Slope (Slicing-Majority Filter-Clip)

Slope (Slicing-Majority Filter-Clip)

Slope (Slicing-Majority Filter-Clip)

1. Open the application ILWIS 3.3 Academic
2. DEM_av right click> Imagge Processing> filter ...
3. Filter Name> select DFDX
4. output> DX> Show> OK
5. DEM_av right click> Imagge Processing> filter ...
6. Filter Name> select DFDY
7. output> DY> Show> OK
8. Type "Slope_PCt = 100 * HYP (DX, DY) / 5"> Enter key Takan> Show
9. After that will come the result slope of DX and DY
10. Right click on Slope_PCt> Image Processing> Slicing ...
11. Fill output with Slope_pct_classs
12. Add domain> check the group and enter the domain name with Slope_pct-class
13. Add domains item> upper Bound: 10 and Name: 0-10> OK
14. Add again to
Upper Bound: 20 40 60 1000
Name: 10-20% 20-40% 40-60%> 60%
15. Click open Representation
16. Change colors as you wish (it is recommended that no change)
17. Close the window and click Show
18. Akna emerging results
19. Right click on slope_pct_class> Imagge Processing> filter ...
20. changing the filter type> majority, filter name> Majority, Output> Slope_pct_M1> Show
21. Right click on slope_pct_M1> Imagge Processing> filter ...
22. changing the filter type> majority, filter name> Majority, Output> Slope_pct_M2> Show
23. Click the polygon map> right click catchment> polygon to raster ...
24. GeoRef> Best_GeoRef> Show> OK
25. back to the raster map and write on koment line "Clip_slope_pct = iff ((catchment =" catchment ") or (Slope_pct_m2 =" slope_pct_m2 "), slope_pct_m2,?)"
26. Click show to see results
27. To view the histogram right click on Clip_slope_pct> statistics> Histogram ... > show
28. To be more clear in the reading right click on Clip_slope_pct> Raster Operations> Numbering Area ...
29. Output> Clip_slope_pct_area> show> OK
30. The results will come out when we click on an existing attribute

For more details see the following video tutorial

or can be downloaded here

DOWNLOAD