“…The Randomwalk simulation corresponds to the Image data if we imagine that the brightness values for each pixel are numbers representing events at (10 m)2 locations; indeed, the radiance values are linear and homogeneous transformations of the energy received within the frequency limits of the sensor (SPOT, 1988). Although the simulation shown in Figure 9 might be an adequate representation of cloud data (Joseph, 1985) or perhaps chaotic terrain (Goodchild, 1982;Jones et al, 1989), it bears only weak resemblance to the study image but is certainly closer than Gauss. The fractal plot of this simulation, shown in Figure 10, is also different from that of the Gauss process.…”