polygon-union ("plyu")

See this command in the command table.

To access this command:

  • Digitize ribbon >> Tools >> Combine >> Polygon Union.

  • Using the command line, enter "polygon-union".

  • Use the quick key combination "plyu".

  • Display the Find Command screen, locate polygon-union and click Run.

Command Overview

Create a unified perimeter based on other loaded closed strings. How this command operates depends on the relative arrangement of the target strings:

  • If overlapping polygons are selected in the 3D window, this command creates a new polygon which contains the area inside all of them.
  • If separate polygons are selected in the 3D window, this command creates an identical polygon for each selected item.

Note: A variation of this command - polygon-union-delete-originals - erases the original polygon data before creating the shared area polygon.

Command steps:

  1. Create overlapping polygons using either the new-polygon or new-string command, for example

  1. Select all overlapping polygons, and run the command.

  2. A new polygon is created that contains the area inside all overlapping polygons:

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