Extract information for Physiography Report

Extract information for Physiography Report

Extract information for Physiography Report

1. Open the application ILWIS 3.3 Academic
2. Open the tab back_ground raster map
3. Add layer by clicking the add layer data> catchment_boundary> OK> OK
4. Click Edit> Edit Layer> 2 seg catchment_boundary
5. Snap and tunnel tolerance to 0 at File> customize ...
6. Draw a line to the tool insert mode in accordance with the lines on the map
7. When there are warning Splite segme ... then select OK
8. After completion will appear lines are interconnected at the border on the map
9. Click File> Polygonize ... > Insert the name of the output with Sub_base> add domain and enter the name of the Sub_base> OK> OK
10. If there is a warning only segments select YES
11. Bring segment (more details to see video)
12. Dead End To check whether or not there is a way> File> Check SEGMENTS> Dead Ends ... > OK> If a warning has shown no dead ends is not there then we proceed to the next step if there is to be checked again
13. File> polygonize ... > Insert the name of the output with Sub_base> insert domain with sub_base that we created earlier> OK
14. Click the area you will be given the name of the> class name> New> insert name and color with a red> OK
15. Fill up all over the place colored
16. Do not forget to always keep the project
17. Right click on the tab Sub_base polygon map> select Polygon to Raster ...
18. Fill GeoReference with Best_GeoRef that we created earlier> Show> OK
19. Right-click the tab Sub_base existing raster map> select Raster Operations> Cross ...
20. 2nd Map: Aspect_Flat_nine> Output table: aspect_Sub_base> Check the list on the Output folder> Output folder: aspect_Sub_base> OK> table will appear on the data aspects of the sub base that we created
21. Perform the operation again cross between sub_base with clip_slope_pct, right click Sub_base> Raster Operations> Cross ...
22. 2nd Map: clip_slope_pct> Output table: Slope_Subbase> Check the list on the Output folder> Output folder: Slope_Subbase> OK> will appear on the data table slope on the sub base that we created


For more details see the following video tutorial

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Gravity Center

Gravity Center

Gravity Center 

1. Open the application ILWIS 3.3 Academic
2. Open catchment in raster map
3. Right click on the catchment> vectorize> Raster-to-point ...
4. Fill output catchment_point> show> OK
5. Constituent picture will emerge with the points very much
6. Open the tab catchment_point point folder> right click and select Open as table
7. Click View> command line, to bring up the command line
8. Type X = CRDX (Coordinate)> OK
9. Will munucul new column that contains X
10. Type Y = CRDy (Coordinate)> OK
11. Click on view> statistics Pane
12. Back to the main window and then click File> create> Table
13. fill in the name of the table with G_Center> Record: 1> OK
14. add columns by clicking Columns> add column
15. Fill in the name of the column with X> OK
16. Add a column and named Y
17. Back to the table and then copy cathment_point Average X by right click> copy or CTRL C
18. And paste it into the table G_Center in column X
19. Do it again on the Y, Y Average copy and paste the table into catchment_point Y column in the table G_Center
20. Go to the main window and then click the folder table located above the command line and right click on G_Center> Table Operations> table to PointMap ...
21. Select the Coordinate System UTM_WGS1984
22. Enter the G_Center Output> Show> OK
23. Open the file Catchment Polygon map> add layer by clicking the Add layer and add G_Center
24. The result will be the mid-point of the polygon catchment is on the screen


For more details see the following video tutorial

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Profile (River Profile)

Profile (River Profile) 

Profile (River Profile) 

1. Open the application ILWIS 3.3 Academic
2. Click the Segment folders on the toolbar above comment Line
3. It would appear that type of file segments only
4. Right click on the River> vectorize> Segment to Point ...
5. Click the radio and moved to distance> 5.00 and fill fill point with River_point Output> Show> OK
6. On the screen will appear showing the circles of the river segment
7. Add layer by clicking the add layer> then enter the river> OK> OK
8. Then return to the main window> Click on Point folder> Right Click River_point> Open as Table
9. It would appear all the data on the coordinates in the stream segmentation
10. Type the command into the command line Distance = (% e-1) * 5> press Enter> OK
11. It would appear that our new column named distance was
12. Type the command into the command line ALTITUDE = MapValue (DEM_av.mpr, coordinate)> OK
13. Emerging new table will appear on Altitude
14. To display the statistics click View> Statistics Pane
15. Will appear min, max, average, standard deviation, and sum
16. create graphs by clicking on the Graph toolbar menu located on the command line
17. Fill in the X-Axis and Y-Axis Distance with Altitude> OK
18. Graph will appear
19. Back to the table and then type in the command line with Area = altitude * 5> press Enter> OK

For more details see the following video tutorial



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Hypsometry (Slicing-Majority Filter-Clip)

Hypsometry (Slicing-Majority Filter-Clip)

Hypsometry (Slicing-Majority Filter-Clip) 

1. Open the application ILWIS 3.3 Academic 
2. Type DEM_catchment = iff (catchment = "catchment") AND (DEM_av), DEM_av.?)
3. Then click the Show> OK will appear outcome
4. Right click on the file DEM_catchment> Image Processing> Slicing ...
5. Add new domain> Give a domain name with Hipsometery> OK
6. Tambakan item with Upper Bound, Class Name, Code: 900, <900, 1> 1000, 900-1000, 2> 1100, 1000-1100, 3> up to 2600, 2400-2600, 17
7. To view and change color when the Representation
8. after click Show> OK
9. Click on the color on the right side so that the color appears> OK
10. Right click on Hipsometery> Statistics> Histogram> Show
11. Will emerging data on the existing color topografy
12. To view a live histogram of DEM_catchment right click on DEM_catchment> Statistics> Histogram ... > Show
13. To know the result of the area then we go to View> Command Line
14. Then will come the Comment line and enter the command> Area_Sum = value * area> Enter
15. It would appear a new column containing the value and area pengkalian

For more details see the following video tutorial

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Aspect (Slicing-Majority Filter-Clip)

Aspect (Slicing-Majority Filter-Clip)

Aspect (Slicing-Majority Filter-Clip)

1. Open the application ILWIS 3.3 Academic
2. Write "Aspect = raddeg (atan2 (dx, ddy) pi)"
3. Then click show> OK
4. It would appear the result
5. Aspect right click> image processing> Slicing ...
6. Output aspect_nine, create a new domain> Aspect_nine enter the domain name and check the group, width 15> OK
7. Add domain item
Upper Bound, Class Name: 22.5, North> 67.5, North-East> 112.5, East> 157.5, South-East> 202.5, South> 247.5, South-West> 292.5, West> 337.5, North-West> 361, North2
8. change the color of the Representation
9. then click on the show if you want to display the result
10. Click on the available colors to the left so that representation appears
11. Back to the main window and then type "Aspect_Flat_nine = ifundef (aspect_nine," flat ", Aspect_nine)"
12. Press the Enter> Show> Yes> OK
13. It will be seen clearly the contours on the map
14. Click Aspect_Flat_nine> Image Processing> Filters ...
15. Select the type of filter and the filter name to be Majority Majority, Output fill Aspect_M> show> OK
16. Write them in the comments line "Aspect_catchment = iff ((catchment =" catchment ") or (Aspect_m =" aspect_m "), Aspect_m,?)"> Show> OK
17. To view the histogram right click on Aspect_catchment> statistics> Histogram ... > show
18. To be more clear in the reading right click on Aspect_catchment> Raster Operations> Numbering Area ...
19. Output> Aspect_nine_area> show> OK
20. The results will come out when we click on an existing attribute


For more details see the following video tutorial

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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

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Create DEM

Create DEM

Create DEM

1. Open the application ILWIS 3.3 Academic
2. Click the All Object to remove all objects
3. Click to view the segment Segment Maps folder file we created earlier
4. Right click on the file and select Open Topo
5. A check on the info> OK
6. trying to navigate the mouse pointer over the lines and going out info neighbor topology of a map> close the window when finished
7. Right click on Topo again> select Contour Interpolation ...
8. Add GeoReference click the button beside the field georefence
9. Give it a name like Best_GeoRef
10. Fill Pixel Size with 5> OK
11. Click Show if you want to see results
12. You will see a map of the results to be colored contour map and there are no lines anymore
13. Close window DEM> Click the Raster Map TopoRasterized file that appears
14. double click or right click open on TopoRasterized> OK
15. The lines will look tepotong topography into pieces when brought near
16. Close window> click the folder back segment> Right click on the topo
17. Select Rasterize> Segment to Raster ...
18. Choose GeoReference be Best_GeoRef> Show> OK
19. Select Point folder> right click on the Pick> select Rasterize> point to raster> GeoReference> Besk_GeoRef> show> OK
20. If nothing happens, add a layer by clicking the Add Layer icon> select Pick the top> OK
21. Back click Rater folder to check what we have made earlier
22. Write "Topo_pick = iff (isundef (pick), topo, pick)" in Command line
23. Then click Show to see the results> OK
24. Write "DEM_topo_pick = mapinterpolcontour (topo_pick)"> show
25. Contour map will appear that looks more presentable and will appear as well DEM_topo_pick file
26. DEM_topo_pick right click> Image Processing> filter ...
27. Filter Type> Average, Output fill with DEM_av> show> OK
28. Delete all files and folders raster except Back_ground DEM_av


For more details see the following video tutorial

or can be downloaded here

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