Interactive Scale-dependent multidimensional Point Data Selection using enhanced Polarization Transformation - Advances in Cartography and GIScience - page 401

Figure 5: Interactive selection tool - example with 3D point data
In our example for 3D point selection, shown in Fig. 5 an initial scale of
1:1000 and an achieved percentage of 19 % of points to be eliminated were
set. Thus all together 76 points have to be eliminated. Using Töpfer's radi-
cal law corresponds to a reduced scale of 1:1500. The xy-, xz- and yz-
diagrams show the potential to be eliminated points in each perspective.
The points in red color are the identical points in all three plots. Fig. 6
illustrates the appropriate three spectrum lines. The finally deleted points
are shown in red color circles. All detailed results (deleted points in each
perspective, finally deleted points, etc.) are listed in Table 5 .