The document outlines a geoprocessing workflow using ArcMap for vector analysis focusing on soil types and site selection criteria. It details the steps needed to extract and process land use data, specifically identifying suitable bushland areas while applying various conditions such as distance from inhabited areas and streams. The final output highlights selected sites that meet all specified criteria with respect to soil type and proximity to roads.

1. Geoprocessing: Vector Analysis
.
Soil Type Bearing Capacity (kN/sq. m.)
Gravel 450
MediumSand 250
Fine Sand 150
SoftClay 100
Steps:1
Openfile toworkwithinArcMap.
In thiscase, openD:/Practical Data/Geographical Analysis(Vector)andselectlanduse,roads,
streamsand soil files streamsandsoil files.
Checkthe attributesof the layersadded – especiallyforlanduse andsoil.
Categorize these layersintodifferentcolorsperfieldtype if needed.(Rightclicklayer-
>properties->categories->selectfieldandshow all values)
1. we needonlybushland.
‘Select’tool inAnalysistoolsof ArcToolbox.
Give inputas Landuse.shp,giveoutputfilename asbushland.shp.inSql window,give command
LU_type = “Bush land”

2. Using'Select' Tool
Bushlanddisplayed
Figure:Bush land separated

3. Condition:2, site shouldnotbe inhabited.Sincewe alreadyextractedbushlandoutof the map, the same done for
inhabited
Condition:3,the site shouldbe within500mdistance from inhabitedarea.
To get the 500m bufferof inhabitedarea,we needtoseparate inhabitedareafromthe landuse
map first,using‘Select’tool asbefore.
Nowwe give LU_TYPE = “Inhabited”inSQLwindow.
Figure: Inhabited land separated

4. Afterseparatinginhabitedarea,bufferthe inhabitedareaby500m.
To selectsite within500mbufferof inhabitedarea,use clip tool with:
Inputfile as‘bushland.shp’,Clipfeature as‘inhabited500.shp’ andoutputfile asop_clip1.shp
Figure: Op_clip1.shp
Condition 4:our site mustnot be within150m of streams.
For this,we have to bufferstreamsby150m. Then use the erase tool to remove the portionsof
the site (op_clip1.shp) thatintersectswiththe bufferedstreamfile.

5. To bufferstreamsby150, use buffertool
Figure: streams before buffering

6. Nowuse the erase tool to remove the portionsof the site within150m bufferof streams:
Figure:op_clip2.shp
Condition 5: the site mustbe within500m of the existingroad.So,we have tobufferroadby 500m and
clipour currentoutputfile op_clip2.shpwiththe bufferedroadfile.
To bufferthe roadby 500m, use buffertool
Thenclipthe outputfile withroadbufferfile withinputfileasop_clip2,andclipfeature asRoad500.shp

7. Outputfile isnamedasop_clip3.shp
Figure: op_clip3.shp
Condition6:To get siteswithgravel only,we have tofirstseparate gravel fromothersoil typesinthe
map.

8. Use selecttool forseparating:
Figure:Separating 'gravel' soil type

9. Nowto getthe portionsof the outputfile whichhave gravel,use cliptool withInputfileas
‘op_clip3.shp’andclipfeature as‘gravel.shp’
Figure:op_clip4.shp
Condition:7, our site should notbe within100m of the road.
To create bufferof road for 100m:

10. Thenusingerase tool,remove commonportions:
Final op
Figure:final site selected is highlighted in red color