2.15 Define unit surrounding islands - LUPMISManual

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2. GIS data entry

2.15 Define Unit Surrounding Islands

Level of expertise required for this Chapter: Intermediate; general Map Maker training

If smaller units have been digitized and then a surrounding, larger unit around these smaller islands will convert them to islands, a different procedure has to be chosen: The Subtract island action after digitizing the larger unit.

For example: Following small units have been digitized previously, which are to be surrounded by a larger unit:

The larger unit is to be digitized as a ‘normal’ polygon, therefore right-click > Action > ‘Subtract island’:

Do not forget to assign a value (for example, to the style) with the Edit-tool from the toolbar left:


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