Intersect

Applicability:

• Cadcorp SIS Map Modeller
• Cadcorp SIS Map Editor
• Cadcorp SIS ActiveX Modeller

Ribbon Group:

Analysis-Boolean Operations

Conditions for use:

• Item Class: LineString / Polygon
• Minimum number selected: 2
• Minimum item status: Editable

Associated commands:

• Dissolve
• Subtract
• Symmetric Difference
• Union

Description:

 Intersect replaces the selected items with an item containing common geometry, all parts which did not overlap in the original are deleted.

Note: if you want to keep the original, you should make a copy before carrying out Intersect.

Example:

1. Select the Polygon  items (two or more), the items must overlap.
   
   
2. Select Intersect. The Select item to keep dialog is displayed to prompt you for which item you want to keep.
   
   
   Click on Previous and Next to switch between items.
   
   Note: If you do not want the Select item to keep dialog to be displayed every time you snap onto overlying items uncheck the Automatic tickbox.
   
   
3. Click OK in the dialog showing the item you wish to keep, in this example Area 2 is chosen, the following item will be created:

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