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Dice Polygon and Line Features

Overview​

The Dice Polygon and Line Features tool splits line or polygon features with a large number of vertices into multiple smaller features. Each output feature inherits the original attributes and attempts to meet the control requirement that the vertex count of a single feature does not exceed the specified threshold. This tool is suitable for preprocessing complex datasets.

Use Cases​

  • Preprocess complex long line data, such as roads and rivers, to reduce the geometry complexity of each feature.
  • Split administrative polygon features or parcel polygon features with many vertices to improve the stability of overlay analysis and spatial queries.
  • Reduce data complexity before publishing to WebGIS to improve map rendering and interaction performance.

Parameters​

ParameterDescriptionNotes
Input vector fileThe vector feature dataset to split.Mainly used for line and polygon feature data.
Maximum vertex countThe maximum number of vertices allowed for each split geometry.The default value is 100, and the minimum value is 10. A smaller value usually produces more split results.
Output vector fileThe output feature dataset after splitting.The output result preserves the input coordinate system and original attribute fields.

Steps​

  1. Start the tool: Open the Geoprocessing Toolbox, go to Vector Tools > Feature Processing > Feature Splitting, and open the Dice Polygon and Line Features tool pane.
  2. Set the input: Select the Input vector file.
  3. Configure parameters: Set the Maximum vertex count.
  4. Configure the output: Set the output path and file name.
  5. Run the tool: Click Run and review the result.

Notes​

  • Maximum vertex count must be greater than or equal to 10; otherwise, the tool will report an error.
  • The number of features may increase significantly after splitting. Confirm the available output storage space in advance.
  • Split child features inherit the original attributes. Keep a unique ID field for traceability.
  • For geometries with topology errors, self-intersections, or similar issues, use the Repair Geometry tool before splitting.