Slicing classifies the values of a raster map. Ranges of values of the input map are grouped together into one output class. A domain Group should be created beforehand; it lists the upper boundaries of the groups and the group names.
With Slicing, a map with for example slope values ranging from 0 to 45% can be grouped into relief classes: Flat (0-2%), Undulating (2-8%), Rolling (8-16%), Hilly (16-30%), Mountainous (>30%) (FAO).
Dialog box options:
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Input raster map: |
Select an input raster map. Open the list box and select the desired input map, or drag a raster map directly from the Catalog into this box. The input map should be a value map. |
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Output raster map: |
Type a name for the output raster map that will contain the classified values as groups. |
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Domain: |
Select the name of a domain Group which was created beforehand (click the list box), or create a new domain Group (click the little create button). |
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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.
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