Some of the above mentioned problems with generalization strategies involving bi-directional data conversion can be
avoided if the transformation is kept local. The principle is illustrated in figure 12. Such transformations normally only
occur from vector to raster, where generalization operations are applied, followed by subsequent re-transformation to
the vector model (vector – raster – vector). The main advantage of local conversions is that the sampling resolution for
the raster part can be coordinated with the specific properties of the patches involved and the planned generalization
algorithms.