The diagram below shows how vector buffers are generated. Once these objects are constructed around each segment, they are overlayed and aggregated, so the duplicate areas are removed. Reclassification Reclassification is a method for simplifying complex phenomena, and is used in a GIS for generalisation and enhancement. It is a process that changes the assignment of objects from one classification system to another. Aggregation of areas based on certain attributes is achieved by either combining polygons or combining classes.
Reclassification is carried out by converting an input map to an output map.
The output map contains a lookup table that recodes the old classes to new classes. The resulting map includes polygons that are reduced in complexity, making analysis and other operations easier. Classification may be used to display the different landuses, soils, vegetation, or rock types in a region. Below are some examples of reclassified images. Click on a thumbnail to view an enlarged image.