RasterCoverage

In Ilwis-Objects remote sensing imagery is accessed through raster-coverages. In this context a raster-coverage is a stack of 2D rasters (1..n) in which all layers of the stack have the same raster size and pixel size. The z component is referred to as the ‘layer-index’ or ‘index’. A layer is always rectangular as are its pixels. As a raster coverage relation between its pixels and the real world is covered by the georeference class. It translates pixel positions to real world coordinates and vice-versa.