GIS Data Structures: How do we represent the world in a GIS...
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1 1. : How do we represent the world in a GIS Basic data structures for GIS Page - 1
2 3. Vector data structure: points, lines, and polygons 4. Vector data Page - 2
3 5. Raster data structure (grid) 6. Raster and vector data Page - 3
4 7. Raster grid 8. Raster grid Page - 4
5 9. Grids 10. Elevation grid for area north of Kirkuk, Iraq Page - 5
6 11. Sources of raster data 12. Sources of raster data Page - 6
7 13. Sources of raster data 14. About image files Page - 7
8 15. About image files 16. Digital Elevation Model Page - 8
9 17. Digital Elevation Model 18. Digital Elevation Model Page - 9
10 19. Digital Elevation Model 20. Examples of raster analysis neighbor (adjacent) cell... Page - 10
11 21. Map Calculation 22. Vector and raster Page - 11
12 23. Triangulated Irregular Network (TIN) 24. Vector Elevation Data Page - 12
13 25. Example of a TIN 26. Resulting TIN Page - 13
14 27. Examole of 30m DEM 28. Why use a TIN data structure? Page - 14
15 29. Disadvantages of TINs 30. Types of data representaiton Page - 15
16 31. Attribute table 32. Attribute field general types Page - 16
17 33. How would you represent: 34. Or this: Page - 17
18 35. How would you represent an this: 36. Topology Page - 18
19 37. Network Topology 38. Planar topology Page - 19
20 39. Topological relationships 40. For your project Page - 20
21 41. Should a data layer be topologically structured? 42. ArcGIS major data formats Page - 21
22 43. Arc/Info Coverages 44. Geodatabases Page - 22
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