Smooth

Function Description

Edit Data The Feature Editing group on the tab provides the function to process the boundary lines of line or region geometries. The curve smoothing function primarily smooths the boundary lines of lines or regions, transforming polylines into continuous smooth line objects.

The controls in the Feature Editing group are only available when there are selected geometries (lines and regions) in editable layers in the map.

  • The Smooth function is used to smooth the boundary lines of selected lines or regions in editable layers in the current map.
  • Smoothness indicates the degree to which the original line object becomes smoother. This parameter value is proportional to the number of nodes in the transformed line object. Its value type is an integer, ranging from 2 to 10.
  • For an explanation of the curve smoothing principle and results, please refer to: Smooth Method Description.
  • The line object involved in smooth line must be a line object with three or more nodes. Because a straight line between two points is already a smooth line, no smooth line is needed.

Function Entry

  • Edit Data tab -> Feature Editing group -> General editing -> Trimming -> Smooth

Operation Instructions

  1. Set the layer containing the geometries (lines or regions) to be smoothed in the map to an editable state.
  2. Select the geometries (lines or regions) to be smoothed. You can hold down the Shift or Ctrl key to select multiple geometries continuously.
  3. In the General editing drop-down menu on the Edit Data tab, click the Smooth button in the Trimming group to pop up the Curve Smoothness Settings dialog.
  4. In the text box to the right of Smoothness, enter the value for curve smoothness. The default value is 4.
  5. To smooth geometries in other layers in the map, repeat steps 1 to 4 above.
  6. Click the OK button to complete the curve smooth line for the selected objects.
Note:

When multi-layer editing is enabled, users can select multiple lines and regions from multiple editable layers simultaneously to perform curve smoothing operations.