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Fig. 15: Differences between the comercial and SRTM-based Slovenian DEMs
Figs. 16 to 18 give some more insight into the SRTM-based DEM height error magnitude.
Figs. 16 and 17 show height errors along two diagonals: from lower-left corner to upper-right
corner (Fig. 16) and form upper-left corner to lower-right corner (Fig. 17). We can see that
errors of 20 m and even twice that much are not uncommon.
Fig. 16: Profile difference - lower-left corner to upper-right corner diagonal
Fig. 17: Profile difference - upper-left corner to lower-right corner diagonal
Fig 18 contains a histogram of height difference in Fig. 15. It shows that the mean height
error is approximatelly 0 and that the majority of errors are below about 30 m.
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