Vector Data Handling with a GIS Raster-Based

The growing use of remote sensed imagery and D.E.M., for instance, in land planning and environmental studies is in favour of G.I.S. raster-based. Nevertheless, the availability and the selectivity of vector formated data force their joint processing. This communication deals with techniques allowing simultaneous handling of vector information and raster imagery, according to raster, vector, or hybrid algorithms. The vector to raster technology used by the current display devices makes the implementation of such procedures easier. Exemples of different classes of vector representation are used jointly with remote sensed images to illustrate the items under discussion.