Читать книгу Imagery and GIS - Kass Green - Страница 82

ArcGIS Online dynamically serves the pixel values for eight bands (no thermal or panchromatic) of all scenes of moderate-resolution Landsat 8 imagery worldwide at no charge. It also serves the Landsat Global Land Survey composites of Landsats 1 through 7, created by NASA and USGS, of decadal Landsat imagery. In addition, ArcGIS Online serves multiple cached moderate- and low-resolution imagery from a variety of international space agencies.