The Mask Polygons operation allows you to selectively copy polygons of an input polygon map into a new output polygon map. The user has to specify a mask to select and retrieve the class names, IDs or values of the polygons that are to be copied. For more information on masks, see Mask Polygons : functionality and How to use masks.
Dialog box options:
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Input polygon map: |
Select an input polygon map. Open the list box and select the desired input map, or drag a polygon map directly from the Catalog into this box. No special input map requirements. |
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Mask: |
Type (multiple) search strings to find the polygons that you want to copy. For more information, see Mask Polygons : functionality and How to use masks. |
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Output polygon map: |
Type a name for the output polygon map that will contain the copied polygons. |
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Description: |
Optionally, type a description for the output map. The description will appear in the status bar of the Main window when moving the mouse pointer over the map in a Catalog, and in the title bar of a map window when the output map is displayed. If no description is supplied, the output map will use its own definition as description. |
When you click the Show button, the dependent output map will be defined, calculated and shown. When you click the Define button, the dependent output map will only be defined; if necessary, the map will be calculated later, for instance when the map is opened to be displayed.
See also: