    • Erase: Remove overlapping portions between target and eraser objects.

    • XOR: Remove common areas of objects and merge remaining parts into new objects.

    • Protective Decomposition: Preserve island-hole relationships when decomposing complex/compound objects, while decomposing non-island-hole related objects.
  • Edit endpoint

    • Split: Break line objects into new independent objects. Resulting lines display in different colors.

    • Joint Line: Connect two or more simple line objects into one, supporting end-to-end connection and proximity point connection.

  • Features

    • Resample: Reduce nodes in line/region boundaries while maintaining shape integrity for data optimization.

    • Smooth: Convert polyline boundaries into continuous smooth curves.

    • Change Direction: Reverse the direction of selected line objects.

For detailed operations of feature editing in chart edit module, refer to Edit Objects.

Related Topics

Recognize Feature

Draw Objects

Edit Feature Attributes