At a minimum, items in the data file include the image pathname and the bounding coordinates xmin , ymin and xmax , ymax . Image integrator commands georeference images to real-world coordinates, display images, and manage image catalogs. Resistance may be a measure of travel distance, time, speed of travel times the length, and so on. Higher impedance indicates more resistance to movement, with 0 indicating no cost. Often, a negative impedance value indicates a barrier.
Impedance is used in network routing and allocation.
See also item indexing , cross-tile indexing and spatial indexing . The polygon coverage that describes, and is used as a spatial index for, the tile structure of a layer. Each polygon in an index coverage corresponds to a tile. This subdirectory contains all feature attribute tables for the set of coverages contained in the workspace. Integer values can be less than, equal to, or greater than zero.