R - Commands  
REGION_DI (command)
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It deletes an island from a region

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 Command line: REGION_DI

 

The REGION_DI command deletes a previously added island from a region. The following prompt is displayed: Select a region: select a previously created region. If the region includes only one island, the island will be deleted; if it includes multiple islands, a prompt will ask to specify a point inside the island to be deleted.

 

Also see:

REGION