Merge
Feature Description
In practical applications, we may need to merge objects. For example: When you want to combine Heilongjiang, Jilin, and Liaoning provinces into Northeast China on the national administrative map, you can select these three area objects and use the merge operation to synthesize the Northeast region. Merge supports area or line objects.
Various special cases may occur during merge operations. The following explains these scenarios separately.
- Current layer is area layer
- If areas participating in the operation intersect at points, they will be merged into a complex area object (the figure below shows creating a complex area object with two sub-objects).
- If areas participating in the operation intersect along lines, their adjacent boundaries will disappear and merge into a simple area object.
- If areas participating in the operation overlap, they will be recombined into a simple area object.
- If areas participating in the operation are non-adjacent and non-overlapping, merging will create a complex area object (the figure below shows creating a complex area object with three sub-objects).
- If areas participating in the operation intersect at points, they will be merged into a complex area object (the figure below shows creating a complex area object with two sub-objects).
- Current layer is composite layer
- In CAD layers: Line objects, curve objects, elliptic arcs, and arcs will generate line objects after operation; Area objects, rectangles, circles, and oblique ellipses will generate area objects after operation.
- Cross-layer merge
- During cross-layer merging, selected objects from other layers will be merged with objects in the current editable layer. Only objects in the current editable layer will change, while objects in other layers remain unchanged. When multi-layer editing is enabled, select which editable layer's objects to merge in the Merge window. Supports setting whether to delete the unselected objects from the editable layer.
Feature Entry
- Features tab->Feature Editing group->Merge.
- Map context menu->Merge button.
Steps
- With layer editable, select two or multiple objects.
- Click Merge in the Gallery control of Feature Editing group under Features tab to open Merge dialog.
- In the dialog, configure objects to retain. For descriptions of attribute processing dialog and parameters, see Attribute Processing Dialog Description.
- Click OK to complete object merging.
Related Topics