Objective know the location of areas prone to landslides in sumedang

Data Preparation Contour River Roads Soil Geology Landuse

Processing of Data Import Data Creating Coordinate System Vektor to raster Contour to slope Segment to buffer Spatial Multi Criteria Evaluation Layout Map

Impor DataFirstly before process data, we must import data vektor shp if we want to using in ILWIS. Kind of process is : 1. Click file on Menu bar then choose Import/Map then it would appear dialog box Import 2. Choose file vektor countour (shp)/write output then click OK 3. Now, do the process Import until all data finish import

Write Name Output

Cont..

Output Import Data

Creating Coordinate System1. Click File/Create/Coordinate System 2. Give Name and Choose Coordsystem Projection 3. Choose CoordSystem Projection

Write Name

Cont.. 3. Clik Projection/UTM and OK

4. Click Ellipsoid/WGS 84/OK 5. Click Datum/WGS 1984/OK 6. Change Zone (48) aggre with zone located UTM Earth 7. Uncheck Northem Hemisphere

Input Coordinat to Vektor Data1. 2. 3. 4. Browse your folder data file. ight Click to Vektor Contour then choose properti Change Coordinat System then choose Sumedang2 Click Apply and OK Now, do the same process 1 3 for other vektors data (River, Road, Geology, Luse, contour and Soil)

Differend After and Before Input Coordinate System

Before

After

Changes Polygon and Segment to RasterBefore make rasters data we must choose attribute score for classification 1. Right Click data choose Vektor Operation/Attribute Map 2. Change Attribute,choose SKOR_GEOL and give name to output then choose Define or show

Cont..

3. Right Click to Polygon Geology then choose Polygon to Raster 4. Give Name to Output then choose Georeference, 5. Change Coordinate System then choose Sumedang2 6. Give name for Georeference then Change Pixel size become 15 m/OK 7. Click Define and Show if you want to see display output raster data. 8. Now, do the process 1 8 for other polygon, but for contour your choose attribute TINGGI and you must choose same Georeference to other data

Display Geology

Vektor

Raster

Segment to raster1. 2. Right click data river then choose Rasterize/Segment to raster Give name to Output Raster Map and then choose georeference Sumedang2 /Define

Creating River Buffer1. Open Operation-list 2. Double click Distance calculation 3. Choose Source Map/ Give name/write the number 100 in coloum max on the value range 4. Now, do the process Segment to Raster and Creating River for data Roads

Display River Buffer

Creating Slope using Contour Data Raster1. 2. Create an interpolated height map from segment contour lines To calculate height differences in X-direction: start the Filter operation, select the Digital Elevation Model as the input map and select linear filter dfdx. Call the output map for example DX. To calculate height differences in Y-direction: start the Filter operation again, select the Digital Elevation Model as input map and select linear filter dfdy. Call the output map for example DY. To calculate a slope map in percentages from these maps DX and DY, type on the command line of the Main window: SLOPEPCT = 100 * HYP(DX,DY)/ PIXSIZE(DEM) Creating Domain to classification SLOPECT

3.

4.

5.

Creating DEM1. Right click contour_height then choose contour Interpolate 2. Give name of the Output then choose sumedang2 georeference 3. Define

Display DEM

Creating DFDX and DFDY1 2

3

1. 2. 3.

Right click DEM data then choose Image Processing/Filter Input DEM data then filter name choose DFDX and give name to output/Define Now , do the same process for make data DFDY.

Display

DFDX

DFDX

Creating SLOPECTSLOPEPCT = 100 * HYP(DX,DY)/ PIXSIZE(DEM)

1. Copy formula SLOPECT on the command line of the Main window SLOPEPCT = 100 * HYP(DX,DY)/ PIXSIZE(DEM) then change DX,DY and DEM using your data 2. Click Define or Show

Display SLOPEPCT

Creating Domain for slope classification2 1

3 4

Combine SLOPEPCT with Domain

Classification SLOPE MAP

Spatial Multi Criteria Evaluation1. Click Spatial Multi criteria Evaluation/Problem Analysis 2. Change name New Goal become to your goal 3. Click Insert Spatial Factor for creating faktor into your group then write name

Cont..4. Creating factor associated with the group that was created. 5. Input data maps that are relevant to the criteria that have been made, The maps are used as input must have a georeferenced raster format and the same. For inputting the map, double click on the pink up as shown below

Creating Factor

Making Standardization1. 2. Click Multi Criteria Analysis choose factor then click standardize.. For the case of industrial estates suitability select standardization "Cost" as closer to the access roads leading to and from the site the better. Then to select the method of "Goal for X2 as the maximum distance.

Cont..3. 4. Group Factor for distance from the river using standardization 'Benefit' and methods of Goal, enter the demarcation of the river that must not be built X1 (eg 100m) Now, do the procces 3 for the Soil, Geology and Land use but don t you change value on methods of Goal

Cont.. Creating standardize for slope Add slope-skor then enter the range value 0-1 Explain to them based on the steepness of slope, a value of 0 = 15 - > 45%, but a value of 1 = 0 15% Click Refresh Attribute List then OK

Standardize all the factor1. 2. After all the factors and constraints in the standardization, the next step is to give weight to each factor. Next we sort of criteria which are most influential to the criteria of the smallestClick This

Creating Output1. Click Generate All Output 2. OK

Display Output SMCE

A value of 1 indicates that the area prone to landslides and a value of 0 indicates that the low area to landslides

Making Layout1. 2. Create domain for classification and combine Domain with Output Data Create Layout from existhing map, choose file then create layout

Cont.3. 4. Click Insert to make map view, legenda and other information from map. After making other legenda and map information, click file then choose export to Bitmap/write name/OK

Layout