Results - Response of Flood Events to Land Use and Climate Change - page 161

Fig. 6.28 Frequency
distribution of DEMs error.
a Comparison between 5 and
10 m before resampling;
b comparison between 5 and
10 m after resampling

(a)

(b)

Figure 6.29 illustrates the results of Table 6.14 as graphs, with the red repre-
senting the source values and blue representing estimated values. Perhaps the most
interesting screens (in terms of what SAM does compare with most software) are
exploring spatial patterns in the model, especially in model residuals (the green
line of the correlogram).
Negative (positive) values indicate negative (positive) spatial autocorrelation.
Values range from -1 (indicating perfect dispersion) to +1 (perfect correlation). A
zero value indicates a random spatial pattern. The high Moran's I in both DEMs
before and after resampling showing perfect correlation in the first distance
(Table 6.15 ).
Figure 6.30 shows the comparison between DEM 5 m resolution, DEM 10 m
resolution before resampling and DEM 10 m resolution after resampling in
schematic shape of the 3D plot for 10,000 selected point elevations.