Digitization arc gis

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DIGITIZING – MARKING STUDY AREA ON TOPOSHEET

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Digitization arc gis

  1. 1. DIGITIZING – MARKING STUDY AREA ON TOPOSHEET1. Launch ArcMap from StartProgramsArcGISArcMap.2. Click A New Empty Map from the window.3. Click the Add Data button to add mosaiced toposheet(RectifyDDN_53j16.tif) located in X:Exercise2 folder, to your map.4.Click the Add Data button to add Vector Shapefile created usingArcCatalog named Open_pine located in X:Exercise2Digitization folder,to your map.5. If the spatial reference warning message dialog appears Click OK.6. Zoom in and pan to the location from where you want tostart digitizing the boundary of the Open_Pine.7. If not already visible, then open the Editor toolbar (click onin the Standard toolbar to open the Editor toolbar).8. Alternatively, Editor Toolbar can also be opened by right click onstandard toolbar and selecting Editor (as was done for Georeferencingtoolbar)
  2. 2. 9. In the Editor toolbar, click on the Editor dropdown arrow andselect Start Editing.10. Make the Open_Pine_Veg editable. From the Editor toolbar, selectStart Editing;change the Target: to the Open_Pine_Veg layer; and make sure Task: isset toCreate New Feature.11. From the Editor toolbar, select the Sketch tool12. Move the cursor (now shaped like crosshairs) to the boundary linesmarked on toposheet.13. Left-click to add vertices at every place where the boundary linetraces are found. Notice there are lines attached to the cursor after thesecond vertex is digitized that would allow you to complete the polygonat any time. Figure below shows BLUE Vertices created at each click,following the boundary.
  3. 3. 14. To finish digitizing the polygon, just double-click with the left mousebutton to close it (i.e., the second-to-last point or when you get close towhere you placed the first vertex). Your new polygon should looksomething like this:
  4. 4. 15. Save Editing by clicking Save Edits from Editor drop down.16. The new layer has an Attribute Table. Appropriate data needs to beentered in respective fields.17. Open attribute table by selecting Attribute icon from editor toolbar.
  5. 5. Attribute Table Icon Data to be entered here Attribute Table window18. Enter required information in the fields by typing.19. Click Save Editing and then Stop Editing from Editor Toolbar.
  6. 6. DIGITIZING OTHER FEATURES (POINT TYPE)1. Click the Add Data button to add Vector Shapefile created usingArcCatalog named Village located in X:Exercise2Digitizatopn folder, toyour map.2. If the spatial reference warning message dialog appears Click OK.3. If not already visible, then open the Editor toolbar (click on in theStandard toolbar to open the Editor toolbar).4.Alternatively, Editor Toolbar can also be opened by right clickon standard toolbar and selecting Editor.5. In the Editor toolbar, click on the Editor dropdown arrow andselect Start Editing.6. All of the features of the Editor toolbar are now available. Usethe Target: dropdown list to select Village as the target layer.(Edits are saved in the layer indicated in the Target Box.)7. In the Editor toolbar, use the Task: dropdown list to select Create NewFeature.
  7. 7. 8.Use the dropdown list to select (click on) the Sketch Tool9. Zoom in and pan to the location from where you want tostart digitizing the Village as a point.10. Move the cursor (now shaped like crosshairs) over the center of oneof the identified village. Click once with the cursor.11. Repeat for several other Village Feature.12. Notice: Since the Feature Class for the Shapefile has been set to point,only point features are created.13. Save Editing by clicking Save Edits from Editor drop down.14. The new layer has an Attribute Table. Appropriate data needs to beentered in respective fields.15. Open attribute table by selecting Attribute icon from editor toolbar.
  8. 8. Attribute Table Icon Data to be entered here Attribute Table window16. Enter required information in the fields by typing.17. In the Editor Toolbar, click on the Editor dropdown list, select StopEditing, andselect Yes in the confirmation dialog to save edits.18. The point symbol and size can be changed by clicking on the Point inthe Table of Contents. Change the settings in the Symbol Selector dialogto something larger that easily shows up on the image.19. Repeat same steps for other point type features in the exercise viz.Carcass. Live Elephants, Range Office, Forest Guest House, Waterholes,CheckGates etc…
  9. 9. DIGITIZING OTHER FEATURES (LINE TYPE)1. Click the Add Data button to add Vector Shapefile created usingArcCatalog named River_Alakananda located in X:Exercise2Digitizatopnfolder, to your map.2. If the spatial reference warning message dialog appears Click OK.3. If not already visible, then open the Editor toolbar (click on in theStandard toolbar to open the Editor toolbar).4.Alternatively, Editor Toolbar can also be opened by right clickon standard toolbar and selecting Editor.5. In the Editor toolbar, click on the Editor dropdown arrow andselect Start Editing.6. All of the features of the Editor toolbar are now available. Usethe Target: dropdown list to select Village as the target layer.(Edits are saved in the layer indicated in the Target Box.)7. In the Editor toolbar, use the Task: dropdown list to select Create NewFeature.
  10. 10. 8.Use the dropdown list to select (click on) the Sketch Tool9. Zoom in and pan to the location from where you want tostart digitizing the Village as a point.10. Move the cursor (now shaped like crosshairs) over the center of oneof the identified village. Click once with the cursor.11. Repeat for several other Features.12. Notice: Since the Feature Class for the Shapefile has been set to point,only point features are created.13. Save Editing by clicking Save Edits from Editor drop down.14. The new layer has an Attribute Table. Appropriate data needs to beentered in respective fields.15. Open attribute table by selecting Attribute icon from editor toolbar.
  11. 11. Attribute Table Icon Data to be entered here Attribute Table Edit window16. Enter required information in the fields by typing.17. In the Editor Toolbar, click on the Editor dropdown list, select StopEditing, and select Yes in the confirmation dialog to save edits.18. The point symbol and size can be changed by clicking on the Point inthe Table of Contents. Change the settings in the Symbol Selector dialogto something larger that easily shows up on the image.19. Repeat same steps for other point type features in the exercise viz.Carcass. Roads,railway lines

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